When this thermostat call for aux. heat, it reads aux. heat on the pad but no heat. The aux. heat works in manual mode. I think a setup code is wrong since it has never done right. Could someone help.

I don't get your question. When this thermostat call for aux. heat, it reads aux. it says aux heat because it is aux heat. Set temp within 1 degree of room temp, is the heat pump working?

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Originally Posted by NorthernHeat

I dont get your question. When this thermostat call for aux. heat, it reads aux. it says aux heat because it is aux heat. Set temp within 1 degree of room temp, is the heat pump working?

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The thermostat reads aux. heat, but the elements are not coming on. When moved to manual aux. heat, it comes on. The red light then comes on in the upper right corner of thermostat.

Is this a heat pump?

This is a 1 year old replacement 3 1/2 ton Goodman heating and air. Heat pump works fine except when it gets cold enough and calls for aux. heat. The thermostat displays aux. heat, but the elements don't come on. It works on emergency heat. The new thermostat was installed at the same time the heat pump was replaced. All wires seem to be connected correctly on thermostat.

Put a jumper wire in from aux and emergancy. If you can tell me what the terminals are on that stat I can be more specific.

These are the terminals and connections on this thermostat. Y2,L, E- blue wire, aux.-white wire, S1,S2, RC-R- red wire, O/B-orange wire. Y-yellow wire. G- green wire. C- black wire.

Ok jumper E and Aux

Its 20 degrees and its working like a charm. Thanks very much, and my wife thanks you.