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Haier HF71CL53NW freezer, compressor won't start


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Posted

This is a 7.1 cuft freezer.  Freezer Tag  Compressor tag  starter relay/overload   

Above you will find links to the pictures.  The freezer quit working.  The compressor may try to come on, run a few seconds (3-5 seconds tops) and then stop.  Based on the pin out on the compressor tag, I ohmed out the compressor.  Results were:  c-s = 6.0,  c-m = 7.1.  s-m = 12.6.  The c-s value is a little high, but not horribly.  There is no run or start capacitor.  Other videos or references to this freezer or compressors like mine show one, but mine does not.  The starter relay is a PTC thermistor.  Disc is not broken, but the resistance across the start and run terminals of the relay at room temperature is 145-150 ohms.  Seems like that should be way less based on what I've found on the web.  It's hard to find info on this unit, and replacement parts even less.  Tried a cheap universal overload ptc starter from ebay universal ptc relay.  This didn't make a difference.  Since I bought freezer used a few years ago to turn into a beer kegerator, I'm trying not to spend a million.  I have an external temperature controller so that it doesn't get too cold and so I can finely control the temp.  I bypassed both the external controller and hard wired around it's built in temp probe and control.  So, I am basically plugged straight into the wall which then goes straight to the compressor starter relay.  Just thought I'd point out that there is nothing external to the compressor to stop it.  Considering that the compressor does spin, shouldn't that mean it's still good?  The only thing that I didn't do was check each pin to the compressor ground to make sure it isn't shorted to ground, but again, it will run, just for a few seconds.  Should I try a Supco (or similar) hard start?  Should I just add a run cap to the existing or universal replacement relay?  Even the Zel compressor catalog shows a 10mFd  (micro) run capacitor in their catalog for that model compressor.  Any further troubleshooting suggestions or parts suggestions are welcomed.

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  • snapperon

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Posted

Ok, did some more e-learning (Google and YouTube).  I now understand better how a PTC thermistor works.  Verified that there are no pins on the compressor shorted to ground.  I also put my amp clamp meter on it.....and that is where I am lost.  It will start, run up to about 6.5A-13A (all this is happening within about 3 seconds), then settles to 1.4A, which is the run amps, then shuts off with the thermal overload.  Why does it stop?  After about 2 minutes, the overload closes off, but the compressor doesn't start, and clicks back open within maybe 2 seconds.  I'm pretty sure the compressor is spinning.  It's not just humming.  It sounds like normal, but just for about 3-5 seconds.  Should I add a run capacitor?  Is there trouble shooting that I am missing?  

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