Lunar Refrigeration & Cooling
(Venus, 2019 Model Year)
Also Fitted To This Caravan
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Possible Cause | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|---|
N/A | Refrigerator does not cool sufficiently (Inadequate ventilation to the unit) | Inadequate ventilation to the unit | Confirm the ventilation grilles aren't covered over. | DIY Safe |
N/A | Refrigerator does not cool sufficiently (Thermostat setting is too low) | Thermostat setting is too low | Turn the thermostat up to a higher setting. | DIY Safe |
N/A | Refrigerator does not cool sufficiently (The condenser is heavily frosted) | The condenser is heavily frosted | Confirm the refrigerator door is closing properly. | DIY Safe |
N/A | The refrigerator isn't cooling enough because too much warm food has gone in over a short space of time. | A large amount of warm food has gone in over a short space of time. | Let warm food cool down before putting it in the fridge. | DIY Safe |
N/A | The refrigerator isn't cooling enough simply because it's only just been switched on. | The appliance has only been running for a short while. | Check whether the cooling compartment works after approximately 4-5 hours. | DIY Safe |
N/A | Refrigerator does not cool sufficiently (Ambient temperatures too high) | Ambient temperatures too high | Regularly remove ventilation grilles. | DIY Safe |
N/A | The refrigerator isn't cooling on gas because the gas cylinder is empty. | Gas cylinder empty | Change gas cylinder. | DIY Safe |
N/A | The refrigerator isn't cooling on gas - check whether the supply shut-off device is open. | Supply shut-off device closed | Open the shut-off device. | DIY Safe |
N/A | The refrigerator isn't cooling on gas - there may be air trapped in the gas pipe. | Air in the gas pipe | Switch the appliance off and start it again, repeating this 3 to 4 times if needed. | DIY Safe |
N/A | The refrigerator isn't cooling on 12V because the on-board fuse has failed. | On-board fuse defective | Fit new fuse. | DIY Safe |
N/A | The refrigerator isn't cooling on 12V because the on-board battery is discharged. | On-board battery discharged | Check battery, charge it. | DIY Safe |
N/A | The refrigerator isn't cooling on 12V because the engine isn't running. | Engine not running | Start engine. | DIY Safe |
N/A | The refrigerator isn't cooling on 12V because its heating element has failed. | Heating element defective | Please inform the Dometic Customer Services. | Professional Intervention Required |
N/A | The refrigerator isn't cooling on 230V because the on-board fuse has failed. | On-board fuse defective | Fit new fuse. | DIY Safe |
N/A | The refrigerator isn't cooling on 230V because it isn't connected to the supply voltage. | No connection to supply voltage | Establish power connection. | DIY Safe |
N/A | The refrigerator isn't cooling on 230V - with AES fitted, it may be running on gas despite being connected to the supply voltage. | Insufficient supply voltage causing appliance to switch to gas operation | The appliance switches itself to gas because the supply voltage isn't sufficient, and will switch back to 230V automatically once it is. | DIY Safe |
N/A | The refrigerator isn't cooling on 230V because its heating element has failed. | Heating element defective | Please inform Dometic Customer Services. | Professional Intervention Required |
Frequently Asked Questions
Q: How do I exchange the battery in the Dometic refrigerator igniter?
Depress and turn the ignition button roughly 90 degrees anti-clockwise to release the battery. Take the cap off and fit a new battery (1.5V AAA / R3 / Micro), checking the polarity is correct.
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