[gooned]

Hello,

I just installed a Honeywell 7500 thermostat for my 2 stage heat pump. Being new to heat pumps, I'm not quite sure of some things. While on heat and cold weather outside (25F), I notice the compressor and indoor fan is on almost constantly. The thermostat is set on Heat.

The thermostat manual says the following:

Heat - Thermostat controls only the heating system

Em Heat (only for heat pumps with auxillary heat) - Thermostat control Emergency and Auxillary Heat. Compressor is locked out.

Two questions:

1) What is the difference between Emergency and Auxillary heat?

2) Which setting should I use?

Any help or rules of thumb are appreciated.

Thank you,

T