If a P2 error code displays on a mini split, there are a few things a DIY type person can do before calling an HVAC tech.
Of course, if in doubt, always call a professional.
Below are some basic steps to troubleshoot and fix a P2 error code.
What is a P2 Error Code on a Mini Split?
A mini split P2 error code meaning is a “Diagnosis for over temperature protection of compressor’s top.”
This means the main-board is reading that the compressor is overheating and sending out the P2 error.
There can be a difference in errors depending on a manufacturer and model, so always verify your mini split error code with the manual for the unit.
What Causes a P2 Code on a Mini Split?
- Bad Ventilation
- Refrigerant Low
- Sensor
- Main PCB Board
The main control board is programmed to send out a P2 code to protect the compressor from overheating and becoming damaged.
An overload protector sensor located on the top of the compressor sends the signal that it is overheating.
Several things can cause this error with the steps below for what to check.
Steps to Troubleshoot and Fix a P2 code
Air conditioning will run about half a day an then p2 will appear . what could be wrong .
I’m having the same problem. Brand new never, NEVER cooled for even 5 mins
Finished installing 36k 4 weeks ago would not cool called in A/C Mechanic to fix low pressure a common problem with a MrCool 105 psi now 125psi $200 still not cooling runs for 5mins then shows P2 shuts down for 5mins then shows 00 stars up and shows fluctuating numbers 46-47, 55-56 runs for 5 mins shuts down shows P2 compressor top overheats if you install a MrCool you should allow for at least one professional visit $500 plus