Mitsubishi Error Code U5: Abnormal Condenser Temp
Warning: Your Mitsubishi HVAC system has detected an abnormal condenser temperature, which could lead to system damage if not addressed.
How to Fix Mitsubishi Code U5
- Check and clean the outdoor unit if accessible and safe to do so.
- If the outdoor unit is dirty, turn off the system and contact a professional HVAC technician.
- If you suspect low refrigerant levels, turn off the system immediately and contact a professional.
How to Reset Mitsubishi Code U5
- Turn off the unit using the remote control or wall controller.
- Turn off the circuit breaker for the outdoor and indoor units. Wait 60 seconds.
- Restore power at the breaker.
- Turn the unit on with the remote control. If the error returns, the fault needs professional diagnosis.
What does U5 mean?
The U5 error code on your Mitsubishi HVAC system indicates that the condenser temperature is higher than normal. This could be due to a few reasons, such as a dirty condenser coil, a faulty temperature sensor, or a problem with the refrigerant system. It's important to address this issue promptly to prevent further damage to your system.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Condenser coil | — | — |
| Temperature sensor | — | — |
| Refrigerant | — | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| 1 | Indoor/Outdoor Mismatch | Warning |
| 2 | Power Supply Phase Error | Warning |
| 3 | Communication Error | Warning |
| 4 | Inverter Error | Warning |
| 5 | Outdoor Thermistor Open/Short | Warning |
| 6 | Indoor Freeze/Overheat | Warning |
| 7 | Outdoor Freeze/Overheat | Warning |
| E6 | Indoor/Outdoor Communication Error | Warning |
| E9 | Indoor/Outdoor Communication Fault | Warning |
| P1 | Intake Sensor Error | Warning |