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Member Since 18 Jun 2013
Offline Last Active Jun 19 2013 01:57 AM

Topics I've Started

Compressor wont start, seems to be overload relay?

18 June 2013 - 04:17 AM

Hi, Great forum!
I have a problem with a fridge where the compressor stopped coming on and was wondering how to approach it.
On plugging it in, the fans come on immediately, about 30 seconds later there is a single click, but none of the usual compressor running noises.
After unplugging the fridge, there is another click a few minutes later with the power completely removed, I'm guessing after its cooled down.
I searched around and got a multimeter to test the compressor. None of the windings seem grounded, no beep on continuity mode between any of the 3 pins and the paint scratched case or suction line. They ohm out to 2, 3, 5 which seems to mean the compressor is ok.
I opened the PTC relay and found that the small disc inside wasn't shattered and shaking around in the case the way they commonly fail. The disc was in perfect shape but covered in some residue, so I sanded a thin layer off both sides to make it look silver again and put it back into the relay.
For the capacitor I'm not sure how to test that, so its an unknown to me.
But it seems the overload relay is the problem. It clearly rattles when you shake it. 
Some questions:
If the overload relay rattles, is it definitely faulty?
I saw there was a 'factory reconditioned' overload relay for sale so I was curious what they actually do to recondition these. Can these overload relays be fixed instead of replaced? 
I've seen the price for this overload relay alone is about the same as a 3-in-1 compressor start kit. Should I replace the whole bunch(PTC relay, overload relay and capacitor) with a 3-in-1? Or only replace the overload relay which seems to be the broken part?
Any advice would be very appreciated. Thanks!

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