Fault codes / Dometic fridge / E3

Dometic fridge code E3

What it means: Cooling unit malfunction.

What to check

This is not the LP ignition code. Check heat on both LP and AC, ventilation and level. Run the full-run test. May need a cooling unit.

Learn the system

• Absorption fridges (gas/electric)
• 12V compressor and residential fridges
• Absorption fridge won't run on gas
• Absorption fridge won't run on electric

Practice it on a service call

• Fridge won't run on gas
• Fridge is warm after unplugging
• Fridge works on gas, not electric

Guided diagnosis

• Refrigerator
• Refrigerator: Compressor / Residential

Other Dometic fridge codes

• Dometic fridge code E0 Display not talking to the power module
• Dometic fridge code E1 LP operation hardware fault
• Dometic fridge code E2 Temperature sensor or its circuit
• Dometic fridge code E4 DC voltage out of range
• Dometic fridge: Flashing LP LP ignition did not finish

Full field guide: Dometic absorption fridge

Codes come from the maker manuals and public service sheets. Your model's own chart always wins, and LP and 120 volt work belongs to a qualified technician.