Rheem Heat Pump blowing Reversing Solenoid

I have a 12yo Rheem Heat Pump that the HVAC tech can't figure why it is shorting out the reversing valve solenoid. It has been replaced twice and is out again. The tech is saying that he can't find any other electrical problem and that they are done trying to fix it. He says They'll give me credit from the repair bill toward a new system. Does anyone have any ideas on the cause?
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On 27 Dec 2008 17:28:04 GMT, dndutton93_at_aol_dot snipped-for-privacy@foo.com (ddutton) wrote:

My idea is that you are a dumbass if you keep having the same company look at it. Dumbass.
I am the real ftwhd and I approve this message.
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On 27 Dec 2008 17:28:04 GMT, dndutton93_at_aol_dot snipped-for-privacy@foo.com (ddutton) wrote:

Find a new tech. The one you had is an idiot.
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ddutton had written this in response to http://www.thestuccocompany.com/hvac/Re-Rheem-Heat-Pump-blowing-Reversing-Solenoid-36071-.htm : These type comments were not exactly what I was looking for and are not helpful. I am not looking to fix the problem myself but I also don't want to blindly go from one company to another paying trip fees and trying one thing after another just to find out they don't know what their doing either. That is how I ended up using this company on a previous problem that they actually fixed. ------------------------------------- The King wrote:

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On 27 Dec 2008 18:32:08 GMT, dndutton93_at_aol_dot snipped-for-privacy@foo.com (ddutton) wrote:

Awww such a sad story. Here, have a lollipop.
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http://www.thefreelibrary.com/Solving+solenoid+burnout-a011845237
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.. And now with pictures! (source document) Good tech Document.
http://www.detroitcoil.com/PAGES/What%20Is%20A%20Solenoid.pdf
-zero
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Thats all well and good *IF* the coil is the correct voltage in the first place.
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Rheem uses different voltage coils...depending on the application... Post model and serial number so I can make sure you have the correct part number for the coil
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ddutton had written this in response to http://www.thestuccocompany.com/hvac/Re-Rheem-Heat-Pump-blowing-Reversing-Solenoid-36084-.htm : Model # RPMA-042JAZ Serial# 5104G409600055
The first solenoid looked melted around the harness and it took out the thermostat and transformer through the common when it went. The tech put an in- line fuse in to prevent that from happening again. Both times afterward the Solenoid appeared to be just cracked. He thought the initial replacement might have been just a bad one from the supplier. The unit ran initially after each replacement. Sometime around 5-6 hours later I would realize that it wasn't working again. The tech called me today and came out on his day off to look it over again. He checked the operation of the defrost board and went over all the wiring again. He is still stumped. ------------------------------------- Noon-Air wrote:

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http://www.thestuccocompany.com/hvac/Re-Rheem-Heat-Pump-blowing-Reversing-Solenoid-36084-.htm
The correct number for the solenoid coil is 61-22883-81. The tech needs to make sure he has the correct coil. Has the defrost board ever been replaced?? If so, was it the correct OEM board?? or did the tech use a generic or "fitzall" board?? There are only 2 boards that are correct for that heat pump... the timed defrost board, and the demand defrost upgrade.
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ddutton had written this in response to http://www.thestuccocompany.com/hvac/Re-Rheem-Heat-Pump-blowing-Reversing-Solenoid-36160-.htm :
------------------------------------- Steve wrote:

The defrost board had been replaced a couple of years ago. I'm sure it was a generic board because they had to come back out a second time to ground it and it is wired in a little different than originally. The tech was looking hard at that but when he forced it in to defrost mode he said it worked right and had the correct voltage. He was talking about replacing it anyhow with an OEM. Thanks to all with constructive feedback. I'll pass this information on to the tech.
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ddutton had written this in response to http://www.thestuccocompany.com/hvac/Re-Rheem-Heat-Pump-blowing-Reversing-Solenoid-36084-.htm : Model # RPMA-042JAZ Serial # 5104G409600055
The called me today and came out on his day off to go back over everything. He checked the operation of the defrost board and then went over the wiring again. The first solenoid looked melted around the connection to the harness. The other 2 were just cracked. Each of the replacements initially worked but would go out within 5-6 hours.
------------------------------------- Noon-Air wrote:

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