Heatpump Wiring & HVAC Setup CodesUpdated 2 years ago
The thermostat will support up to 2-stages of compressor (Y1, Y2), a configurable Reversing Valve (O/B), fan control (G) and 1-stage of emergency/aux heat (W2/AUX).
The thermostat is powered on terminals RH and C. W1-O/B and W2-AUX are multi-purpose terminals and requires an HVAC setup code before it can be used to control the HVAC equipment.
Basic Heat Pump Setup Codes:
| Heat pump systems | Code |
| 1-stage heat pump, No Aux heat, RV on cool | 31N |
| 2-stage heat pump, No Aux heat, RV on cool | 86N |
| 1-stage heat pump, with Aux heat, RV on cool | 31P |
| 2-stage heat pump, with Aux heat, RV on cool | 86P |
| 1-stage heat pump, No Aux heat, RV on Heat | 31J |
| 2-stage heat pump, No Aux heat, RV on Heat | 86J |
| 1-stage heat pump, with Aux heat, RV on Heat | 31L |
| 2-stage heat pump, with Aux heat, RV on Heat | 86L |
See Setting the Primary/Advanced HVAC Control Configuration section for more details.