Duo Therm heat pumps can become a pain in the neck if you aren’t aware how to fix the possible problems in their functioning. You shouldn’t get ready for this head of time, but such thing can happen. It’s not a big problem because here you can see the manual with the error codes which is ready to help you with repair in a difficult situation.
| Digital display code | Fault condition | Note |
|---|---|---|
| E1 | Room temperature sensor fault | Call for service |
| E2 | Evaporator sensor fault | |
| E3 | Communication fault | |
| E4 | Condenser sensor fault | |
| H1 | Defrosting instructions | Indicates defrosting in progress |