Hi all,
I have an aircon unit that failed. Fault code 'PU' says the capacitor charging circuit failed, this is confirmed by checking the voltage at the three large electrolytic caps which show 43vdc, but oddly 85v ac. The expected voltage at the capacitors should be 180-380vac.
I am a low level electronics experience chap, so need some advice on how these caps would typically be charged.
They are used, as i understand it, to smooth the supply to the variable speed fan and compressor in the aircon unit.
Looking at the other test points on main pcb, everything else checks out ok.
Here is a link to the (large) manual for the aircon unit if any one fancies helping me out.
Id apreciate any help/guidance,
Many thanks,
Steve