Panasonic H11 - CS-E24GKR

[Rexy]

Fellas,

Got a H11 fault, interconnect is fine - double checked. Outdoor measures 40VDC disconnected from indoor, 2VDC when connected - indoor PCB faulty yeah? Replaced both power board and control board and still have the same symptoms....

Anyone with a bit more experience with panasonics know what could be going on? Vane motors work and fan also work if it matters.

Thanks

[nedst]

If you have replaced both pcb's in indoor unit ans still same error than it must be oudoor pcb. I have the same problem with panasonic cu-re12jkx-1 but don't have any parts and outdoor pcb is too expensive .Maybe you can try to unplug sensors in indoor unit ,some times they block the pcb in a way that it shows a different error.

[Loops]

H11 relates to the inverter compressor operation or inverter PCB.
First check comp windings :- are the readings balanced between terminals and open circuit to earth? Yes & No respectively hopefully.
Then check compressor start current - these are soft start (approx 0.5to 1.0 Amp). If drawing 10+ Amps then PCB OK but seized compressor.
Rgds
Loops