Forum Discussion
dougrainer
Aug 06, 2014Nomad
Boxer Lovers wrote:
It cools as it should. I'm not hearing the usual heat pump sounds, so it may not be functioning.
What are the usual HP sounds???????? There is no difference. ALL that happens is the coolant flow is reversed to Heat instead of Cool. As others have stated, either the Install was wrong or your reversing valve is having a problem. On the NEW Dometic HP's, the default is COLD instead of heat when you have a malfunction of the Reversing valve circuit. On the 12 button wall CCC system , you have to tell the HP control board it is a HP. There is a DIP switch on the HP control board that must be turned ON to tell it, it is a Heat Pump. I will bet the installer did not turn that DIP switch ON. It is DIP switch number 7 on the board. Doug
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