Northy303
04-12-2020, 10:17 AM
Hi,
I am going to investigate a mitsubishi PUHZ-ZRP140YKA that had a blown noise filter board, a new noise filter board has been replaced and blown immediately. I have contacted Mitsubishi and they tell me that it is a problem with the incoming power supply possibly voltage down the neutral.
I will check this first but after studying the wiring diagram and photos of our blown board it looks like power for the fan motors come off the nf board .
So my question is looking at this wiring diagram could the DC fan motors blow this nf board.
Thanks in advance.
I am going to investigate a mitsubishi PUHZ-ZRP140YKA that had a blown noise filter board, a new noise filter board has been replaced and blown immediately. I have contacted Mitsubishi and they tell me that it is a problem with the incoming power supply possibly voltage down the neutral.
I will check this first but after studying the wiring diagram and photos of our blown board it looks like power for the fan motors come off the nf board .
So my question is looking at this wiring diagram could the DC fan motors blow this nf board.
Thanks in advance.