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I have a two stage geothermal system with electric aux.
Aux heat simultaneous is on
Compressor stage 2 delta is 2
Compressor to aux delta is 3
Heat differential is 1
Aux reverse staging is off
My set point is 66
The outside temp this afternoon is 20.
The thermostat seems to yo-yo between 63 and 66.
When it hits the set point, the aux and compressor turn off and only the fan remains on.
After it drops to 1 degree under set point, Stage 1 kicks in, but stage 1 isn’t warm enough to prevent the temperature from dropping an additional degree, at which time Stage 2 is enabled.
Stage 2 is usually able to slow the temperature degradation but eventually the temp drops another degree and on comes the Aux, which brings the temp back up to the set point and the process starts all over again.
Is this normal? Are there settings I should change?