Dometic Air Conditioner: “E0 / EA / EE”
warning RV air conditioner error codes
What it means
Electronics and drive faults on the FreshJet inverter board. E0 = communication failure between the control parts. E9 = compressor drive or IPM (inverter power module) fault. EA = current-sensor fault. EE = outdoor-board EEPROM (memory) fault.
Most likely causes
- Internal board/communication fault (E0, EE) on the outdoor power module common
- Inverter/IPM drive fault (E9), sometimes triggered by low or unstable campsite voltage common
- Current-sensing circuit fault (EA) less common
Safe checks you can do yourself
- For E9, check with campsite management whether the supply voltage is adequate, then restart
- Power the unit fully off for a few minutes and attempt one restart
- Confirm no loose obvious connection at the indoor control if accessible and safe
How to reset / clear E0 / EA / EE
- Disconnect shore power / AC breaker for about 2 minutes
- Restore a verified good supply and restart
When to call a technician
E0, EA and EE essentially always require an authorized Dometic service agent. For E9, call if it persists after confirming good supply voltage and a clean restart.
Applies to
Dometic FreshJet Series 4 (FJX) · Dometic FreshJet Series 7 (FJX) · FreshJet inverter rooftop units
FAQ
What does Dometic Air Conditioner code "E0 / EA / EE" mean?
Electronics and drive faults on the FreshJet inverter board. E0 = communication failure between the control parts. E9 = compressor drive or IPM (inverter power module) fault. EA = current-sensor fault. EE = outdoor-board EEPROM (memory) fault.
How do I reset Dometic Air Conditioner E0 / EA / EE?
Disconnect shore power / AC breaker for about 2 minutes Restore a verified good supply and restart
What is the most common cause of E0 / EA / EE on a Dometic Air Conditioner?
The most likely cause is internal board/communication fault (e0, ee) on the outdoor power module.
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Sources
- Dometic FreshJet Series 4 / Series 7 Operating Manual — 9620001685, Troubleshooting section, display codes E0, E9, EA, EE (Dometic)
Note: FreshJet FJX inverter codes. Note the FJX E-codes are NOT the same as the CCC2 thermostat E-codes used on Penguin II / Blizzard NXT zone systems (e.g. FJX E2 = evaporator coil sensor, whereas CCC2 E2 = indoor temperature sensor). Match the code set to the actual display/thermostat.
● Last verified 2026-06-29 · compiled from manufacturer documentation. Codes can vary by model year — always cross-check your unit’s manual.