Fujitsu hot fan motor

[Paul a/c]

Hi all has any one had a fault on a fujitsu when control locks it self on. We had this found fuse blown on power board indoor unit and fan motor had gone , replacement parts come down stripped unit replaced fan motor, power board, powered up and tested.the same control locked again and new fan motor did not run just got really hot .we thinking it could be a fault motor which has come down. But the control locking its self .

[install monkey]

if its an ac fan then check the capacitor

[Paul a/c]

Yeah it's an AC fan checked capacitor 15 mf. We have one outdoor unit which looks like a vrv. Supplying two ducted units it's the slave unit which had the blown power board, and failed fan . Going to try anther motor tomorrow. And may run in a new cable as it's a mess and we are getting power from neural to earth. From 110 to 64 volts

[marc5180]

Going to try anther motor tomorrow. And may run in a new cable as it's a mess and we are getting power from neural to earth. From 110 to 64 volts

Do you not think you should find out why you have voltage on the neutral before replacing fans and any more PCBs?

[Paul a/c]

Going to run a new 3 core power cable from master 123 to slave 123 as it's some where here we picking up the voltage . Then bell out the cable to the roof which comes from outdoor unit to the indoor master unit , and check isolaters as well could be a neutral fault some where.

[Paul a/c]

Hi all
checked all cables today found the fault. Which was the new fan motor . The last thing you think is going to be faulty, stripped out the new faulty motor and fitted one in from a unused floor. All working great now