An H15 code relates to the compressor discharge temperature sensor, located on the outdoor unit. This sensor monitors how hot the refrigerant gas is as it leaves the compressor, giving the system an early warning if things are running hotter than they should.
When this sensor loses connection or fails, the outdoor unit can no longer safely track compressor temperature and the system reports the fault to protect the compressor from damage. The cause is often a wiring or connection issue rather than the compressor itself.
Send us the code and a photo of the display, and a Ford & Doonan technician will get back to you. Please don't reset the unit before you take the photo.
(08) 9331 8800