Dometic Heat Pump Troubleshooting

In the table on this page you can find the detailed descriptions of errors which may happen to your Dometic heat pump. If you are not sure about the reason of your heat pump not working, look at the digital display code and find the key of the problem.

There are several different codes which tell you the cause of heat pump not cooling. While the real reasons may be different, like heat pump fan not spinning or sensor fault, there are notes about the correspondent actions you should do to solve the problem.

As the construction of Dometic is not simple, do not try to do repair by yourself, just discover the reason, and call the specialists to fix it.

Dometic HB 2500 Heat Pump Troubleshooting

Digital display codeFault conditionNote
E1Room temperature sensor faultCall for service
E2Evaporator sensor fault
E3Communication fault
E4Condenser sensor fault
H1Defrosting instructionsIndicates defrosting in progress