DOMETIC FJX3000 Series Climate Control Freshjet Instruction Manual

DOMETIC FJX3000 Series Climate Control Freshjet

Copyright
© 2023 Dometic Group. The visual appearance of the contents of this manual is protected by copyright and design law. The underlying technical design and the products contained herein may be protected by design, patent or be patent pending. The trademarks mentioned in this manual belong to Dometic Sweden AB. All rights are reserved.

Service Center & Dealer Locations
Visit: www.dometic.com
Please read these instructions carefully and follow all instructions, guidelines, and warnings included in this product manual in order to ensure that you install, use, and maintain the product properly at all times. These instructions MUST stay with this product.
By using the product, you hereby confirm that you have read all instructions, guidelines, and warnings carefully and that you understand and agree to abide by the terms and conditions as set forth herein. You agree to use this product only for the intended purpose and application and in accordance with the instructions, guidelines, and warnings as set forth in this product manual as well as in accordance with all applicable laws and regulations. A failure to read and follow the instructions and warnings set forth herein may result in an injury to yourself and others, damage to your product, or damage to other property in the vicinity. This product manual, including the instructions, guidelines, and warnings, and related documentation, may be subject to changes and updates. For up-to-date product information, please visit www.dometic.com.

Related documents

Find the installation manual on-line in French at http://qr.dometic.com/beJZzw

Find the installation manual on-line in Spanish at http://qr.dometic.com/beJa1y

Explanation of symbols and

safety instructions
This manual has safety information and instructions to help you eliminate or reduce the risk of accidents and injuries.

Recognize safety information
This is the safety alert symbol. It is used to alert you to potential physical injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

Understand signal words
A signal word will identify safety messages and property damage messages, and also will indicate the degree or level of hazard seriousness.

DANGER!
Indicates a hazardous situation that, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation that, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.

NOTICE: Used to address practices not related to physical injury.
I Indicates additional information that is not related to physical injury.

Supplemental directives
To reduce the risk of accidents and injuries, please observe the following directives before proceeding to install, operate, or service this product:

• Read and follow all safety information and instructions.
• Read and understand these instructions before installing, operating, or servicing this product.
• The installation must comply with all applicable local or national codes, including the latest edition of the following standards:

U.S.A.

• ANSI/NFPA70, National Electrical Code (NEC)
• ANSI/NFPA 1192, Recreational Vehicles Code
• ANSI Z21.57, Recreational Vehicles Code

Canada

• CSA C22.1, Parts l & ll, Canadian Electrical Code
• CSA Z240 RV Series, Recreational Vehicles

General safety messages

WARNING: ELECTRICAL SHOCK, FIRE, AND/OR EXPLOSION HAZARD. Failure to obey the following warnings could result in death or serious injury:

• Use only Dometic replacement parts and components that are specifically approved for use with the product.

• Avoid improper installation, adjustment, alterations, service, or maintenance of the product. Installation, service, and maintenance must be done by a qualified service person only.

• Do not modify this product in any way. Modification can be extremely hazardous.

• Use care when diagnosing and/or adjusting components on a powered product.

• This product is not intended for use by persons
  (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the product by a person responsible for their safety.

• Children should be supervised to ensure that they do not play with the product.

The FreshJetX4 series is equipped with a LED light on the shroud. The light cannot be used while the recreational vehicle is in motion.

Intended use
The FreshJet Rooftop Air Conditioner (Air Distribution Box, Electronic Controls), (also referred to as the
“product” or “unit”), is designed and intended for installation on the roof of a Recreational Vehicle (hereinafter referred to as the “RV”) during or after the time it is manufactured. The product is comprised of two main components: the rooftop component and the internal air distribution box (ADB) component. This product is only suitable for the intended purpose and application in accordance with these instructions.
This manual provides information that is necessary for proper installation and operation of the unit. Poor installation and/or improper operating or maintenance will result in unsatisfactory performance and a possible failure. The manufacturer accepts no liability for damage in the following cases:

• Incorrect assembly or connection, including excess voltage
• Incorrect maintenance or use of spare parts other than original spare parts provided by the manufacturer
• Alterations to the product without express permission from the manufacturer
• Use for purposes other than those described in this manual

Dometic reserves the right to change product appearance and product specifications.

General information

This section provides general information about the unit and its components.
The images used in this document are for reference purposes only. Components and component locations may vary according to specific product models. Measurements may vary ±0.38 in. (10 mm).

Tools and materials
Dometic recommends that the following tools and materials be used.

Recommended tools and materials

Framing wood| All-weather caulk
Knife/box cutter| Screwdrivers
Electrical connectors| 3/8” Torque wrench socket
Basic electrical connection tools| Torque wrench (22.2 in. lbs/2.5 N·m)
Optional parts 1

Fresh Jet air distribution box spacer kit| 9620006638

Model identification
The model identification labels are located as follows:

• The rooftop component and serial numbers are found on the identification label located on the bottom of the base pan. To view the identification label, remove the ADB cover.
• The ADB component model and serial numbers are found on the rating plate located on the ceiling template. To view the rating plate, look through the filter opening.

Have this information ready before contacting Dometic for service.

ADB components
This section identifies the main ADB components.

1 ADB components

1. Foam dividers
2. Ceiling template
3. ADB cover
4. Long bolts
5. Air filter

Rooftop component dimensions
This section provides the external dimensions and clearance measurements of the rooftop component.

2 Fresh Jet (FJX3 and FJX4 series)

1. 14.4 in. (366 mm)
2. 29.6 in. (752 mm)
3. 27.6 in. (701 mm)
4. 18.0 in. (457 mm) Clearance
5. Air flow clearance area
6. Air flow clearance area
7. Center line of unit
8. Roof opening
9. Front of unit

ADB component dimensions
This section provides the internal dimensions of the ADB component.

3 Dimension measurements

1. Front of unit
2. 2.3 in. (58 mm)
3. 23.0 in. (584 mm)
4. 20.4 in. (518 mm)
5. Roof opening
6. Center line of unit
7. 11.6 in. (295 mm)
8. 3.4 in. (86 mm)
9. 6.0 in. (152 mm)
10. 3.0 in. (76 mm)

Placement requirements
This section describes factors to consider when placing the rooftop component.

Planning the rooftop location
The rooftop component is specifically designed for installation on the roof of an RV. To determine where to place the rooftop component, consider these items..

• A 14.3 in. x 14.3 in. (363 mm x 363 mm)
  [±0.1 in. (3mm)] square opening and hereinafter referred to as “roof opening” is required. The roof opening is part of the return air system of the rooftop component and must be finished in accordance with NFPA 1192.

• The rafter/joist support frames must be spaced no greater than 16.0 in. (406 mm) on center. The rooftop component is designed to fit over an existing roof vent opening.

• The distance between the roof and the RV ceiling must be between 1.5 in. (38 mm) and 6.0 in.
  (152 mm).

• When no roof vent is available or when another location is desired, an opening must be cut through the roof and ceiling of the RV. This opening must be located between the roof reinforcing members. Consider these recommendations along with your cooling needs:

  • For a single rooftop component: mount the rooftop component slightly forward of the RV’s center (front to back) and centered from side to side.
  • For two rooftop components: measuring from the front of the RV and centering from side to side, mount the first rooftop component at 1/3 the length of the RV and the second rooftop component at 2/3 the length of the RV.

Tilt requirements
When measuring for placement, perform the following actions:

1. Make all measurements while the RV is parked on a level surface.
2. Install the rooftop component on a flat and level roof section.
3. Use the tilt allowance table to determine the maximum acceptable roof tilt.

Tilt allowance

Model number| Maximum tilt (all directions)

• Fresh Jet 3 series
• Fresh Jet 4 series

| 15°

Specifications

This section provides the electrical specifications by model.

1. The wiring size indicated is for copper wiring up to 24 ft (7.3 m) in length. For wire lengths over 24 ft (7.3 m), consult the National Electrical Code for proper sizing.
2. Circuit protection: a time delay fuse or circuit breaker is required.
3. Dometic Corporation gives general guidelines for generator requirements. These guidelines come from experiences people have had in actual applications. When sizing the generator, the total power usage of your RV must be considered. Generators may lose power at high altitudes and from lack of maintenance.
4. This model includes a heat pump.
5. The FreshJet 4 series have dual high speed fans.

Wiring diagrams

This section provides the wiring diagrams for the product.1

1. Wiring diagram definitions; 115 VAC; 60 Hz 1 PH; Use copper conductors only

– – – – – – Field wiring
———- Factory wiring
• Line splice

4 FreshJet 3 series

5 FreshJet 4 series

Pre-installation

WARNING : FIRE OR ELECTRICAL SHOCK HAZARD. Failure to obey these warnings could result in death or serious injury.

• Shut off the gas supply, disconnect the 115 VAC power from the RV, and disconnect the positive (+) 12 VDC terminal from the supply battery before drilling or cutting into the RV.
• Make sure there are no obstacles such as wires or pipes inside the RV’s roof.
• Provide grounding in compliance with all applicable electrical codes.

CAUTION: LIFTING HAZARD.
Use proper lifting technique and control when lifting the rooftop component. Two people are required to lift the rooftop component to the roof. Failure to obey this caution could result in minor or moderate injury.

NOTICE: Failure to follow these notices could result in damage to the rooftop component and/or the RV.

• Never create a low spot on the RV roof.
• Maintain the structural integrity of the RV roof. The roof must be designed to support 130 lbs (59 kg) when the RV is in motion. Normally, a 200 lb (91 kg) static load design will meet this requirement.
• Read this entire section before beginning the installation.

This section describes how to install and set up the unit.

Determining your cooling needs
When determining your cooling requirements, consider the following items:• The size of the RV

• The RV window area (which could increase heat gain)
• The amount of insulation in the walls and the roof
• The geographical location where the RV will be used
• The personal comfort level required

Preparing the RV roof opening

NOTICE: The roof opening must be structurally framed to provide adequate support and to prevent air from being drawn from the roof cavity. Framing stock with 0.75 in. (19 mm) or more thickness must be used. Remember to provide an entrance hole for power supplies at the front of the opening. See Figure 7.
This section describes how to prepare the RV roof opening.

Using an existing roof vent

opening

If the roof does not have an existing roof vent, skip to “Making a new roof opening” on page 11.
This section describes how to prepare the RV roof when using an existing vent.

1. Shut off the gas supply, disconnect the 115 VAC power from the RV, and disconnect the positive (+) 12 VDC terminal from the supply battery.
2. Unscrew and remove the roof vent.
3. Remove the caulking compound around the opening.
4. Seal the screw holes and seams where the roof gasket will be located. Use a good grade of all-weather sealant.
5. Measure the roof opening (review “Placement requirements” on page 7). If the roof opening is within specifications, skip to “Routing the supply wiring to the roof opening” on page 11.
6. If the opening needs to be resized, proceed to “Making a new roof opening” on page 11.
   • If the opening exceeds 14.4 x 14.4 in. (366 x 366 mm), it will be necessary to reduce the size of the opening.
   • If the opening is less than 14.0 x 14.0 in.
     (356 x 356 mm), it will be necessary to enlarge the opening.

Making a new roof opening

If the roof has an existing roof vent, see “Using an existing roof vent opening” on page 10.
This section describes how to prepare the RV roof when making a new roof opening.

1. Shut off the gas supply, disconnect the 115 VAC power from the RV, and disconnect the positive (+) 12 VDC terminal from the supply battery.
2. Carefully mark the required roof opening. See “Placement requirements” on page 7.6 Structure for a new roof opening
3. Incorrect
4. Correct
5. Correct
6. Make sure the new opening does not compromise the roof’s structural integrity.
   • Do not cut the roof structure or the rafters.
   • The rafters should remain supported by a cross beam.
   • The opening should be between the rafters.
7. Carefully cut the required roof opening.7 Structural framing for a new roof opening
8. 0.8 in. (20 mm) Minimum width for the framing stock
9. 0.3 in. (8 mm) Minimum width for access hole
10. 15.0 in. (381 mm) Exposed length of 115 VAC power supply wire
11. Frame the opening so it will not collapse when bolting the rooftop component down.
12. At the front of the frame opening, leave or create an access hole to allow for the length of exposed 115 VAC power supply wiring required to complete the installation.
13. Using the roof opening as a guide, cut a matching hole in the ceiling of the RV interior.

Routing the supply wiring to the roof opening
The power must be on an appropriately-sized separate time-delay fuse or circuit breaker. See “Specifications” on page 8.
This section describes how to route the wiring for the rooftop component.

Routing the VAC power supply wire

1. Route the 115 VAC power supply wire, with ground, from the time-delay fuse or circuit breaker box to the roof opening. Use a listed/certified non-metallic sheathed single-strand cable. See “Specifications” on page 8.
   If an AC or a vent fan were removed, the existing power supply wire may be used provided it is of the proper type, size, and location, and if it is correctly fused.

2. Make sure that at least 15.0 in. (381 mm) of the 115 VAC power supply wire extends into the roof opening to ensure an easy connection at the junction box.

Routing the VDC power supply wire

1. Route a dedicated 12 VDC fused supply wire, 18 to 22 AWG, from the filtered side of the RV converter or from the battery to the roof opening.
2. Make sure that at least 15.0 in. (381 mm) of the 12 VDC supply wire extends into the roof opening.

Positioning the rooftop component

NOTICE : Do not slide the rooftop component along a surface or damage to the gasket on the bottom of the rooftop component could occur and cause a leak.

1. Remove all the contents from the carton and discard the carton.
2. Place all the ADB kit contents in the RV. The ADB kit contains mounting hardware for the ADB that will be installed inside the RV.
3. Move the rooftop component to the roof.8 Placing the rooftop component
4. Front of the rooftop component
5. Roof opening
6. Lift and place the rooftop component over the prepared opening using the gasket on the rooftop component as a guide.

The outside work is complete. Minor adjustments can be made from inside the RV if required.

Preparing to work inside the RV
This section describes the interior preparation.

1. Confirm the ADB kit is inside the RV.9 Centering the rooftop component inside the RV
2. Roof gasket
3. From inside the RV, check the gasket alignment of the rooftop component over the roof opening. If necessary, adjust the rooftop component from below by gently pushing up.10 Return air opening
4. Wiring harness
5. Ceiling thickness
6. Reach up into the return air opening of the rooftop component and pull down the rooftop component’s electrical cord and wiring harness.
7. If the rooftop component has a built-in board, complete the following:
   • Mount the junction box to the framing in front of the roof opening, using the installer-supplied screws.
   • Install the strain relief.

Installation

WARNING : FIRE OR ELECTRICAL SHOCK HAZARD. Failure to obey these warnings could result in death or serious injury.

• Shut off the gas supply, disconnect the 115 VAC power from the RV, and disconnect the positive (+) 12 VDC terminal from the supply battery before drilling or cutting into the RV.
• Provide grounding in compliance with all applicable electrical codes.

This section describes how to install the product.

Wiring the rooftop component
This section describes how to connect the wires for the rooftop component.

Connecting the 115 VAC power supply to the junction box

1. Route the previously run 115 VAC power supply wire from the rooftop component through a strain relief and into the junction box.
2. Tighten the strain relief making sure not to damage the wires. Leave enough wire inside the electronic control box to connect to the rooftop component’s 115 VAC wires.
3. Connect the white neutral wires together, using appropriately-sized connectors.
4. Connect the black live wires to each other, using appropriately-sized connectors.
5. Connect the bare copper wire to the green or bare copper wire, using appropriately-sized connectors.
6. Ensure the connectors to the 115 VAC power supply wire are secured so they do not vibrate loose.
7. Push the connected wires into the junction box.

Connecting the low voltage wire to the electronic control box
NOTICE : Make sure the positive (+) 12 VDC terminal is disconnected from the supply battery. Otherwise, damage to the rooftop component could occur.

1. Connect the previously run (+) 12 VDC supply wire protruding from the roof opening to the (+) 12 VDC red wire at the electronic control box.
2. Connect the previously run (–) 12 VDC supply wire protruding from the roof opening to the (–) 12 VDC black wire at the electronic control box.

Connecting the communication cable to the electronic control box
Connect the 4-conductor communication cable supplied with the ADB to the “TO ADB” matching connector on the electronic control box.

Connecting the lighting cable to the electronic control box (optional)
If the ADB is equipped with LED lighting, connect the 2-conductor lighting cable supplied with the ADB to the “INTERNAL LIGHT” matching connector on the electronic control box.

Installing the foam dividers
Roof thicknesses vary among RVs and the ADB installation may require additional foam to fill any gaps in thicker roofs.
This section describes how to determine if additional foam dividers are required, the number required, and the installation method.11 Measuring the roof thickness for foam divider installation

1. Ceiling opening

2. Rooftop component basepan

3. Roof thickness

4. Inspect the ADB and the mounting hardware placed inside the RV in “Positioning the rooftop component” on page 12. See “ADB components” on
   page 6 for the parts configuration.

5. Measure the roof thickness, from a flat surface of the installed rooftop component’s basepan to the ceiling opening inside the RV. 12 Stacking the foam dividers and placement location

6. Stacked foam dividers\

7. Roof thickness

8. Top foam – 0.4 in. (10 mm) (1)

9. Top foam ring – 0.4 in. (10 mm) (1)

10. Foam divider – 0.4 in. (10 mm) (2)

11. Foam divider – 1.2 in. (30 mm) (3)

12. ADB adapter (1)

13. Identify the different types and sizes of foam dividers.

14. Using the tables in “Roof thickness 1.25 to 5.5 in. (32 to 140 mm)” on page 16 and in “Roof thickness 6.0 to 7.5 in. (152 to 191 mm)” on page 17, determine the number and combination of foam dividers required based on the roof thickness.

15. Stack of foam dividers

16. Full height measurement (equal to the roof thickness)

17. Place the ADB face down on a stable, protected, flat surface.

18. Stack the foam dividers required and place them onto the ADB.

19. Measure the full height, from the flat surface of the ADB to the top of the foam dividers to confirm the full height is equal to the previously determined roof thickness.

20. Adjust the number of foam dividers to reach the correct full height, as necessary.

21. Filter

22. Filter notch

23. 4-Conductor communication cable

24. 2-Conductor light cable

25. Slide out the filter to expose the filter notch.

26. Pass the 4-pin communication cable and the 2-pin lighting cable (if equipped) through the filter notch.

Roof thickness 1.25 to 5.5 in. (32 to 140 mm)

Roof thickness 6.0 to 7.5 in. (152 to 191 mm)

1. Up to 0.4 in. (10 mm) of compression of the foam dividers is acceptable and may be required in some instances.
2. To accommodate a roof thickness greater than 5.5 in. (140 mm), order the optional accessory kit. See “Tools and materials” on page 5.

Securing the ADB
NOTICE: Overtightening could damage the base pan or ceiling template. Not enough torque will cause an inadequate roof seal, and could cause a leak.

All models in this manual use a four-bolt pattern to secure the ADB kit.
This section describes how to secure the ADB to the roof.

1. For ADBs that fit within the 14.0 x 14.0 in. (366 x 366 mm) ceiling opening, press the entire ADB up toward the basepan and into the ceiling opening.
2. Use the following figures to determine the proper mounting pattern (A, B, C, D) and bolt location.
3. Ceiling template
4. Mounting bolt
5. Start each mounting bolt by hand, through the ceiling template and up into the rooftop component base pan.
6. Tighten all four mounting bolts evenly at 22.2 in. lbs (2.5 N·m).
7. Plug the 4-pin communication cable and the 2-pin lighting cable (if equipped) into the display located on the ceiling template.
8. Center cover
9. Clip
10. Clip the center cover to the ADB.
11. Turn on the power supply.
12. Verify that all the unit features work.

Read the following operating instructions before attempting to run the unit.

System check
This section describes how to reset and/or complete a final check of the system.

1. Verify the system features function properly.
2. Verify the operation of all applicable modes, including: auto, cooling, fan, and heating.
3. If a feature does not work correctly:
   • Disconnect the 120 VAC and 12 VDC power supplies.
   • Verify all the wiring is correct.

Operation

This section describes the AC’s operating controls and settings.

Locating the control panel

1. Control panel

The control panel is located on the air outlet of the AC cover.

Understanding the control panel
This section explains the electronic controls on the control panel.

Electronic controls Using the control panel
This section explains how to use the control panel.

Powering on
Press and release the On/Standby icon.

• When the power is on, the On/Standby icon (and the last selected icon) illuminates at 100% brightness (steady, no blinking) during the entire time the AC is on.
• All unselected icons illuminate at 50% brightness.

Reading the LED display
The LED display shows the current set point temperature.

• If available, the default mode is Auto mode (with the Auto Fan Speed). The default temperature setting is 70 °F (21 °C).
• If Auto mode is not available, the default mode is Cool. The default temperature setting is 72 °F (22 °C).

Adjusting the temperature
Press ( + / – ) icon to increase or decrease the temperature.

When adjusting the temperature

• The ( + / – ) icon illuminates at 100% during selection.
• Modify the temperature after selecting the function.
• Modify the mode after the function and temperature are set.

Selecting standby

Press and release the On/Standby icon. When Standby is active:

• The AC is idle.
• The On/Standby icon illuminates at 50% brightness.
• The LED display is off.
• The Interior Light and Exterior Light icons illuminate at 50% brightness.

Setting the Auto mode

For the Auto mode and the specified selections to operate effectively, the rooftop component must be a heat pump or have a furnace wired to the electronic control box. The Auto Mode icon will not illuminate without a heat pump or furnace present.

1. Press and release the Auto Mode icon.

2. To specify the temperature, press the ( + / – ) icon to set a desired temperature between 40 °F and 90 °F (4 °C and 32 °C). The default setting is 70 °F (21 °C). The ( + / – ) icon illuminates at 100% brightness during selection and then remains illuminated at 50%brightness after the button is released.
   All unselected icons illuminate at 50% brightness.

3. To turn off Auto mode, select a different mode or turn the on/standby button off.
   When the Auto mode is active, one of the following operations can occur:

   • Auto Change Over Cooling: If the room temperature rises above the setpoint by 2 °F (1 °C), cooling is initiated. The unit stays on until the room temperature drops to the setpoint, and then turns off.

   • Auto Change Over Heating: If the room temperature drops below the setpoint by 2 °F (1 °C), heating
     is cycled on and off based on the measured room temperature and the setpoint temperature. If more than one heat source is available, the priority for selecting the auxiliary heat source is: heat pump (first) then furnace (second). The heating source stays on until the room temperature reaches the setpoint, then the heating source turns off.

   • During Auto Change Over Heating, if the heat pump operation is inhibited, the LED display flashes LO to indicate an outdoor temperature of 29 °F (-2 °C) or lower. The user must select an alternate heat source within the vehicle.

   • Auto Fan Cycling: The Auto mode defaults to Auto Fan regardless of the fan speed selection.

   • With Auto Fan Cycling, the fan cycles on and off automatically, based on the temperature differential between the room temperature and the setpoint temperature.

   • The fan operates at Turbo speed when the room temperature is above the setpoint temperature by more than 8 °F ±0.5 °F (5 °C ±0.3 °C).

   • The fan operates at High speed when the room temperature is above the setpoint temperature by 5 °F to 7 °F ±0.5 °F (3 °C to 4 °C ±0.3 °C).

   • The fan operates at Low speed when the room temperature is above the setpoint temperature by less than 4 °F ±0.5 °F (2 °C ±0.3 °C).

Setting the Cool mode

1. Press and release the Cool Mode icon.

2. To specify the temperature, press the ( + / – ) icon to set a desired temperature between 55 °F and 90 °F (13 °C and 32 °C).
   The ( + / – ) icon illuminates at 100% brightness during selection and then remains illuminated at 50%brightness after the button is released.
   All unselected icons illuminate at 50% brightness.

3. Select the fan speed in Fan mode.
   Pressing the fan speed button shows the current fan speed. Pressing again will allow the fan to change to desired speed.

When the Cool mode is active

• The system cycles cooling on and off based on the measured room temperature and the setpoint temperature.
• Four fan speed selections are available: Low, High, Turbo, and Auto.
• The default setting is 72 °F (22  °C). If the room temperature rises above the setpoint temperature by 1 °F (0.5 °C), the fan turns on, then cooling starts after a 180 second activation timeout.
• If the room temperature drops below the setpoint temperature by 1 °F (0.5 °C), cooling turns off. After 15 seconds, the fan turns off in Auto Fan mode.

Freeze control protection
Freeze Control is active during Cool mode and during Dry and Turbo operation. When the measured temperature of the Freeze Control sensor is 27 °F (–3 °C) or less, the fan operates automatically in High speed regardless of the setting and the compressor turns off.
When the compressor is off, it remains off for a minimum of three minutes. When the measured temperature of the Freeze Control sensor reaches 55 °F (13 °C) or greater, the fan operates in its programmed speed and the compressor turns back on.
When the measured temperature of the Freeze Control sensor is between 27 °F and 55 °F (–3 °C and 13 °C), cooling initiates and the Cool mode operates normally.

Setting the fan speed
Press and release the Fan Speed icon to cycle through and select the fan speed.

• Manual Turbo Fan Speed: the fan operates continuously at Turbo or maximum speed. The compressor cycles on and off.
• Manual High Fan Speed: the fan operates continuously at high speed. The compressor cycles on and off.
• Manual Low Fan Speed: the fan operates continuously at Low speed. The compressor cycles on and off.
• Auto Fan Speed: the fan and compressor cycle on and off. The fan speed changes automatically based on the temperature differential between the room temperature and the setpoint temperature. The fan operates for a minimum of one minute in any speed.
  • The fan operates at Turbo speed when the room temperature is above the setpoint temperature by more than 8 °F ±0.5 °F (5 °C ±0.3 °C).
  • The fan operates at High speed when the room temperature is above the setpoint temperature by 5 °F to 7 °F ±0.5 °F (3 °C to 4 °C ±0.3 °C).
  • The fan operates at Low speed when the room temperature is above the setpoint temperature by less than 4 °F ±0.5 °F (2 °C ±0.3 °C). In this setting, there is a one minute delay to switch the fan.

Setting the Auxiliary Heat mode (if equipped)
Auxiliary heat can be a heat pump and/or a furnace (if equipped).

• If the Auxiliary Heat mode is not available, this icon will not illuminate or function. The heat pump’s functionality requires the presence of an outdoor (ambient) temperature sensor within range.
• The difference between Auto mode and Auxiliary Heat mode is that Auxiliary Heat mode only heats, and it is possible to choose a fan speed.
• If more than one heat source is available, the priority for selecting the auxiliary heat source is: heat pump (first) then furnace (second).

1. Press and release the Auxiliary Heat icon.

2. To specify the temperature, press the ( + / – ) icon to set a desired temperature between 40 °F and 90 °F (4 °C and 32 °C). The default setting is 68 °F (20 °C). The ( + / – ) icon illuminates at 100% brightness during selection and then remains illuminated at 50%brightness after release of the button.
   All unselected icons illuminate at 50% brightness.

3. Press the Fan Speed icon to set the fan speed.

When the heat pump is active

• The reversing valve output turns on and the system cycles the compressor on and off based on the measured room temperature and the setpoint temperature.
• The compressor cycles on when the room temperature sensor measures the room temperature at equal to or below the setpoint temperature minus 1 °F (0.5 °C).
• The compressor cycles off when the room temperature sensor measures the room temperature at equal to or above the setpoint temperature plus 1 °F (0.5 °C).

For example, if the setpoint is 72 °F (22  °C), the compressor cycles on when the temperature drops to (or below) 71 °F (22  °C) and cycles off when the temperature rises to (or above) 73 °F (23  °C).
In Auxiliary Heat mode, four fan speed selections are available: Low, High, Turbo, and Auto.

• With the fan speed set to Low, High, or Turbo, the fan runs continuously in the selected speed.
• With the fan speed set to Auto, the fan cycles on when the compressor is on and cycles off when the compressor is off. A 15 second fan on delay will be active.
• When the furnace is running, the fan is off in Auto mode.
• Auto : if the fan speed selected is Auto, the Fan speed changes automatically based on the temperature differential between the room temperature and the setpoint temperature.
• Turbo : the fan operates at Turbo speed when the room temperature is below the setpoint temperature by more than 8 °F ±0.5 °F (5 °C ±0.3 °C).
• High : the fan operates at High speed when the room temperature is below the setpoint temperature by 5 °F to 7 °F ±0.5 °F (3 °C to 4 °C ±0.3 °C).
• Low : the fan operates at Low speed when the room temperature is below the setpoint temperature by less than 4 °F ±0.5 °F (2 °C ±0.3 °C). The 15 second fan on delay will be active.

During heat pump operation, the defrost cycle may occur. The defrost cycle occurs when the measured temperature of the outdoor ambient sensor is between 30 °F and 42 °F (–1 °C and 6 °C).

• The LED display alternates between HP and DF every ten seconds to indicate that the defrost cycle is active. In the defrost cycle, the accumulated compressor run time of the heat pump is monitored. When the accumulated compressor run time equals 25 minutes, the fan turns off and the reversing valve de-energizes. The compressor continues to run for 4.5 minutes and then the reversing valve will be energized. After a 30 second delay to allow the indoor coils to heat up, the fan turns on.

• The defrost cycle continues until the measured temperature of the outdoor ambient sensor drops to (or below) 30 °F (–1 °C) or rises to (or above)
  42 °F (6 °C).

• The LED display alternates between HP and DF in one second intervals to indicate that the defrost cycle is active.

During heat pump operation, a low ambient heat pump lock out may occur. Since heat pumps lose efficiency at low outside ambient temperatures, the heat pump shuts down if the outside temperature falls below 30 °F (–1 °C). The reversing valve de-energizes when the heat pump is in the low ambient heat pump lock out condition. If a furnace is equipped, the system will switch over to the furnace.

The LED display alternates between HP and LO in one second intervals to indicate the outdoor temperature is 29 °F (–2 °C) or lower.

The reversing valve energizes continuously when the heat pump is active, except when it cycles off during a defrost cycle.

Selecting Turbo mode
The Turbo mode provides maximum cooling for rapid pull-down and/or spot cooling when room temperatures exceed the setpoint.

1. Press and release the Turbo Mode icon.
   All unselected icons illuminate at 50% brightness.
   The fan speed will be set to Turbo by default, regardless of fan mode selection.

2. To change the fan speed or set the temperature, you must change from Turbo mode to another mode.

3. To exit, press and release the Turbo icon or any other selection icon. Operation returns to Cool mode when exiting Turbo mode.
   In Turbo mode, the temperature set point will be
   set to the lowest setting 55 °F (13 °C) regardless of the setpoint selection. The compressor operates continuously to attempt to reach the lowest set point.

Selecting Ventilation mode
The Ventilation mode uses only the fan to maintain air circulation or a desired temperature within the vehicle.

1. Press and release the Ventilation icon.
   All unselected icons illuminate at 50% brightness, except the Ventilation Speed icon.

2. Press the Fan Speed icon at any time to increase or decrease the fan speed. The LED display shows a number to identify the fan speed: (1) Low; (2) High;
   (3) Turbo, or (AU) Auto.
   If you press another icon (Cool, Heat Pump, etc.) during the selection of the fan speed, the fan speed chosen will be the last accepted fan speed before the other icon was pressed.

In the Auto fan speed setting, the fan cycles on and off. The fan speed changes automatically based on the temperature differential between the room temperature and the setpoint temperature. The fan operates for a minimum of one minute in any speed.
In the Auto fan speed setting of Ventilation mode, the fan speeds up or slows down to help maintain the desired setpoint temperature. For Auto fan settings in other modes, the fan works in conjunction with the heating or cooling system when speeding up or slowing down to help maintain the desired setpoint temperature.
The fan operates at Turbo speed when the room temperature is above the setpoint temperature by more than 8 °F ±0.5 °F (5 °C ±0.3 °C).

• The fan operates at High speed when the room temperature is above the setpoint temperature by 5 °F to 7 °F ±0.5 °F (3 °C to 4 °C ±0.3 °C).
• The fan operates at Low speed when the room temperature is above the setpoint temperature by less than 4 °F ±0.5 °F (2 °C ±0.3 °C).

Setting the special modes
Press and release the Mode icon to cycle through to the Sleep, Dry, or Eco mode selections.

Sleep mode
The Sleep mode provides a comfortable sleeping environment, minimizing compressor cycling and reducing the LED brightness level.

1. Press and release the Mode icon until the Sleep (SL) mode displays.
   The Mode icon illuminates steadily at 100%brightness.
   The LED display shows SL for five seconds and then alternate between SL and the temperature display every five seconds.
   All unselected icons illuminate at 50% brightness. After five seconds, all the icons illuminate at 50%brightness.

2. Press the ( + / – ) icon to set the temperature.
   The ( + / – ) icon illuminates at 100% brightness during the selection, then remain at 50% brightness after the button is released.

3. To change the fan speed, select a mode other than the Sleep mode. The default fan speed is set to Low, regardless of fan speed selection.

When the Sleep mode is active

• The control system reduces the fan speed and gradually raises the set point to minimize compressor cycling and increase comfort.
• In the first hour, the setpoint automatically increases by 2 °F (1 °C). Conversely, in Heat Pump mode, the setpoint decreases by 2 °F (1 °C).
• During the second hour following the initiation of Sleep mode, the temperature automatically increases by another 2 °F (1 °C). Conversely, in Heat Pump mode, the setpoint decreases another 2 °F (1 °C).

Dry (dehumidification) mode
The Dry mode provides mild dehumidification for room temperatures above the setpoint and when additional cooling is not required.

1.  Press and release the Mode icon until the Dry (DR) mode displays.
   The Mode icon illuminates steadily at 100%brightness.
   The LED display shows DR for five seconds and then alternates between DR and the temperature display every five seconds.
   All unselected icons illuminate at 50% brightness.

2. Press the ( + / – ) icon to set the temperature. The ( +  / – ) icon illuminates at 100% brightness during the selection, then remain at 50% brightness after releasing the button.

3. To change the fan speed, select a mode other than the Dry mode. The default fan speed is set to Low (regardless of fan speed selection).

When the Dry mode is active

• The temperature is set to the desired setpoint and the compressor cycles on and off at approximate intervals of six minutes to extract moisture from the air while not lowering the room temperature. Dry mode is not a substitute for a standalone dehumidifier.
• The AC will not dehumidify if the room temperature is below 64 °F (18 °C). The minimum setpoint is 65 °F (18 °C).
• If the setpoint falls below 65 °F (18 °C), the LED display flashes DR to indicate the temperature is below the necessary threshold.

Eco mode
The Eco mode conserves energy when power consumption needs to be minimized. For example, use Eco mode to save fuel and extend your AC run time when using a portable generator.

1. Press and release the Mode icon until the Eco mode displays.
   The Mode icon illuminates steadily at 100%brightness.
   The LED display shows EC for five seconds and then alternate between EC and the temperature display every five seconds.
   All unselected icons illuminate at 50% brightness.

2. Press the ( + / – ) icon to set the temperature. The ( +  / – ) icon illuminates at 100% brightness during the selection, then remain at 50% brightness after releasing the button.

3. To change the fan speed, select a mode other than the Eco mode. The default fan speed is set to Auto (AU), regardless of fan speed selection.

When the Eco mode is active

• The temperature is maintained at 2 °F (1 °C) from the set point (above for cooling or below for heating). The fan is controlled automatically to help retain the setpoint.
• The setpoint temperature displays rather than the actual temperature.
• If the heat pump is not available, the AC only cools and the fan speed remains at Auto.

Using the interior light (if equipped)

• To turn on the ADB interior light, press and release the Interior Light icon. The Interior Light icon illuminates steadily at 100% brightness.
• To turn off the ADB interior light, press and release the Interior Light icon. The Interior Light icon illuminates steadily at 50% brightness.
• To dim the ADB interior light to one of five lighting levels, press and hold the Interior Light icon for two seconds.

The interior light is available in Standby mode. The Interior Light icon illuminates at 50% brightness to indicate it is an available option.

Using the exterior AC light (if equipped)
Leaving the exterior AC light on when the RV is in motion on a public road is against the law in some jurisdictions and may result in a traffic ticket.

• To turn on the exterior AC light, press and release the Exterior Light icon. The Exterior Light icon illuminates steadily at 100% brightness.
• To turn off the exterior light, press and release the Exterior Light icon. The Exterior Light icon illuminates steadily at 50% brightness.

Changing the temperature unit of measurement
I The default temperature measurement is Celsius  (C). Changing the temperature measurement indicator will not affect the current operation mode.

1. Wait for the LED display to show only the temperature, then press and hold both sides of the
   ( +  / – ) icon for three seconds. The current unit of measurement blinks for five seconds on the LED display.

2. Press the + or – of the ( + / – ) icon within the
   five second blinking window. The new unit of measurement blinks for five seconds in the LED display before displaying the room temperature.

3. To change the temperature, press the ( + / – ) icon. The ( + / – ) icon illuminates at 100% brightness during the selection, then remain at 50% brightness after releasing the button.

Maintenance

This section describes routine activities to maintain properly-working system components.

Cleaning the air filter

NOTICE : Never run the unit without the return air filter in place. Otherwise, dirt will accumulate and may substantially degrade the performance of the unit over time.
This section describes how to maintain a clean air filter.

1. Periodically (or a minimum of every two weeks of operation) remove the return air filter located behind the return air vent grille and wash it with soap and warm water.
2. Let the filter dry completely before placing the filter back into position.

Cleaning the ADB

NOTICE : Never use furniture polish or scouring powders to clean the outside shell of the ADB.
Clean the outside shell of the ADB with a soft cloth dampened with a mild detergent.

Servicing the blower
The blower motor in the rooftop component is factory-lubricated and requires no service.

Troubleshooting

The following table describes common occurrences that are not a result of defective workmanship or materials.

reset the circuit breaker.
A fuse has blown.| Replace the fuse.
The product does not operate (or operates poorly) and the RV is connected to the motor generator.| The RV is not receiving power from the motor generator.| Confirm the motor generator is running.
Confirm the motor generator is producing power.
Confirm the fuse or circuit breaker is open. Ensure the fuse is not blown, or the circuit breaker is on and not activated.
Contact the local service center.
The product does not operate (or operates poorly) and the RV is connected to a power supply by a land line.| The RV is not receiving power from the power supply.| Confirm the land line is plugged into the power supply.
Confirm the land line is properly sized for the product’s power load.
Contact the local service center.
Frost forms on the evaporator coil, as visible through the air inlet hole with the filter removed.| The product is producing very cold output at a very low air speed.| Inspect and clean the filter.
Open the air vents and remove any obstructions.
The outside temperature is relatively low.| Adjust the temperature to a warmer setting.
Operate the product on any Fan Only setting until the coil is free of frost.
Contact the local service center.
The product does not maintain the desired temperature.| The product is affected by the RV’s heat gain from high outdoor temperatures or humidity.| Park the RV in a shaded area.
Use window shades, blinds, or curtains.1
Keep the windows and doors closed or minimize their use.
Avoid using heat-producing appliances inside the RV.
Operate the product in the Turbo Fan / Cool mode.
Start the product before the outside temperature increases.
Condensation forms on ceilings, windows, or other surfaces.2| The air contains water vapor that is below the dew point of the surface.| Keep doors and windows closed when the unit is in operation to reduce the formation of condensation.

1. For a more permanent solution to high heat gain, accessories like the Dometic outdoor patio or window awnings reduce the effects of direct sunlight.
2. During normal operation, this product is designed to remove a certain amount of moisture from the air, depending on the size of the space being conditioned.
   The manufacturer of this unit will not be responsible for damage caused by condensation forming on ceilings, windows, or other surfaces.

Disposal

Place the packaging material in the appropriate recycling waste bins, whenever possible. Consult a local recycling center or specialist dealer for details about how to dispose of the product in accordance with all applicable national and local regulations.

LIMITED ONE-YEAR WARRANTY

LIMITED ONE-YEAR WARRANTY AVAILABLE AT DOMETIC.COM/EN-US/TERMS-AND- CONDITIONS-CONSUMER/WARRANTY.
IF YOU HAVE QUESTIONS, OR TO OBTAIN A COPY OF THE LIMITED WARRANTY FREE OF CHARGE, CONTACT:

• DOMETIC CORPORATION
• CUSTOMER SUPPORT CENTER
• 5155 VERDANT DRIVE
• ELKHART, INDIANA, USA 46516
• 1-800-544-4881 OPT 1
• dometic.com
• YOUR LOCAL DEALER
• dometic.com/dealer
• YOUR LOCAL SUPPORT
• dometic.com/contact
• YOUR LOCAL SALES OFFICE
• dometic.com/sales-offices

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