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Old 07-10-2007, 06:17 AM   #1
DMC
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1969 23' Safari
St Charles , Missouri
Join Date: Jul 2007
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Schematic wiring diagram for Armstrong AC TR21-12, GO7series

I am looking for a wiring schematic diagram for Armstrong AC, model TR21-12, GO 7 series.

History: my Airstream got plugged into the wrong voltage (by an electrician!!) and the thermostat and AC got zapped out. Parts were found --new compressor, new blower fan, etc, but, while each part works separately now, it seems that some of the internal wiring got fused and needs redoing.

Is there anyone who works on these ACs in a case where no new parts are needed - -just wiring??
Any repair-person between St Louis and the East Coast?? Anyone anywhere in the USA??

In the meantime, I would love to get my hands on a schematic diagram of the wiring of the model TR21-12. Is there anyone who has one to post on the internet? or to scan and email to me? or to zerox and snailmail to me? ....anything, anyone?

DMC
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Old 07-11-2007, 07:59 AM   #2
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I have a wiring diagram for a TR25 from my '76 if you think it would help .
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Old 10-06-2007, 09:04 AM   #3
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2016 Interstate Grand Tour Ext
Bosque Farms , New Mexico
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I have a similar need. The plan is to work on the unit (ours is a 1967). When I removed the electrical hatch cover, there was a wiring diagram inside the cover, but it is so deterioriated that major parts of it can't be read. Does anybody have a diagram?

Lynn
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Old 10-06-2007, 10:00 AM   #4
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1971 23' Safari
Atlanta , Georgia
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Armstrong repair

A couple of years ago I had to replace the compressor and starting caps on my Armstrong AC. The same company that repairs my home AC did the work. The challenge was trying to explain to them over the phone my situation. The first time the assistant said, we don't work on RV's. So I waited a day and called back and said "I'm having compressor problems with my AC" - so they scheduled a repair. I had already ordered the replacement part. When the guy arrived, I showed him how to climb up on the roof with me. He replied, this is just like working on a refridg. He replaced the compressor and new starting caps. Then put on a new thermostat control.

It works better than ever and that was three years ago.
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Old 10-06-2007, 12:01 PM   #5
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Hey, I guess I don't need the schematic after all. Under the access cover was a 4MFG 330 volt capacitor that was deader than a doornail. I found an exact replacement on Ebay just minutes ago.

Lynn
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