Dometic · FreshJet FJZ rooftop air conditioners
EEExternal EEPROM fault
The controller detected a problem with external configuration memory.
What it means
Plain-English answer
EEPROM stores control information required by the unit. EE indicates a memory or control-board fault rather than an owner-adjustable setting.
Owner-safe checks
What to check first
- 01
Record the exact code and equipment model.
- 02
Perform one normal HVAC power cycle.
- 03
Leave the unit off if the code returns.
Safety boundary
Stop and call a technician when
- Do not attempt to reprogram or replace control memory.
- Contact an authorized Dometic service agent.
Primary reference
Check the exact manual
Applicability: FreshJet FJZ rooftop air conditioners. The data plate and specification letter determine which procedure is correct.
Open Dometic FreshJet FJZ operating manual ↗Source reviewed August 2026