E5
York · YHG42B21S 3.5 Ton 14 SEER 10 HSPF Affinity Series Heat Pump with Variable-Speed Compressor
The indoor fan motor has stopped or is running erratically due to electrical issues or mechanical wear. This results in poor airflow and reduced heating or cooling performance.
Error E5 on the York YHG42B21S 3.5 Ton 14 SEER 10 HSPF Affinity Series Heat Pump with Variable-Speed Compressor means: Indoor Fan Motor Fault. The top-ranked community fix is “Replace indoor fan motor” (medium difficulty, ~60 min, DIY cost: $80-$120). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · heat pump
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many heat pump repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $200-$300.
High Pressure Switch Trip
Indoor Coil Freeze Warning
Compressor Start Relay Failure
Communication Error Between Indoor and Outdoor Units
Outdoor Ambient Temperature Sensor Failure
High Limit Thermostat Open
Freeze Protection Sensor Open
Drain Pump Failure
The York YHG42B21S 3.5 Ton 14 SEER 10 HSPF Affinity Series Heat Pump with Variable-Speed Compressor has 8 other known error codes:
Error code E5 also appears on 3 other York models:
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