Our Carrier 38AQS016 heat pump won't shut off when the thermostat is satisfied. The air handler shuts off but the outside fan and compressor continue to run. There is no siqnal on "Y" but there is on "W" (the orange wire) since the t-stat continues to send power on "w" as long as it is in the heat mode. If I remove the orange wire from the heat relay then it shuts down. If I apply 24 volts momentarily to CR3 in the aux box it will shut down. Could it have something to do with one of the 3 reversing valve relays or the no dump relay?