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Old 09-25-2011, 11:20 AM   #16
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Sensor Fell off Trane XE1000. What is it?


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Originally Posted by Krell View Post
The black wire that curls at the end, and has a red tip, is the wire to the Crankcase Heater, I believe. There is also a twig or a pine needle lying on the bottom, pointing to the vertical grey cylinder. Speaking of crankcase heater, even if I reattach the sensor to the liquid line, it won't change the operation of the heat pump until I fix or replace the crankcase heater, right? Assuming the only function of that sensor is for the CCH. Fortunately the hp works fine even with the sensor off and the cch wire broken.
AC unit is going to be needed in the cold season. One wire coming from the side of the contactor, goes to the Crankcase Heater, after that it goes to the sensor connected to liquid line, and finally it closes the circuit to the other side of the contactor.

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Old 09-25-2011, 02:42 PM   #17
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Sensor Fell off Trane XE1000. What is it?


Thanks for the replies! How easy is it to replace the CCH, or fix the wire going to it? I guess I would remove the side panel, and lie on the ground next to the HP, and reach in sideways under the compressor.

There are some wires like paperclips sticking out of the bottom of the compressor next to that black and red wire that goes to the CCH. Are they part of the CCH? Why would the wire just snap off like it did?

The heat pump acted normal all Winter, and the heat bill was normal, so maybe I was just lucky so far.

If I run the HP in Winter with the CCH not working, will it ruin the compressor, or just run less efficiently?
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Old 09-25-2011, 02:46 PM   #18
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Sensor Fell off Trane XE1000. What is it?


Could damage the compressor by allowing liquid refrigerant to wash out the oil.
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Old 09-25-2011, 03:03 PM   #19
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Sensor Fell off Trane XE1000. What is it?


Its not easily changed after this many years. I install a belly clamp heater, if it doesn't come out easily.

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