ICP Heat Pump Error Codes
11 ICP Heat Pump error codes and diagnostic codes, with causes and troubleshooting steps for each. Select a code, or find your model below.
ICP Heat Pump error codes list
| Code | Meaning | Severity |
|---|---|---|
| 1 | Long run time | Medium |
| 2 | System pressure trip | High |
| 3 | Short cycling | Medium |
| 4 | Locked rotor | High |
| 5 | Open circuit | High |
| 6 | Open start circuit | High |
| 7 | Open run circuit | High |
| 8 | Welded contactor | Critical |
| 9 | Low voltage | Medium |
| Red TRIP LED | Comfort Alert TRIP - Y1 call but compressor not running | High |
| TRIP + ALERT flashing together | Control voltage too low | Medium |
Find codes by ICP model
Heat Pump troubleshooting guides
- Comfort Alert module basics ICP · Heat Pump
- Defrost not working - test the defrost board ICP · Heat Pump
ICP Heat Pump specs and setup data
- Outdoor unit clearances ICP · Heat Pump · ICP N4H3 Heat Pump
Homeowner help: AC Running But Not Cooling: What to Check · Heat Pump Not Heating or Blowing Cold Air
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.