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Dometic ยท 19 codes

Dometic FreshJet Series 4 / Series 7 air conditioner fault codes

Every fault code, display message, and status light listed in Dometic's manuals for Dometic FreshJet Series 4 / Series 7 (FJX). Select a code for what it means, what you can safely check, and when to call a technician.

Confirm your model

Codes are model-specific. Match the model number on the appliance data label to one of these before using the table:

FreshJet Series 4, FreshJet Series 7, FJX4333EEH, FJX7333IHP

Where to look and what to record

  • Full FreshJet model and serial number from the data label
  • Wall control or display code photo
  • Shore-power or campsite voltage context and active loads
  • Recent service history and prior recurring codes

Code table

CodeWhat the manufacturer says
P0Over temperature or over current on the IPM module
P1Under voltage protection
P2Unit AC over-current protection
P3Overvoltage protection
P4Discharge tube overheat protection
P5Evaporator coil protection in cooling mode
P6Condenser coil protection in cooling mode
P7Evaporator coil protection in heating mode
P9Compressor drive abnormal or compressor does not start
E0Communication failure
E1Room temperature sensor fault
E2Evaporator coil temperature sensor fault
E3Condenser coil temperature sensor fault
E7Outdoor temperature sensor failure
E8Discharge tube temperature sensor failure
E9Compressor drive or IPM module fault
EACurrent sensor fault
EEOutdoor EEPROM fault
ELLIN-BUS/CI-BUS communication failure

Disconnect power before any FreshJet service. Refrigerant-circuit, sealed-system, sensor, fan, drive, electrical protection, roof seal, and internal component work is for authorized Dometic service or qualified RV HVAC personnel.

Troubleshooting guides

Official manuals and support pages

DometicDometic FreshJet Series 4, FreshJet Series 7 Operating Manual