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A/C comes on, compressor runs. Changed out blower motor, and capacitor, transformer, and contacts. But the heat strips still come for some odd reason, and cant figure out what is wrong. Contacts by the strips was stuck together, more or less burnt up. What else could be wrong.....

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The thermal relay that controls the elements is probably welded shut. If elements come on and turn off with the a/c then something is wrong in the low voltage wiring. You will need an amp clamp meter to see which element(s) are running, check both wires going to each element as an element can break and short to ground causing it to run somewhat. Once you find what element(s) are running, trace the wires back to the sequencer. Check the bottom terminals on the sequencer for 24v. If you have 24v at sequencer, you have a problem with the low voltage wiring, if not then the sequencer has failed and must be replaced.

Posted on Jun 20, 2008


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Best regards, and I hope this helps. --W/D--

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High Pressure cutoff

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