DOMETIC AC and Ventilation Marine Cabin Control Instruction Manual

DOMETIC AC and Ventilation Marine Cabin Control

Specifications

• Product: AC and Ventilation Marine Cabin Control
• Model: CapTouch
• Manufacturer: Dometic

Product Usage Instructions

Safety Instructions

WARNING! Electrical shock, fire, and/or explosion hazard. Failure to obey warnings could result in death or serious injury.

• Use only Dometic replacement parts and components approved for use.
• Avoid improper installation, adjustment, alteration, service, or maintenance.
• Service and maintenance must be done by a qualified service person only.
• Do not modify the product as it can be extremely hazardous.
• Install the product in a controlled, indoor environment.

Important Notes
Find the installation and operating manual online at qr.dometic.com/besFpV .

Explanation of Symbols

• Signal words identify safety messages and property damage messages.
• WARNING! Indicates a hazardous situation that could result in death or serious injury.

Intended Use

• The product is only suitable for the intended purpose and= application specified in the instructions.
• Proper installation and operation are necessary to avoid unsatisfactory performance and possible failure.

Operation

• This section describes the cycle, programming, and functions for the CapTouch controls.
• NOTICE! Indicates a situation that can result in property damage.
• NOTE: Supplementary information for operating the product.

Supplemental Directives
Observe directives before installing and operating the appliance to reduce the risk of accidents and injuries.

FAQ

• Q: How can I change the parameter P-13 to CL on the CapTouch control?
  

  • A: If the unit is cool-only, change parameter P-13 to CL, then select AUTOMATIC mode. Do not set the unit to AUTOMATIC mode before changing parameter P-13 to CL. Refer to Selecting a Parameter.

• Q: What happens when using an optional auxiliary electric heater with the CapTouch control?
  

  • A: When used with an optional auxiliary electric heater, the fan remains ON for four minutes after the heater cycles OFF, even if the fan is set to cycled operation.

Cabin Control
Short Installation and Operating Manual

Copyright
© 2024 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 con-tained herein may be protected by design, patent or pending patent. The trademarks mentioned in this manual belong to Dometic Sweden AB. All rights are reserved.

List of Figures

Important notes
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 under-stand 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 documents.dometic.com .

Related documents
Find the installation and operating manual online on qr.dometic.com/besFpV .

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

WARNING!
Indicates a hazardous situation that, if not avoided, could result in death or serious injury.

NOTICE!
Indicates a situation that, if not avoided, can result in property damage.

NOTE  Supplementary information for operating the product.

Supplemental directives
To reduce the risk of accidents and injuries, please observe the following directives be-fore proceeding to install and operate this appliance

• Read and follow all safety information and instructions.
• Read and understand these instructions before installing 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; ABYC E-11AC and DC Electrical Systems on Boats
• ANSI/NFPA1192, Recreational Vehicles Code

Canada

• CSA C22.1, Parts l and ll, Canadian Electrical Code
• ABYC E-11 RV Series, Recreational Vehicles

Safety instructions **

**

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 appliance.
• Avoid improper installation, adjustment, alteration, service, or maintenance of the appliance. Service and maintenance must be done by a qualified service person only.
• Do not change this product in any way. Modification can be extremely hazardous.
• This product should be installed in a controlled, indoor environment.

Intended use

• The CapTouch control is a user-friendly capacitance touchscreen display for basic thermostat operation. The micro controller-based unit is designed for use with direct expansion (DX), reverse-cycle air-conditioning systems, and chilled-water systems (CW). The display panel has 34 programmable parameters, automatic and manual fan speeds, standard and optional sensor inputs, and fits both Vimar® Idea and Eikon switch bezels.
• 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/or operation of the product. Poor installation and/or improper operation or maintenance will re-sult in unsatisfactory performance and a possible failure.

The manufacturer accepts no liability for any injury or damage to the product resulting from

• Incorrect installation, 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.

Operation

This section describes the cycle, programming, and functions for the CapTouch controls.

NOTICE! Cool-only units do not heat unless equipped with auxiliary heating. Failure to obey this notice will cause the unit to cool in both modes.

• If the unit is cool-only, change parameter P-13 to CL, then select AU-TOMATIC mode.
• Do not set the unit to AUTOMATIC mode before changing parameter P-13 to CL.
• Refer to “Selecting a Parameter”.

NOTE When used with an optional auxiliary electric heater, the fan remains ON for four minutes after the heater cycles OFF, even if the fan is set to cycled operation.
NOTE The images in this section show the CapTouch control display, unless otherwise indicated.

Understanding the heating and cooling cycles
The heating and cooling cycles operate differently depending on the system installed. This section describes the possible cycles.

Normal heating or cooling cycle

AUTOMATIC mode
Heating and cooling are supplied as required to meet the cabin temperature set point.

1. The system starts a cooling cycle once the cabin temperature exceeds the temper-ature set point by 2 °F (1 °C) and starts a heating cycle once the cabin temperature falls below the temperature set point by 2 °F (1 °C). The system continues the cycle until the cabin temperature equals the set point.
2. During a cycle, the cabin temperature must drop below the set point by at least 4 °F (2 °C) before the system switches from cooling to heating or exceed the set point by at least 4 °F (2 °C) before the system switches from heating to cooling. This behavior prevents small temperature overshoots from causing the system to switch between heating and cooling when it is not necessary.

Cool mode

It supplies cooling only and HEAT mode supplies heating only.

1. The cabin temperature for either mode is maintained within 2 °F (1 °C) of the set point by default.
2. When the heating or cooling set point is satisfied, the compressor cycles OFF and the fan returns to low speed.

Manual Fan Mode
The fan speed remains constant.

Chilled-Water system operation (CW systems only)
In CW systems, the water valve does not open unless the water temperature is adequate to heat or cool the cabin. The adequate heating or cooling water temperature is defined by the water temperature differential setting in the control parameters. Refer to “Selecting a Parameter”.

• Tap and hold Fan and Up simultaneously for three seconds, to view the current water temperature.
• Refer to “Using the Control Display Panel”. The fan remains on low speed until the adequate water temperature is available.

NOTE To give heat when the required water temperature is not avail-able, install the optional auxiliary electric heater, and program parameter P-28. Refer to “Programming the Control”.

Reversing-valve operation (DX systems only)
COOL mode or HEAT mode is determined by the position of the reversing valve. The reversing valve is programmed to automatically toggle in these situations

• When the system is running and an opposite cycle is needed to maintain the temperature, the reversing valve will toggle to the opposite position to start the opposite cycle and reduce the starting surge of the compressor.
• When a cooling or heating cycle is initiated after the system has been OFF for less than five minutes.
• When a cycle is interrupted by changing the display mode to OFF or changing the set point from the display panel.
• To reduce reversing-valve noise, unnecessary valve toggling is limited by default. Program the minimum compressor staging delay (parameter P-3) to five minutes or greater, to end valve toggling. Refer to “Programming the Control”.

NOTE When the system is powered up, a power-on-reset always initiates a valve toggle.

De-icing cycle (DX systems only)

• DX systems have a de-icing cycle option to prevent ice buildup on the evaporator coil during extended periods of cooling operation. Installation variables, such as grille sizes, length of ducting, insulation, and ambient temperatures, decide the runtime required to achieve the set point.
• Factors that substantially increase the runtime include operating the system with hatches and doors open and programming an unrealistic set point e.g. 65 °F (18.33 °C). Such situations can cause the evaporator to form ice on warm humid days.
• De-icing is accomplished by closely monitoring the room air temperature in 10 min intervals during a cooling cycle. Depending on the parameter value and the change in room temperature during these monitoring intervals, the control performs various actions to prevent ice from forming or to melt ice that has already formed. This is accomplished by short compressor shutdown periods combined with a one-speed increase in the fan speed, and by periodic HEAT mode cycles with the fan turned off.
• The de-icing cycle algorithm initiates periodic compressor shutdowns every 10 min if the inside temperature is at or below 69 °F (20.56 °C). The lower the temperature, the longer the compressor shutdown will last. In addition, the de-icing cycle algorithm will perform brief reverse cycle runs (with the fan purposely turned off) if the cooling cycle runs for 40 min without any cooling progress or if the cooling cycle runs for more than 60 min, regardless of cooling progress.
• The parameter setting for the de-icing feature depends on whether you are using the optional inside air temperature sensor or the display built-in temperature sensor. Installation of an optional inside air temperature sensor (located in the return air path) greatly increases the effectiveness of the de-icing feature, and this option should be considered whenever the display sensor cannot read the room temperature accurately.
• For more details on parameter settings and navigation options, refer to “Selecting a Para meter” and see full manual for “Navigation Tree”.

Choosing the control operation
The four Mode indicators represent the different modes of the control: COOL, DEHUMIDIFICATION, HEAT, and AUX HEAT. Refer to “Using the Control Display Panel” for more detail on mode operation. Fig.  on page 3

1. Tap the Mode icon to select a mode.
   Refer to“ Available Modes and Options for Operation”.
   Display icons illuminate to indicate the selected mode.
   The display locks into the last mode selected after five seconds of inactivity, then dis-plays the room temperature. The selected mode LED remains lit.
   After 10 seconds of inactivity, the display shows the room temperature and enters the IDLE state.
   OFF displays on the screen to indicate the OFF state.
   When the display is making a call for heating, cooling, aux heat, or humidity, the appropriate Mode indicator blinks for two seconds ON and two seconds OFF.

2. Tap any icon to wake up the control from the OFF or IDLE state.

3. Tap and hold the Mode icon for three seconds to start a SLEEP state.
   The display goes dark.
   Normal operation continues.

4. Tap and hold the Mode icon for three more seconds to wake up the control.

Available modes and options for operation

Using the control display panel
The following table details the icon combinations to use to activate different functions on the control.

Programming the control
NOTE If your AC has a Shaded-Pole (SP) fan motor instead of a Split- Capacitor (SC) High-Velocity (HV) fan motor, program SP into the fan motor type parameter before operating the unit. Refer to “Programming the Control”. SP units are recognizable by an overhanging blower motor. The SC motor of an HV unit is inside the blower, and the unit has VTD or HV as part of the model number. Only reprogram the fan motor type parameter if you do not have an HV blower.

Parameter settings are used to program and fine-tune the system for the most efficient operation within an installation and to adjust operating parameters for your particular needs. After new values are entered and memorized, the factory defaults are overwritten and the new parameters become the default values.

Should the CapTouch lose power, the operating parameters are retained. When power is restored, the control resumes operating as last programmed.

The control has factory default values stored in permanent memory (memorized factory default settings) that can be recalled if you have any programming difficulties. You can restore the original factory default parameters manually. Refer to “Selecting a Parameter” for a summary of the parameters, the permitted values, and original factory default set-tings.

Entering programming mode
This section gives step by step instructions for entering programming mode.

1. While the control is in the OFF mode, simultaneously tap and hold the Mode and Up (+) icons on the display screen for one second to enter the programming menu. P-1 appears on the display. Fig.2 on page 3

2. Use the Up (+) and Down (-) icons to navigate to different parameters (P-1, P-2, P-3, etc.).

3. Tap the Mode icon to enter the parameter adjustment menu.
   The display will alternate between the parameter number and the current setting.

4. Tap the Up (+) and Down (-) icons to adjust the parameter settings.

5. Tap the Mode icon to lock in the parameter change and return to the programming menu.

Selecting a parameter
The following table describes the parameters available for the CapTouch controls.

Parameter| Name| DX| CW| Factory De- fault| Parameter Range
---|---|---|---|---|---
P-1| High Fan Limit| x| x| 95| 65–95
Select a higher number to increase the fan speed, a lower number to decrease the fan speed.
P-2| Low Fan Limit| x| x| 50| 30–75
Select a higher number to increase the fan speed, a lower number to decrease the fan speed.
P-3| Compressor Staging Time Delay| x| | 15| 5 s … 35 s
Use for installations where more than one system operates from the same power source. Different staging delays allow compressors to start at different times when the power is interrupted.

Stage the units at least five seconds apart.

P-4| Inside Air Temperature Sensor Cali- bration| x| x| Ambient Temperature| Ambient Temperature ±10

°F (6 °C)

Calibrates the sensor to display the correct room temperature reading. The setting increments are in °F even when the control is set to display °C.
P-5| Failsafe Level| x| | 3| 0 = Minimal Protection

1 = Continuous No Display

2 = Continuous With Dis- play

3 = Four Failures, Reset Re- quired

Refer to “Fail Safe Levels”.

NOTE Parameter Range 1 and 2 applies to display firmware #40 and older.

P-6| Low Voltage Monitor| x| x| OFF| OFF, 95 V /195 V
Set the built-in voltmeter circuit that monitors the AC input volt- age prior to each cooling or heating cycle when set to 95 V or 195 V .

• For 100 V … 120 V input power, set to OFF or 95.
• For 208 V … 240 V input power, set to OFF or 195.

P-7| De-icing Cycle| x| | OFF| OFF

1 = ON with 5 °F (3 °C) Dis- play Sensor Differential

2 = ON with 7 °F (4 °C) Dis- play Sensor Differential

Select the parameter setting for the de-icing feature depending on whether you are using the optional inside air temperature sensor or the display built-in temperature sensor.

• If using an optional inside air temperature sensor, set this parameter to 1 to turn the de-icing feature ON, or to OFF to disable.
• If using the display built-in temperature sensor, choose one of the two selectable behavior modes:
  1.  Assumes the display sensor may be reading the room temperature as much as 5 °F (3 °C) greater than the actual evaporator temperature (standard).
  2. For more extreme installations – assumes the display sensor may be reading the room temperature as much as 7 °F (4 °C) greater than the actual evaporator temperature.
• The setting of 2 should only be used if a setting of 1 does not prevent evaporator ice from forming.

Parameter| Name| DX| CW| Factory De- fault| Parameter Range
---|---|---|---|---|---
P-8| Optional Pump Sentry| x| | OFF| OFF

ON = Select 100.0 °F … 150.0 °F (37.77 °C …

65.55 °C)

Set this parameter setting when the optional pump sentry water sensor is installed to check the condenser coil temperature and to shut down the pump and compressor when the coil temperature rises above the programmed value. This sensor is plugged into the H2O OUT sensor jack on the control board.

Program a temperature between 100.0 °F … 150.0 °F

(37.77 °C … 65.55 °C) , depending on seawater temperature and the system type. Refer to the sensor installation instructions. The setting increments are in °F even when the control is set to display °C.

P-9| Display Brightness Control| x| x| 3| 1 (Dimmest)–3 (Brightest)
Set this parameter setting between 1 and 3. A dark cabin re- quires a setting of 1. A very bright cabin requires a setting of 3.
P-10| Fahrenheit or Celsius Selection| x| x| F| F = Fahrenheit Displayed C = Celsius Displayed

A = Automatic Selection Based on Voltage

50 Hz = Celsius

60 Hz = Fahrenheit

Select °C for Celsius (Celsius readings are displayed in tenths, for example 22.2 °). The default setting is °F.
P-11| Cycle Pump with Compressor| x| | CYC| CYC = Cycle with Com- pressor

Con = Continuous Pump

Select cycled or continuous pump operation.

• CYC: increases the pump life and conserves electricity by cycling ON and OFF with the compressor.
• Con: programs the pump to operate continuously whenever the system is on.

P-12| Reverse Automatic Fan Speeds During Heating| x| x| nOr| nOr = Normal Fan Operation

rEF = Reversed Fan in HEAT Mode

Reverse the automatic fan speeds during HEAT mode to improve heat output in cooler climates.

•   When set to rEF, the fan speeds up as the set point is approached. The fan switches to low speed when the set point is satisfied and the water valve or compressor cycles OFF.

•   When set to nOr, the fan operates the same as during cooling, which represents normal fan operation.

P-13| Cool-Only Mode| x| | HP| HP = Heat Pump CL = Cool-Only
Parameter| Name| DX| CW| Factory De- fault| Parameter Range
---|---|---|---|---|---
| | Select heat pump or cool-only operation.

• Selecting “HP” operates the unit in the default heat pump mode, which allows for cooling, reverse cycle heating, or (optional) auxiliary electric heat.
• Selecting “CL” operates the unit in COOL or (optional) AUX HEAT modes.
• AUX HEAT mode is only available if the unit is equipped with an auxiliary electric heater.

NOTE Selecting “CL” initiates a five-minute com- pressor delay when the compressor shuts down on the set point, a fault, or a power outage. The five- minute delay begins immediately after the compressor shuts down. The COOL mode icon on the dis- play flashes once per second for five minutes or for the remaining time to complete the five minutes after the last cycle end time. If the five-minute delay period has passed before the compressor is called to operate, the compressor comes on with no de- lay.

P-14| Fan Motor Selection| x| x| SC| SC = Split Capacitor Fan Motor

SP = Shaded Pole Fan Mo- tor

Set to SC for AC switch high-velocity blowers. Set to SP if your unit has a Shaded Pole fan motor. Refer to “Programming the Control”.
P-15| Restore Factory Default Set- tings| x| x| nOr| rST = Reset Defaults nOr = Normal
To reset all programming parameters, set this parameter to rST. This restores all programmable parameters to the factory default values.
P-16| Hydronic Water Valve Forced Open| | x| nOr| OPn = Valve Forced Open nOr = Normal Operation
Open the water valve to bleed air from the system.

• OPn: forces the valve open for four hours while the control is turned OFF. If the control is turned ON or if AC power is interrupted during this four‑hour period, the valve over- ride is canceled.
• nOr: returns the valve to normal operation.

P-17| Water Temperature Differential| | x| 15 °F (8 °C)| 5 °F to 25 °F (3° C to 14 °C)
Set the temperature differential between the ambient air temper- ature and the hydronic water temperature that controls the water valve. For example, selecting 10 °F (– 12.22 °C) opens the valve when the water temperature is 10 °F (– 12.22 °C) less than the ambient temperature in the cooling mode and 10 °F (– 12.22 °C) greater than the ambient temperature in the heating mode.

Careful selection of the temperature differential can fully use the ship’s heating and cooling resources. For example, while in cooling mode and using a 10 °F (– 12.22 °C) value, the valve will open to allow some cooling while the hydronic system is coming down to temperature.

Parameter| Name| DX| CW| Factory De- fault| Parameter Range
---|---|---|---|---|---
P-18| Air Filter Cleaning/ Re- placement Timer Setting| x| x| 0| Displays the elapsed time (in hours x10) since the timer was started or reset.
Establish a reminder to clean or replace the air filter. Ar/FL flashes briefly on the LED display every 10 seconds until it is cleared.

• The parameter entered represents that number times 10 hours. Select the number of operating hours until the filter reminder appears.
• Parameter choices are between 10 (100 hours) and 250 (2500 hours).
• Tap the Down icon to reset the value to 0, restart the timer, and clear the reminder.

NOTE Dometic recommends checking the air filter at least every 500 hours of operation.

P-19| Filter Cleaning/ Replacement Timer Value & Reset| x| x| 0| Displays the elapsed time (in hours x10) since the timer was started or reset.
Display the current elapsed time (in hours x 10) since the timer was started or reset. When this parameter value reaches the value set in parameter P-18, Ar/FL flashes on the display every 10 seconds until cleared. Tap the Down icon to reset the value to 0, restart the timer, and clear the reminder.
P-20| CAN Bus Unit ID| x| x| dIS (Unit ID

= 59 (after enabling and power cy- cling)

| 0–255
Enables all units with a CAN Bus adapter installed to be net- worked together and communicate with each other or the ship’s CAN Bus system (with more translator equipment in some cases).

• To enable the functionality, set the parameter to 0.
• Allow the display to revert to OFF mode.
• Power cycle the system.
• Once the system powers on, the CAN Bus Unit ID will be set to 59.
• Enter the unit’s CAN Bus Unit ID number.

P-21| CAN Bus Group ID| x| x| 58 (after enabling and power cy- cling)| 0–255
Enables all units with a CAN Bus adapter installed to be grouped together in a network system and communicate with the ship’s CAN Bus system (with more translator equipment in some cases).

• When parameter P-20 is disabled, the Group ID displays 1.
• Once the CAN Bus Unit ID is set to 0 and the power is cycled, the CAN Bus Group ID defaults to 58.
• Complete the steps in parameter P-20, then enter the unit’s CAN Bus Group ID number.

P-22| Voltage Cali- bration| x| x| AC Voltage| Adjust to match the exact voltage reading.
Displays a live reading of the voltage being read by the circuit board. Calibrating this parameter provides a more exact voltage level when calculating low voltage for parameter P-6. Use a reliable voltmeter during adjustment.
P-23| Set Point Temperature Differential| x| x| 2| 1 = 1 °F (0.6 °C) Differential

2 = 1 °F (1 °C) Differential

Parameter| Name| DX| CW| Factory De- fault| Parameter Range
---|---|---|---|---|---
| | Set the temperature differential in Fahrenheit for all modes of operation: AUTOMATIC, COOL, HEAT, or AUX HEAT. Refer to “Choosing the Control Operation”.

• 1: maintains the room temperature ±1 °F (0.6 °C) from the desired set point.
• 2: maintains the room temperature ±2 °F (1 °C) from the desired set point.

P-24| DEHUMIDIFI- CATION

Mode Mini- mum Temper- ature

| x| x| 50 °F (10 °C)| 40.0 °F … 75.0 °F

(4.44 °C … 23.88 °C)

Set the minimum room temperature (in Fahrenheit) for which DEHUMIDIFICATION mode initiates a cooling cycle to remove moisture from the air. If the room temperature is below this para- meter setting, DEHUMIDIFICATION mode runs a heating cycle. Refer to “Choosing the Control Operation”.
P-25| Auto Fan Speed Temperature Differential| x| x| 2 °F (1 °C)| 1 °F to 3 °F (0.6 °C to 2 °C)
Set the incremental differential (with cumulative steps) between the ambient temperature and the set point temperature at which the fan speed will increment to the next speed.

NOTE A 1 °F (0.6 °C) hysteresis in the auto fan speed differential prevents the speed from changing if the room temperature changes. In addition, programming parameters P-12 and P-23 both have an effect on the operation of the auto fan speed.

P-26| Supply Air High Temper- ature Limit| x| x| OFF| OFF

35 °C (95 °F) … 60 °C

(140 °F) in 5 ° increments

(35 °C (95 °F) … 60 °C

(140 °F) in 2.8 ° increments)

Set the maximum supply air-discharge temperature allowed.

• Enabling this parameter has no effect unless parameter P-28 is enabled and set to EnA.
• Use of this parameter requires that the OAT sensor be placed in the supply air stream immediately downstream of the blower discharge.
• HEAT mode shuts down if the temperature of this sensor exceeds the setting. HEAT mode is restored when a 10 °F (6 °C ) hysteresis is satisfied or when power is cycled to the control and the OAT sensor temperature is less than the set- ting but still within the hysteresis. SAH is displayed when this fault occurs.
• Display the discharge temperature by tapping the Up and Down icons simultaneously (same as viewing the outside air temperature).

P-27| Idle State De- lay| x| x| 10 seconds| 5 s … 120 s (5 s increments)
Set the delay time before the display enters an idle state. Refer to “Choosing the Control Operation”. Use the Up or Down icons to increase or decrease the idle delay time.
P-28| Auxiliary Heat Enable| x| x| dIS| dIS/EnA
Enable the operation of an optional auxiliary electric heater. If an auxiliary electric heater is installed, change this setting to EnA to allow the auxiliary electric heater to be operated independently of the reverse-cycle heating. In DX applications, the auxiliary electric heat and compressor outputs on the control board operate at the same time only when the dehumidification functionality is active. Refer to “Relative Humidity Enable” in this table.
Parameter| Name| DX| CW| Factory De- fault| Parameter Range
---|---|---|---|---|---
P-29| Relative Humidity Enable| x| x| OFF| OFF / 50–80
Enable the optional room temperature/relative humidity combi- nation sensor. This allows the system to dehumidify using auxiliary electric heat (if an auxiliary electric heater is installed and en- abled) when the cabin humidity rises above the selected relative humidity (RH).

• For DX applications: Relative humidity enabled. If the optional room temperature/relative humidity combination sensor is connected to the control board and senses that the humidity has increased, the compressor run time will extend by operating to 1 °F (– 17.22 °C) lower than the set point to remove the humidity. If an auxiliary electric heater is installed, it will cycle ON and OFF to maintain the set point while the compressor stays on longer to dehumidify.
  NOTE There could be a period of overlap when the compressor and the auxiliary electric heater are on at the same time. This cycle continues until the cabin’s relative humidity is less than the humidity set point. The range of adjustment for the relative humidity is 50 % … 80 % RH.

• For CW applications: Relative humidity enabled. If the room temperature/relative humidity combination sensor is connected to the control board, this feature allows the system to dehumidify with electric heat (if an auxiliary electric heater is installed and enabled) when the cabin humidity rises above the humidity set point. The auxiliary electric heater will cycle ON and OFF to maintain the set point while the bypass valve opens to allow cold loop water to enter the air handler coil to dehumidify. This operation continues until the cabin’s relative humidity is less than the humidity set point. If an auxiliary electric heater is not installed, the on time of the bypass valve will extend by operating to 1 °F (– 17.22 °C) lower than the set point. This cycle continues until the cabin’s relative humidity is less than the humidity set point. The range of adjustment for the relative humidity is 50 % … 80 % RH.

P-30| Seawater Low-Limit Adjustment| x| | 40 °F

(4.44 °C)

| 35.0 °F … 50 °F

(1.66 °C … 10 °C)

If the optional seawater low-limit adjustment sensor is connected to the control board H2O Out 2-pin plug, set the system to switch from reverse-cycle heat to auxiliary electric heat (if an auxiliary electric heater is installed and enabled).

• Adjustment occurs when the seawater temperature drops below 40 °F (4.44 °C) and the reverse-cycle heat has been in operation for more than five minutes. Once the seawater rises 3 °F (– 16.11 °C) above the seawater low-limit adjustment sensor temperature set point, the system returns to reverse-cycle heating.
• If an auxiliary electric heater is not installed, the system will shut down and flash LO then SE when the seawater drops below 40 °F (4.44 °C) (default). Once the seawater rises 3 °F (– 16.11 °C) above the seawater lowlimit adjustment sensor temperature set point, the system automatically goes back into reverse-cycle heating and stops flashing LO then SE.

P-31| Humidity Sensor Calibration| x| x| Ambient Relative Humidity| Ambient Relative Humidity

± 10 %

Calibrate the room temperature/relative humidity combination sensor to display the correct room humidity reading.

NOTE This setting is applicable to software revision # 42 and newer only.

Parameter| Name| DX| CW| Factory De- fault| Parameter Range
---|---|---|---|---|---
P-32| Water Inlet Temperature Sensor Cali- bration| x| x| CW = Sup-

plied Chilled Water Temperature

DX = Condenser Coil or Seawater Temperature

| CW = Supplied Chilled Water Temperature ±10 °F (6 °C)

DX = Condenser Coil or Seawater Temperature ±10

°F (6 °C)

Calibrate the Water Out (DX) or Water In (CW) temperature sensor to display the correct water temperature reading. The setting increments are in °F even when the control is set to display °C.

NOTE This setting is applicable to software revision # 42 and newer only.

P-33| OAT Sensor Calibration| x| x| Outside Ambient Temperature| Outside Ambient Temperature ±10 °F (6 °C)
Calibrate the outside ambient air temperature sensor to display the correct outside air temperature reading. The setting increments are in °F even when the control is set to display °C. NOTE This setting is applicable to software revision # 42 and newer only.

Exiting programming mode
This section gives information on how to exit programming mode.

To exit the programming menu manually, simultaneously tap and hold the Up (+) and Mode icons for three seconds until the room temperature is displayed.
Alternatively, the display automatically exits the programming menu after 10 seconds of inactivity.

The control’s software version (such as “40”) appears in the display for one second- prior to the manual or automatic exit from the programming mode. The control en-ters OFF mode after exit.

Identifying programming fault codes Fig. 3 on page 3
To protect the unit, certain fault conditions trigger a lockout that shuts down the control. The control will not restart until the fault is repaired. The type of lockout associated with the fault depends on the type of fault detected (refer to the Fault and Status Codes table below) in combination with the level of protection (refer to the Fail Safe Levels table be-low) that was programmed in the P-5 parameter (refer to” Selecting a Parameter”).

Fault and status codes

has a

three minute shutdown delay (for display firmware #41 and newer).

| x|
PLF| Low Pump Flow Fault: indicates high-water temperature in the condensing coil or low pump flow.| x|
IL/ – –| Indicates a loop water sensor failure.| | x
IS/ – –| Inside Sensor: indicates the display built-in temperature sensor is damaged.| x| x
Ar/FL| Indicates the air filter replacement timer has expired.| x| x
Code| Description| DX| CW
---|---|---|---
SAH| Indicates a high supply air temperature limit.| x| x
SLP| Indicates Sleep or Lock mode. Buttons do not function in these modes.| x| x
LO/SE| Indicates a seawater low limit.| x| x
LO/AC| Low Voltage Fault: indicates low voltage. This fault offers extra protection for the compressor and components within the system during low‑voltage (brownout) conditions:

• After the compressor starts, the low voltage monitor checks the AC input voltage. If voltage drops below the specified setting (95 V /195 V ) and remains below for three minutes, the system shuts down and the low AC voltage fault displays.
• The fault continues until the AC input voltage rises above 95 V /195 V . Then, the LO/AC fault code clears automatically and the cooling or heating cycle commences.

| x| x

Fail safe levels

will automatically switch back to Level 3 after five minutes (only in display firmware # 41 and newer). Provides minimal failsafe protection and is not recommended.

• Only the IS/ – – fault is detected and displayed.
• The control shuts down and will not restart until the fault is repaired.
• Once repaired, the control restarts after a two- minute delay.

| x
1| Fail Safe Level 1 (only for display firmware # 40 and older): includes the failsafe actions of the earlier level and detects all other faults, but they are not displayed.

• The system shuts down for two minutes or until the fault is cleared, whichever is longer.
• The system restarts when the fault is cleared.

2| Fail Safe Level 2 (only in display firmware # 40 and older): includes the failsafe actions of the earlier levels and dis- plays all other faults.

• The system shuts down for two minutes or until the fault is cleared, whichever is longer.
• The system restarts when the fault is cleared.

3| Fail Safe Level 3: includes the failsafe actions of previous levels and the system will lockout after four consecutive HPF, LPF or PLF faults. In addition, the lockout can be cleared.

• The system shuts down for two minutes or until the fault is cleared, whichever is longer.
• To clear the lockout, enter OFF mode. Then, return to ON mode.

Disposal
****Place the packaging material in the appropriate recycling waste bins, wherever possible. Consult a local recycling center or specialist dealer for details about how to dispose of the product in accordance with the applicable disposal regulations.

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