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I have an Aquatherm AT600 pool heat pump with a bad defrost sensor. does anyone know wher I can get a replacement sensor?

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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SOURCE: Heat pump will not start

Could be a firmware issue and require a new mother board. Unfortunately, you probably have done all you can on your own. Time to call the local HVAC service person...

Posted on Apr 22, 2010


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Heat pump only runs for a few min in heat mode, then switches to cool and will not produce warm air until the system is turned off and back on.

The defrost sensor or timer is bad. When the heat pump runs in heating mode the outdoor coil gets very cold and needs to defrost every four hours or so. When it does this it goes into cooling and turns on the auxiarlly heat.
The unit will have to be checked to see if the timer is just going right into defrost mode or if the sensor is telling it to go into defrost mode.
It probably would not be a bad idea to just replace the both pieces since they work in conjunction with each other.

I hope that this will help you to solve your problem!

Thanks for using Fixya!!


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