Mitsi Electric PUHZ RP10 KVA Compressor will not run

[Chris2005]

This unit has been insalled about a week and was running great, but got a call to go and check the unit this eve (outdoor model PUHZ RP10KVA) about the unit not cooling.

Turned the unit on and the fans run outside for about 2 secs then off and repeats this about 5 times.

The outdoor unit is flashing fault code 3 green and 4 red .

I took the 3 wires off compressor and checked windings, 2 are 1.0 ohms and the other is 0.9.

When power is turned on with these wires disconnected thetre is 23.4v between 2 phases DC and the same fault code appears with the wires disconnected.

I have checked compressor wires where they go onto board and all seems fine.

Has anyone had this problem ?

Regards

Chris

[Chris2005]

Faulty power board

[moondawn]

hi chris

i recently ran up a mitsi system and had a problem where the compressor was making a noise and failing to start
had error lights cant remember what these were now.

turned out to be a faulty power board.

cheers lee

[Chris2005]

Hi lee

The compressor on this unit was doing nothing at all, the fans were the only thing that would run.
only the red wire was live to comp the other 2 nothing.

Its the first time this has happend to me normally mitsi are very reliable.

Regards

Chris

[moondawn]

Hi lee

The compressor on this unit was doing nothing at all, the fans were the only thing that would run.
only the red wire was live to comp the other 2 nothing.

Its the first time this has happend to me normally mitsi are very reliable.

Regards

Chris

i remember that all wires were live on mine, they were fluctuating i think just over a 100 volts i was told by mitsi that its the power board. someone fitted the power board and its all working now.

cheers lee

[Chris2005]

My new part will be here in the morning thankfully

Which should save a little ear bashing from the customer :)

[moondawn]

good luck let us know that it was defo the power board

cheers lee

[Chris2005]

Hi lee

I got the new board this afternnon and replaced it this evening.
I am pleased to say everything is working fine now :),

What part of manchester are you from?

[moondawn]

hi chris glad to hear it. i am from urmston what about yourself?

just noticed northern ireland :-)

[Chris2005]

Hi lee

My grandad used to live in flixton beside woodsend circle , I have a lot of family around that area as I was born there myself .
Hows the fridge trade over there at the min?

Regards

Chris

[moondawn]

hi chris yeah know it well lived here all my life.

its picking up at the company i work for, got quite a lot of work on so its very busy at the moment mate