7 Series Lite 48 V Roof Air Conditioner

Product Information

Specifications

• Product Name: Dometic FreshJet 7 Series Lite 48 V
• Model: Climate Control FJX
• Voltage: 48 V

Product Usage Instructions

Important Notes

Please read the instructions carefully and follow all guidelines
and warnings to ensure proper installation, use, and maintenance of
the product. Keep these instructions with the product at all
times.

Explanation of Symbols

Symbols are used to indicate safety messages and levels of
hazard seriousness:

• DANGER! – Indicates a hazardous situation that
  could result in death or serious injury.

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

• CAUTION! – Indicates a hazardous situation
  that could result in minor or moderate injury if not avoided.

Safety Instructions

Follow all safety instructions provided in the manual to ensure
safe operation of the air conditioner.

Intended Use

Understand the intended use of the product to ensure proper
application and performance.

Technical Description

Learn about the technical features and capabilities of the air
conditioner for efficient operation.

Before Initial Use

Prior to using the air conditioner, make sure to follow any
specific instructions for initial setup and preparation.

Operation

Refer to the manual for detailed instructions on how to operate
the air conditioner effectively.

Cleaning the Roof Air Conditioner

Regularly clean the roof air conditioner as per the provided
guidelines to maintain its performance.

Maintenance

Follow the maintenance schedule outlined in the manual to keep
the air conditioner in good working condition.

FAQ

Q: How often should I clean the roof air conditioner?

A: It is recommended to clean the roof air conditioner at least
once every three months or more frequently if operating in dusty
environments.

Q: What should I do if I encounter issues with the air

conditioner?

A: Refer to the troubleshooting section in the manual for steps
to diagnose and resolve common problems. If issues persist, contact
customer support for assistance.

CLIMATE CONTROL FJX

Dometic FreshJet 7 Series Lite 48 V

EN

Roof Air Conditioner Operating manual……………………………………………..3

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 contained 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.

Dometic FreshJet 7 Series Lite 48 V EN

English

1

Important notes……………………………………………………………………………………………………………… 3

2

Explanation of symbols…………………………………………………………………………………………………….. 3

3

Safety instructions…………………………………………………………………………………………………………… 4

4

Intended use…………………………………………………………………………………………………………………. 5

5

Explanations of symbols on the appliance……………………………………………………………………………… 5

6

Technical limits and conditions…………………………………………………………………………………………….5

7

Technical description………………………………………………………………………………………………………..5

8

Before initial use……………………………………………………………………………………………………………. 10

9

Operation…………………………………………………………………………………………………………………… 10

10 Cleaning the roof air conditioner……………………………………………………………………………………….. 17

11 Maintenance…………………………………………………………………………………………………………………18

12 Troubleshooting…………………………………………………………………………………………………………… 20

13 Disposal…………………………………………………………………………………………………………………….. 22

14 Warranty…………………………………………………………………………………………………………………….. 23

15 Technical data……………………………………………………………………………………………………………… 23

1 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 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 documents.dometic.com.
2 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.

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

NOTE Supplementary information for operating the product.

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EN Dometic FreshJet 7 Series Lite 48 V
3 Safety instructions
WARNING! Failure to obey these warnings could result in death or serious injury. Electrical appliances are not toys. The appliance is not to be used by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they are under supervision or have been given instruction. Children should be supervised to ensure that they do not play with the appliance. Cleaning shall not be performed by children without supervision. Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance with an industry recognized assessment specification. Maintenance shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other qualified personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants. Repair of the appliance may only be carried out by qualified personnel who are familiar with the risks involved and the relevant regulations. Inadequate repairs may cause serious hazards. For repair service, contact the service center in your country (see dometic.com/dealer). Always disconnect the power supply when working on the appliance. The appliance shall be stored in a room without continuously operating ignition sources such as open flames, an operating gas appliance or an operating electric heater. Do not pierce or burn the appliance. Be aware that refrigerants may not contain an odor. Do not use the appliance near flammable fluids or in closed rooms. Ensure that no combustible objects are stored or installed near the air outlet. A distance of at least 50 cm must be kept. Keep the ventilation openings clear of obstruction. Do not damage the refrigerant circuit. Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used. The roof air conditioner shall be installed in a vehicle with a floor area larger than 4 m².
CAUTION! Failure to obey these cautions could result in minor or moderate injury. Do not reach into air outlets or insert any foreign objects in the appliance. Do not undo the upper cover of the appliance in the event of a fire. Use approved extinguishing agents. Do not use water to extinguish fires. In the case that the appliance contains an ionizer, consult your physician if you have a medical condition. The ionizer can produce ozone (O3) in small quantities. If you suffer from lung disease, asthma, heart disease, respiratory disease, respiratory problems, or have an ozone sensitivity, consult your physician to determine whether the use of this device is safe for you.
NOTICE! Damage hazard Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. The appliance shall be stored so as to prevent mechanical damage from occurring. Do not make any alterations or conversions to the appliance. Never drive through automatic car washes when the appliance is mounted. If faults occur in the refrigerant circuit, the appliance must be checked and repaired by the manufacturer, its service agent or similarly qualified personnel in order to avoid a hazard.
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Dometic FreshJet 7 Series Lite 48 V EN
4 Intended use
The roof air conditioner is only designed for installation on the roof of a caravan or recreational vehicle to provide cooling and heating. The roof air conditioner is not suitable for trains, houses, and apartments. The roof air conditioner is not suitable for installation in construction machines, agricultural machines, or similar equipment. 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 result 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.
5 Explanations of symbols on the appliance
Warning! Low burning velocity material.
Read operating manual.
Read service manual.
6 Technical limits and conditions
The roof air conditioner is intended for vehicles with the following roof thicknesses: · 25 mm … 60 mm for a roof cutout of 400 mm × 400 mm · 32 mm … 60 mm for a roof cutout of 360 mm × 360 mm The roof top air conditioner will operate at ambient temperatures between ­2°C … 52°C. The roof air conditioner is designed to be installed within ± 10 ° of the horizontal plane.
7 Technical description
The roof air conditioner supplies the vehicle’s interior with cool or warm air which is without dust and dirt and can be dehumidified. The roof air conditioner can lower the temperature within the vehicle to a certain level that depends on the type of vehicle, the ambient temperature and the cooling capacity of the roof air conditioner. Below an outer temperature of 16°C the roof air conditioner does not cool anymore.
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EN Dometic FreshJet 7 Series Lite 48 V
The roof air conditioner is operated with the following operating elements: · Control panel · Remote control (only some models, see List of models on page 6)

1
7.1 List of models
The following table shows which function applies to a specific model: Feature is available Feature is upgradable
Automatic Cooling Heating Ventilation Dehumification Air purifier ADB light External light Timer Sleep Inverter
7.2 Control panel

FJX7333IHP

Symbol

Description Switches the roof air conditioner on or to standby mode.

6

Symbol
AU TO

Dometic FreshJet 7 Series Lite 48 V EN
Description Increases the currently displayed value. Reduces the currently displayed value. Pairs with bluetooth/WLAN when both buttons are pressed simultaneously. Switches the ambient lights in the roof top unit on or off. Switches the ambient lights in the air distribution box on or off. Activates the sleep function (only for models with sleep function). Displays the set temperature and indicates fan level when fan is adjusted. Indicates the AirPurifier mode is active. Indicates the temperature is displayed in degrees Celsius. Indicates the timer is set. Enables/disables the automatic mode (only for models with automatic mode). Enables/disables the cooling mode (only for models with cooling mode). Enables/disables the heating mode (only for models with heating mode). Adjusts the fan speed between Low, Med, High, Turbo or Auto (shown as 1, 2, 3, 4 or AA on the air distribution box display for a short time when changed). Enables/disables ventilation mode (only for models with ventilation mode). Circulates air without heating or cooling. Enables/disables dehumidification mode (only for models with dehumidification mode).

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EN Dometic FreshJet 7 Series Lite 48 V 7.3 Remote control

Control and display elements Fig. on page 8:

Button

Description

—

Display

Displays the following:

· Time · Selected room temperature (target value) in °C · Actual room temperature · Air conditioning mode · Fan speed · Symbols for active additional functions · Battery status
Switches the roof air conditioner on or to stand-by mode.

Increases the currently displayed value.

Reduces the currently displayed value.

Selects the fan speed (Selecting the fan speed manually on page 11).

8

Button

Dometic FreshJet 7 Series Lite 48 V EN
Description
Selects the air conditioning mode (only for models with automatic mode). The corresponding symbol is displayed. Activates the sleep function (only for models with sleep mode). The symbol is displayed.
Confirms and saves settings.
Sets the timer and the clock.
Switches the ambient lights in the air distribution box on or off.
Press once to display the current interior temperature. The symbol is displayed. Press twice to display the set temperature. Activates the I feel function. The symbol is displayed. Every 10 min the I feel function adjusts the target temperature to the actual temperature measured by the remote control. Switches the ambient lights in the roof top unit on or off.
Displays that the remote control’s batteries are empty. Replace the batteries (Replacing the remote control bat teries on page 14). Displays that the remote control is transmitting values to the roof air conditioner.

7.4 Air conditioning modes

Air conditioning mode Displayed symbol

Description

Automatic

You specify the temperature, and the roof air conditioner brings the interior to this temperature by heating or cooling and by controlling the necessary fan speed.

Cooling

You specify the temperature and fan settings, and the roof air conditioner cools the interior to this temperature.

Heating

You specify the temperature and fan settings, and the roof air conditioner heats the interior to this temperature. The fan will only start after 2 min (on Low speed) and then after around 5 min will go to the set fan speed (after the evaporator reaches temperature).

Ventilation

You specify the fan settings, and the roof air conditioner circulates air without heating or cooling.

Dehumidifying

The roof air conditioner removes moisture from the air without heating or cooling the interior thus decreasing the relative air humidity.

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EN Dometic FreshJet 7 Series Lite 48 V

Air conditioning mode Displayed symbol
Air purifier

Description
The roof air conditioner ionizes the air, thus collecting dust and particles including to viruses and bacteria out of the air.

7.5 Additional functions

Additional function
Timer

Display message

Sleep I Feel

Description
The roof air conditioner is switched on at the specified time.
The roof air conditioner is switched off at the specified time.
The roof air conditioner is switched on and off at the specified times.
The sleep function reduces the fan speed and the compressor speed to reduce the noise levels for comfortable sleeping. The remote control measures the room temperature and transmits this measurement to the roof air conditioner every 10 min. The roof air conditioner adapts the target value to this measurement.

8 Before initial use
Inspection before starting up
Before switching on the roof air conditioner, observe the following: 1. Check whether the supply voltage corresponds to the values specified in Technical data on page 23. 2. Ensure that both the air intake openings and the air nozzles are free. All ventilation grilles must always be kept free
to ensure that the roof air conditioner is able to operate at maximum capacity. Prepare the remote control 3. Insert the batteries (Replacing the remote control batteries on page 14). Set the time 4. Set the current time (Setting the current time on page 12).
9 Operation

9.1 Hints for improved use
The following hints will optimize the performance of your roof air conditioner: · Improve the heat insulation of your vehicle by sealing gaps and hanging reflective blinds or curtains on your
windows. · Select an appropriate temperature and fan speed. · Align the air nozzles sensibly. · Ensure that the air nozzles and air intake openings are not covered by cloths, paper, or other objects. · If the vehicle has been subjected to direct sunlight for a long time: Operate the roof air conditioner in the
Ventilation ( ) mode with the windows open for a while before switching on the Cooling ( ) mode.
· If the vehicle has been subjected to direct sunlight for a long time: Operate the roof air conditioner in the Ventilation ( ) mode with the windows open for a while before switching on the Cooling ( ) mode.

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Dometic FreshJet 7 Series Lite 48 V EN · Avoid opening doors and windows for as long as possible in the Cooling ( ) mode.

9.2 Basic notes on operation
The FreshJet 7 Series Lite 48V roof air conditioner has two operating modes:

Operating mode Standby

Description
The roof air conditioner is ready for operation and can be switched on with the remote control. The ambient lights are available. The remote control is also in standby, but you can switch the remote control on independently from the roof air conditioner.

On

The roof air conditioner is conditioning the air in the interior.

9.3 Using the remote control
Consider the following hints when using the remote control: · Point the remote control at the IR receiver of the control panel. · The corresponding settings and values are directly transmitted to the roof air conditioner when you press a button. · The roof air conditioner confirms the receipt of data with a beep sound. · Values increase or decrease faster when you press and hold the + or ­ button. · In the standby mode, the remote control display is inactive too. You can switch the remote control on to standby
independently from the roof air conditioner.
To switch only the remote control to or from standby, press the button while not pointing to the control panel’s IR receiver.
9.4 Switching the roof air conditioner on and to standby

NOTE When the roof air conditioner is switched on, it operates with the values that were set before switching to standby. The roof air conditioner can be switched off only by cutting the power supply.

Press the button on the remote control or the button on the control panel to switch the roof air conditioner on or to standby.

9.5 Selecting the air conditioning mode
Select the desired air conditioning mode using the MODE button (Air conditioning modes on page 9). The roof air conditioner confirms the receipt of the values with a beep sound. The roof air conditioner is switched to the selected air conditioning mode.

9.6 Selecting the fan speed manually
In all modes, except for the Automatic ( ) and Dehumidifying ( ) modes, the fan speed can be selected manually.

Display message

Description

Low fan level

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EN Dometic FreshJet 7 Series Lite 48 V

Display message

Description

Medium fan level

High fan level.

Turbo fan level.

Automatic mode (the fan speed is adjusted based on the ambient temperature).

Press the button of the remote control or the button of the control panel to select the desired fan speed. The roof air conditioner confirms the receipt of the values with a beep sound.
The new fan speed is set.
9.7 Setting the temperature
In the Automatic ( ), Cooling ( ), Heating ( ), and Dehumidifying ( ) modes, you can specify a temperature between 16°C and 31°C.
Use the + or ­ button on the remote control to set the desired temperature. The roof air conditioner confirms the receipt of the values with a high note. The temperature is set on the roof air conditioner.
9.8 Setting the current time
The remote control needs the current time in order to program the timer. The time is shown on the remote control display. 1. Press and hold the button in order to get into the mode for setting the time.
The time flashes on the remote control display. 2. Use the + or ­ button to set the current time. Press and hold the + or ­ button longer than 2 s to increase or
decrease the time quicker. 3. Press the SET button to confirm the time.
9.9 Setting the timer
The timer function allows you to set a specific time period for air conditioning. You can specify the switch-on time, the switch-to-standby time, or both values.
The timer function is set via remote control.
NOTE The remote control returns to its initial mode if no button is pressed on the remote control for 15 s while programming the timer.

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Dometic FreshJet 7 Series Lite 48 V EN

Set the switch-on timer as follows:

a) Select the desired air conditioning mode and all required values (for example the temperature). b) If necessary, switch the roof air conditioner to standby.

The switch-on timer can only be set when the roof air conditioner is in standby.

c) Press the button one time.

The

symbol flashes on the remote control display.

d) Use the + or ­ button to set the time when the roof air conditioner shall be switched on. e) Press the button.

The switch-on timer is set. The roof air conditioner will be switched on with the selected air conditioning mode at the specified time.
Set the switch-to-standby timer as follows:

a) If necessary, switch the roof air conditioner on.

The switch-to-standby timer can only be set when the roof air conditioner is switched on.

b) Press the button twice.

The

symbol flashes on the remote control display.

c) Use the + or ­ button to set the time when the roof air conditioner shall be switched to standby. d) Press the button.

The switch-to-standby timer is set. The roof air conditioner will be switched to standby at the specified time. Set the switch-on timer and the switch-to- standby timer as follows:

a) Select the desired air conditioning mode and all required values (for example the temperature).

b) Press the button three times.

The

symbol is shown on the remote control display. The ON symbol flashes.

c) Use the + or ­ button to set the time when the roof air conditioner shall be switched on.

d) Press the button.

The OFF symbol flashes.

e) Use the + or ­ button to set the time when the roof air conditioner shall be switched to standby.

f) Press the button.

The switch-on and switch-to-standby times are set. The roof air conditioner will be switched on for the specified time period.

To cancel preset timer, press the button once.

The

symbols disappear. Preset values are discarded.

9.10 Setting the sleep function

The sleep function is only available in Cooling ( ) or Heating ( ) modes.

The sleep function limits the fan speed to a lower level to reduce the noise levels for easier sleeping.

Only for inverter models: The sleep function additionally limits the compressor speed.

To activate the sleep function proceed as follows:
a) Set the required temperature (Setting the temperature on page 12). b) Press the button on the remote control or the button on the control panel.
The symbol appears in the remote control display. The sleep function is activated. To deactivate the sleep function, press the or the button on the remote control or the control panel. The symbol disappears in the remote control display. The sleep function is deactivated.

button on the

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EN Dometic FreshJet 7 Series Lite 48 V
9.11 Activating the I feel function
When this function is active, the remote control measures the room temperature and transmits this measurement to the roof air conditioner every 10 minutes. The roof air conditioner adapts the target value to this measurement. The I feel function is only active when the temperature range is between +18 °C and +29 °C.
The remote control should not be kept in a part of the room that is considerably warmer or colder than the average room temperature. It may not, for example, be le in the sun or in front of the roof air conditioner.
When the temperature rises above +29 °C or falls below +18 °C, the I feel function is deactivated. The symbol flashes three times in the display and then turns off.
1. Press the button. The I feel function is activated.
The symbol appears in the display. 2. Position the remote control so that it points at the IR receiver on the control panel. Otherwise, the values cannot
be transmitted to the roof air conditioner.
9.12 Operating the ambient lights

WARNING! Risk of injury By law it is forbidden to use the external lights when driving the vehicle.

The button on the remote control is active even if the remote control is switched off.

Only for models with ADB light:

To switch the internal lights on or off press the button on the remote control or on the control panel. The symbol flashes once in the display of the remote control when the internal lights are switched on.

To dim the internal lights proceed as follows:

a) Press the button on the remote control or on the control panel for 3 s.

b) When pressing the button on the remote control: Press the 50% and 100%.

button to dim the internal light between

c) When pressing the button on the control panel: The internal light’s brightness cycles between 50% and 100%. Release the button when the the desired brightness is reached.

Only for inverter models:

To switch the external lights on or off press the button on the control panel.

9.13 Replacing the remote control batteries

NOTE The remote control display may still be bright even if the batteries are running low. Replace the batteries when the remote control indicates low batteries.

14

Replace the batteries as shown.

Dometic FreshJet 7 Series Lite 48 V EN

1. 3.
2.

2 × 1,5 V, AAA 4.

CLICK
6.
5.

The display shows all symbols for 5 s.
Protect the environment! Do not dispose of any batteries with general household waste. Return defective or used batteries to your retailer or dispose of them at collection points.
9.14 Regulating air supply within the vehicle
The air flow can be adjusted along the ceiling or towards the floor.

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EN Dometic FreshJet 7 Series Lite 48 V Turn the slats in the air nozzles independently in the required directions. A
B
9.15 Using the Dometic Climate App
The Dometic Climate App can be used to control the air conditioner via the mobile phone or to update the soware of the air conditioner (not applicable for FJX4233M).
NOTE Depending on the screen in the Dometic Climate App, a < button is displayed that allows to switch to the previously displayed screen. Pairing the air conditioner and the Dometic Climate App NOTE Once the air conditioner is paired with the Dometic Climate App, the pairing is always activated automatically as soon as the air conditioner, the Bluetooth of the mobile phone and the Dometic Climate App are switched on again aer being switched off. 1. Download the Dometic Climate App.
Scan the QR code or follow the link: qr.dometic.com/bdkpkV 2. Ensure the air conditioner is switched on (Switching the roof air conditioner on and to standby on page 11). 3. Activate Bluetooth on the mobile phone.
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Dometic FreshJet 7 Series Lite 48 V EN
4. Open the Dometic Climate App. Settings for permissions appears.
5. Allow or deny the permissions by tapping the corresponding answers. The welcome screen appears.
6. Click the Add new device button. 7. Select the air conditioner. 8. Press and hold the and buttons simultaneously on the control panel for 3 s.
“BL” flashes on the display for 60 s.
The Dometic Climate App displays a pairing screen. When the pairing is completed the air conditioner is displayed. 9. Tap the Next button. A confirmation appears that the air conditioner has been selected and connected. 10. Tap the OK button. 11. If available, enter the login data and tap the Login button. 12. If necessary, tap the Sign up button to create an account. 13. Fill in the fields. 14. Tap the Sign up button to sign up or tap the Already have an account? button to return to the Log in screen.
Updating the air conditioner software 1. Ensure that the air conditioner and the Dometic Climate App are paired. 2. Ensure to be logged in to the Dometic Climate App. 3. Tap the button in the Dometic Climate App.
A selection of settings appears. 4. Tap Devices to display the paired devices. 5. Select the air conditioner.
Information about the air conditioner is displayed. 6. Tap Check Updates to check for soware updates for the air conditioner.
The Dometic Climate App show the current update, if applicable. 7. If availabe, tap Download.
The update download has been finished when Update is displayed. 8. Tap Update.
The update status is displayed in percent. When the update is completed in the Dometic Climate App, the Dometic Climate App automatically connects the mobile phone to the ventilations system via Wi-Fi and transmits the update to the air conditioner. The Dometic Climate App indicates when the soware has been updated and disconnects the Wi-Fi connection.
10 Cleaning the roof air conditioner
NOTICE! Damage hazard Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. Do not clean the roof air conditioner with a high-pressure cleaner. Exposure to water can damage the roof air conditioner.
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EN Dometic FreshJet 7 Series Lite 48 V Do not use sharp or hard objects or cleaning agents for cleaning as these may damage the roof air conditioner. Do not use petrol, diesel, or solvents.
1. Regularly remove leaves and other dirt from the air intake and the ventilation grilles of the roof air conditioner. Do not damage the ventilation grilles in the process.

2. Occasionally clean the housings of the roof top unit and the air distribution box with a damp cloth. Use only water with a gentle cleaning agent.
3. Only for models with remote control: Occasionally clean the remote control with a slightly damp cloth. Clean the display with a cleaning cloth for glasses.
4. Only for models with air distribution box: Occasionally clean the air distribution box display with a mild solution of warm soapy water. The display screen is acrylic and can be damaged by some common household chemicals such as chemical cleaners, window cleaners, alcohol, certain tensides, organic solvents, and soeners.
11 Maintenance
WARNING! Risk of injury Any other maintenance work in addition to the described subjects here may only be carried out by qualified personnel who are familiar with the risks involved when handling refrigerant and air conditioning systems as well as the relevant regulations.
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Interval Regulary

Dometic FreshJet 7 Series Lite 48 V EN
Inspection/maintenance Check whether the condensation water drainage channels (1) at the sides of the roof air conditioner are clear and the condensation water is able to escape.

Regulary Once per year

· Clean the filter of the air discharge unit.

1

2

2
1
1. Insert a flat screwdriver or knife into the handle (1) to pull the filters (2) slightly out. 2. Remove the filters by hand. 3. Clean the filters with a detergent solution and let them dry. 4. Slide the dry filters back in.Fig. on page 19 · Have the heat exchanger of the roof air conditioner serviced by specialist company. · Check the seals between the roof air conditioner and the vehicle roof for cracks and other damage. · Check whether the fastening bolts are tightened to the correct torque (2.5 Nm ± 0.3 Nm) and adjust if necessary.

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EN Dometic FreshJet 7 Series Lite 48 V
12 Troubleshooting

Problem Not cooling well
Only for models with heating mode: Not heating well
Low Air output Water enters the vehicle. The roof air conditioner does not switch on.

Possible cause The roof air conditioner is not set to cooling. The ambient temperature is above 52°C.
The temperature set is higher than the room temperature. The ambient temperature is below 16°C.
One of the temperature sensors is defective. The evaporator fan is damaged.
The condenser fan is damaged.
The roof air conditioner is not set to heating. The ambient temperature is below ­2°C. The temperature set is lower than the room temperature. One of the temperature sensors is defective. The evaporator fan is damaged.
The air intake openings are blocked or obstructed.
The fan is defective.
The condensation water drainage openings are clogged up. The seals are damaged.
No power supply connected. The voltage is too low (< 45 V).
The voltage converter is defective.

Suggested remedy
Set the roof air conditioner to cooling.
The roof air conditioner is only designed for ambient temperatures of up to 52°C.
Select a lower temperature.
The roof air conditioner is designed for cooling only at ambient temperatures above 16°C.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Set the roof air conditioner to heating.
The roof air conditioner is designed for ambient temperatures above ­2°C.
Select a higher temperature.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Remove any leaves and other dirt from the ventilation grilles of the roof air conditioner.
Contact an authorized service agent or Dometic.
Clean the water drainage openings from condensation water.
Contact an authorized service agent or Dometic.
Check the power supply.
The power supply of the battery is not sufficient.
Contact an authorized service agent or Dometic.

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Dometic FreshJet 7 Series Lite 48 V EN

Problem
The roof air conditioner does not switch off.
Only for fixed-speed and inverter models: The roof air conditioner constantly switches itself off. The display shows: P0 The display shows: P1 The display shows: P2 The display shows: P3 The display shows: P4 The display shows: P5 The display shows: P6 The display shows: P7 The display shows: P8 The display shows: P9 The display shows: E0 The display shows: E1

Possible cause One of the temperature sensors is defective. The electrical fuse of the power supply is too low.
One of the temperature sensors is defective. The electrical fuse of the power supply is too low. The icing sensor has tripped.
Over temperature or over current on IPM module Under voltage protection
Unit DC over-current protection
Overvoltage protection
Discharge tube overheat protection
Evaporator coil protection (cooling mode) Condenser coil protection (cooling mode) Evaporator coil protection (heating mode) Ambient outdoor temperature too high (heating mode) or too low (cooling mode) protection Compressor drive abnormal or compressor does not start Communication failure
Room temperature sensor fault

Suggested remedy
Contact an authorized service agent or Dometic.
The battery voltage is overloaded. Check the battery. If applicable, unwind the power cable drum. Reduce the active electrical consumers in the vehicle. The electrical protection of the battery is not sufficient. Check the electrical protection of the vehicle.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
The outer temperature is too low or all air nozzles are closed.
Contact an authorized service agent or Dometic.
Check with the campsite management if the voltage at the campsite is sufficient.
Contact an authorized service agent or Dometic.
Check with the campsite management if the voltage at the campsite is sufficient.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.

21

EN Dometic FreshJet 7 Series Lite 48 V

Problem The display shows: E2 The display shows: E3 The display shows: E6 The display shows: E7 The display shows: E8 The display shows: E9
The display shows: EA The display shows: EC The display shows: EE The display shows: EF The display shows: EL The display shows: EU

Possible cause Evaporator coil temperature sensor fault Condenser coil temperature sensor fault Internal motor failure
Outdoor temperature sensor failure
Discharge tube temperature sensor failure Compressor drive or IPM module fault
Current sensor fault
CAN commumication failure(self inspection) Outdoor EEPROM fault
External motor failure
LIN-BUS/CI-BUS communication failure Voltage sensor failure

Suggested remedy
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Check with the campsite management if the voltage at the campsite is sufficient. Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.
Contact an authorized service agent or Dometic.

13 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.

Protect the environment! Do not dispose of any batteries with general household waste. Return defective or used batteries to your retailer or dispose of them at collection points.

Disposal refrigerant: Provide the refrigerant in the correct recovery cylinder back to the refrigerant supplier with a waste transfer bill. Do not mix refrigerants in the refrigeration systems and the cylinders.
If compressors or compressor oils are to be disposed of, ensure that the compressors have been evacuated to an acceptable level to ensure that no flammable refrigerant remains in the lubricant. To speed up the evacuation process, the compressor housing must only be heated electrically. When draining oil from a system, ensure that it does not ignite or come into contact with the ground.

22

Dometic FreshJet 7 Series Lite 48 V EN
14 Warranty
If the product does not work as it should, please contact your retailer or the manufacturer’s branch in your country (see dometic.com/dealer). The warranty applicable to your product is 3 year(s).
For repair and warranty processing, please include the following documents when you send in the device:
· A copy of the receipt with purchasing date · A reason for the claim or description of the fault
Note that self-repair or nonprofessional repair can have safety consequences and might void the warranty.
Australia only
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
This warranty policy is subject to the conditions and guarantees which are mandatory as implied by the Consumer Guarantees Act 1993(NZ).
15 Technical data

FreshJet FJX7333IHP

752

272

480

702

351

351

20 225 25 ­ 60
48

285 294 579

259 259 518

Contains fluorinated greenhouse gases. Hermetically sealed equipment.

Cooling capacity based on ISO 5151: Heating capacity based on ISO 5151: Rated DC input voltage: DC voltage range: Rated cooling current: Rated heating current: Required fuse: Operating temperature range: Refrigerant:

FreshJet FJX7333IHP 2523 W 2218 W 48 V 45 … 51 V < 28.6 A < 20.3 A
50 A (DC use) ­2°C … 52°C
R32

23

EN Dometic FreshJet 7 Series Lite 48 V
Refrigerant quantity: CO2 equivalent: Global warming potential (GWP): Protection class (roof top unit): Noise level (highest fan setting) Dimensions L x W x H: Weight (roof top unit with air distribution box)

FreshJet FJX7333IHP 420 g 0.284 t
675 IPX4 < 60 dB(A) Fig. on page 23 < 35 kg

24

4445104418 4450035353 54-906-MAM01U 2024-08-06 REV00

References

• Find a Dealer | Dometic USA

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