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Old 08-22-2009, 09:44 PM   #46
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Noisy solenoid chatter and compressor won't kick in now


Can't tell.

You didn't say how you jumpered the wiring when it was running without the thermostat calling.

Find where the wires that go/use to go to the solenoid where connected. And run a new wire from that point on.

Normally. You would turn the thermostat to off. And test from Y to common to see if it had voltage. That would then indicate a bad stat, or short in the wires if it still had voltage.

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Old 08-22-2009, 10:04 PM   #47
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Noisy solenoid chatter and compressor won't kick in now


I removed the jumper straight from the transformer before I jumpered the thermostat so the wiring was back to original condition. That jumper was red to red and white to white at the solenoid with the solenoid wires attached. No yellow wire around that area, only red white green. It looks like the red to green circuit is good because the blower kicks in but the red to yellow is open with the thermostat set below room temp since it takes the jumper wire red to yellow to get the compressor on when the thermostat is engaged.
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Old 08-22-2009, 10:32 PM   #48
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Noisy solenoid chatter and compressor won't kick in now


Don't alter the wiring.

Just replace defective wire if you find any.

Or you'll make matters worse.
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Old 08-23-2009, 09:57 AM   #49
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Noisy solenoid chatter and compressor won't kick in now


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Originally Posted by David H10 View Post
Although I read 18.6VAC across the transformer, I read 27.2 red to white at the thermostat.
?
Post a partial schematic with your readings on it. This is making less and less sense. Reading current flow wouldn't hurt, either.

Last edited by Yoyizit; 08-23-2009 at 10:09 AM.
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Old 08-26-2009, 11:03 PM   #50
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Noisy solenoid chatter and compressor won't kick in now


It was the thermostat. Replaced it and all is working. Thanks for the help.
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Old 08-26-2009, 11:57 PM   #51
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Noisy solenoid chatter and compressor won't kick in now


A number of posts were removed off this thread that were rather insulting to the original poster.

If you guys suspect something is going on that doesn't fit here, in the future refrain from publicly leveling accusations and namecalling and contact a moderator. No further discussion on this matter is necessary.
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Old 08-27-2009, 05:22 AM   #52
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Noisy solenoid chatter and compressor won't kick in now


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It was the thermostat. Replaced it and all is working. Thanks for the help.
If your meter can check the amp draw of the soleniod valve, check its amp draw. It may have been what caused the thermostat to go out.

Most thermostats have a 1 amp max draw per load terminal. So the Y terminal should not have more then one amp of load on it.
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Old 08-28-2009, 07:37 PM   #53
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Noisy solenoid chatter and compressor won't kick in now


Yes don't want to lose the new thermostat. I may just replace the darn thing if I can find a new one. It's an old design.
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Old 08-28-2009, 07:43 PM   #54
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Noisy solenoid chatter and compressor won't kick in now


That can be difficult on some older ones.

Grainger may be your best option for one.

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