GE heat pump air conditioner displays H1 and does not immediately provide heat

Note: On many GE heat pump models, H1 is a normal indication that the unit is in defrost or preheat mode, not a fault.

Steps:

• Wait cycle out: Allow 10–15 minutes for the H1 indication to clear as the unit completes its defrost or preheat cycle.
• Check outdoor coil: If accessible, inspect the outdoor coil for heavy frost or ice buildup. Ensure airflow is not blocked by snow, leaves, or debris.
• Clean coil and clear obstructions: Gently remove debris and ensure proper clearance around the outdoor section.
• If H1 never clears: The defrost sensor or control board may be faulty. Have a technician test the outdoor coil thermistor and defrost control logic and replace the faulty component.