!!
critical Honeywell
Error Code HEAT PUMP FAILURE
An issue was detected. Contact a professional to diagnose and service your heat pump.
? What Causes This
Hardware failure or malfunction of the heat pump system.
✓ How to Fix It
- Turn off the thermostat and HVAC system.
- Do not attempt to repair the heat pump yourself.
- Contact a professional HVAC technician or Honeywell customer support for service.
This error code appears in:
Honeywell T10 Smart Home Thermostat