P3
Royal Clima
Outdoor Low Temperature Protection / Anti-freeze in Heating
Indoor unit shows P3, unit may limit capacity or shut down under extreme conditions.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Very low outdoor temperature, Sensor misreading outdoor coil temperature, Defrost control logic limiting operation, Blocked outdoor coil with ice or snow
How to Fix / Troubleshooting
Safety first: Turn OFF power before removing ice or snow from the outdoor unit.
- Step 1 – Clear snow and ice: Gently remove snow around the outdoor unit and ensure the bottom drain holes are not blocked.
- Step 2 – Allow defrost cycles: Do not interrupt frequent defrost cycles in very cold weather; this is normal protection.
- Step 3 – Check outdoor coil sensor: If P3 appears in mild weather, the sensor may be faulty and should be inspected.
When to call a technician: Persistent P3 in normal temperatures requires professional diagnosis of sensors and defrost control.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Outdoor Coil Temperature Sensor (T3)
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements