York YHG42B21S 3.5 Ton 14 SEER 10 HSPF Affinity Series Heat Pump with Variable-Speed Compressor E10 Error Fix: Indoor Coil Freeze Warning

Error code E10 on the York YHG42B21S 3.5 Ton 14 SEER 10 HSPF Affinity Series Heat Pump with Variable-Speed Compressor means: Indoor Coil Freeze Warning. Sensors detect freezing conditions on the indoor coil, which can cause blockage and damage. This error triggers system shutdown or defrost operation to prevent harm.

The most successful fix is "Replace indoor coil temperature sensor" (medium difficulty, ~40 minutes). Estimated DIY cost: $30-$50. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace indoor coil temperature sensor") is rated medium difficulty and takes about 40 minutes. Tools needed: Phillips screwdriver, Multimeter.

DIY cost: $30-$50. Professional repair typically costs $130-$200. Many homeowners save money by trying the top-ranked community fix first.

The York YHG42B21S 3.5 Ton 14 SEER 10 HSPF Affinity Series Heat Pump with Variable-Speed Compressor has 8 other known error codes, including: E1 (High Pressure Switch Trip), E11 (Compressor Start Relay Failure), E12 (Communication Error Between Indoor and Outdoor Units), E13 (Outdoor Ambient Temperature Sensor Failure), E14 (High Limit Thermostat Open), and 3 more.

Error code E10 also appears on 6 other York models: DERA-P036N07 HP 16 SEER, GM9S080B12MP11 80,000 BTU 96% AFUE Single-Stage Upflow Gas Furnace, TM8E100C20MP11 100,000 BTU 80% AFUE Single-Stage Upflow Gas Furnace, TM9V080B12MP11 80,000 BTU 96% AFUE 2-Stage Variable-Speed Gas Furnace, YCG42B21S 3.5 Ton 14 SEER Affinity Series Air Conditioner with Scroll Compressor, YZH36B21S 3 Ton 16 SEER 9.5 HSPF Heat Pump with Environmentally Friendly Refrigerant. The fix may vary by model, so check each model's specific page for tailored repair steps.