Error Code H7: P4 or P6 or PE occur 3 times within 60 minute
Possible Cause
- Poor heat exchange on the evaporating coil
- Poor heat exchange on the condensing coil
- EEV/filter drier/indoor coil blocked
- Under charge
- Indoor unit motor stopped abnormally
- Discharge temperature sensor T5 fault
- High temperature and load
Troubleshooting
Check the history of fault code
SW3 Check button
| No. | Description |
|---|---|
| 1 |
Model display: 090: 7.5 ton 102: 8.5 ton 120: 10ton 150: 12.5 ton |
| 2 | T1 temperature(°F) |
| 3 | T2-A temperature(°F) |
| 4 | T2-B temperature(°F) |
| 5 | T3-A temperature(°F) |
| 6 | T3-B temperature(°F) |
| 7 | T4 temperature(°F) |
| 8 | T5-A temperature(°F) |
| 9 | T5-B temperature(°F) |
| 10 | Opening degree of EEVA |
| 11 | Opening degree of EEVB |
| 12 | Output frequency of VFD |
| 13 | Gear of FAN_OUT-A and FAN_OUT-B |
| 14 | The last fault code |
| 15 | Software version |
- If P4 occurs 3 times within 60 minutes - refer to Error code P4/P5
- If P6 occurs 3 times within 60 minutes - refer to Error code P6/P7
- If none of the above - refer to Error Code PE/PF
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.