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Amana upright frost free freezer, early 1970's vintage

Freezer case has line voltage  (120 volts) in the case (box) .  The ground plug has been isolated with a 2 prong connecter.  Freezer runs in this  mode, other wise there is a "dead short to ground".  Is is likely the defrost heaters are shorted to case? or compressor has internal short?  My last test showed no short to ground (case) when compressor running but 120 volts in case when compressor off, pressumably when in drefrost cycle. The defrost timer was removed from contact with the case.  However previous test with every thing in place had 120 volts in the case when compressor was running and none  when compressor off----HUH?

Posted by legnirc on

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Anonymous

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For the love of God get rid of this death trap.

It could be that it was meant to have a neutral earth, ie the neutral is connected to earth at the substation and house inlet and somehow the live and neutral has become reversed at the plug.

You have seen the case becomes live, this may be happening due to leakage current or a short as you say.

Either way the earth was there for a reason, to stop the case from becoming dangerous and you have removed that protection.

Neither the heater element or motor windings should have continuity to the case, I'd disconnect and check these out individually to isolate the problem and repair it, then put the earth connection back before using the freezer.

Posted on Oct 29, 2007

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