Dometic Rooftop RV Air Conditioner - Page 6 - Answered Questions & Fixed issues

e7 means no 120 volt power to relay module.

i would replace breaker unless you have meter to read voltage

thermostat issue, relay stuck in on relay module or communication cable between

sounds like damper sticking closed to cooling coil

compressor not running try capacitor change.

relay module or faulty cable to it.

thermostat high speed relay

thermostat or communication issue.

error 7 is no 120 volt power to relay module.

relay module or communication cable issue

relay module, capacitor,communication cable

indicates no 120 volts a.c. at relay module.

my rv has one unit that acts as if its pulling sewer gas off roof while running some time worse then others.

fan should be in auto position on stat. if still runs fan relay stuck in

check breakers and dc fuses

if the gasket is bad it could leak

can be compressor try capacitors first

spray coil cleaner on surface of coil with fan running allow it to pull cleaner in coil then rinse

check dc fuses and breakers. need 120 volts a.c and 12 volts dc to operate

thermostat, cable or relay issue