Dometic thermostat troubleshooting

Dometic 3313192 thermostat troubleshooting

CodeDescription
E1Loss of communication between the Single Zone LCD thermostat and the module board. LCD will cycle between E1 and the previous mode setting. System will shut down.
E2Open circuit or out of range Indoor Temperature Sensor. Heating and cooling operation will be locked out. Fan operation can continue to operate.
E3Shorted Indoor Temperature Sensor. Heating and cooling operation will be locked out. Fan operation can continue to operate.
E4Open circuit or out of range Outdoor Temperature Sensor (select models). Heat Pump operation will be locked out. Air Conditioner, Fan and Furnace operation can continue to operate.
E5Open circuit or out of range Freeze Sensor. Air conditioner mode of operation will be locked out. Furnace, heat strip, heat pump and fan mode of operation can continue to operate but displays the last temperature set-point.

Dometic CCC 2 thermostat troubleshooting

Error codeCause \ Solution
E1Loss of communication between the CCC 2 thermostat and all system power module boards. System will shut down.
Loss of communication between the CCC 2 thermostat and an individual system power module board. The LED will display error code E1 and the zone number that lost communication. Any additional zones that lose communication will blink in addition to the current zone.
E2Open circuit or out-of-range Indoor Temperature Sensor. All heat, cool, and dehumidify operation will be locked out. Manual fan operation can continue.
E3Shorted Indoor Temperature Sensor. All heat, cool, and dehumidify operation will be locked out. Manual fan operation can continue
E4Open circuit or out of range Outdoor Temperature Sensor (Select Models). Heat pump and dehumidification operation will be locked out. Air conditioner, furnace, heat strip, and fan operation can continue to operate
E5Open circuit or out of range Freeze Sensor (Select Models). Air conditioner and dehumidification operation will be locked out. Heat pump, furnace, heat strip, and fan operation can continue to operate but displays the last temperature set-point
E6Open circuit Humidity Sensor (Select Models). Air conditioner and dehumidification operation will be locked out. Heat pump, furnace, heat strip, and fan can continue to operate
E7Loss of 120 VAC power to all power module boards on the system. The system will shut down
E8Invalid zone configuration. The heat pump and heat strip DIP switches are both set to the ON position in one zone. Heat pump, heat strip, air conditioner, and dehumidify operation will be locked out in the affected zone
E9Invalid zone configuration. The dehumidifier DIP switch and either the heat pump or heat strip DIP switches are set to the ON position in one zone. Heat pump, heat strip, air conditioner, and dehumidify operation will be locked out in the affected zone

Error codes and troubleshooting