York YZH36B21S 3 Ton 16 SEER 9.5 HSPF Heat Pump with Environmentally Friendly Refrigerant E10 Error Fix: Communication Fault Between Indoor and Outdoor Units

Error code E10 on the York YZH36B21S 3 Ton 16 SEER 9.5 HSPF Heat Pump with Environmentally Friendly Refrigerant means: Communication Fault Between Indoor and Outdoor Units. The communication link between indoor and outdoor units is lost or corrupted. This error can cause system shutdown or improper operation.

The most successful fix is "Inspect and Repair Communication Wiring" (medium difficulty, ~40 minutes). Estimated DIY cost: $0-$10. HomeMD has 2 community-ranked fixes for this error.

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Yes — the top-ranked community fix ("Inspect and Repair Communication Wiring") is rated medium difficulty and takes about 40 minutes. Tools needed: Multimeter, Wire stripper, Screwdriver.

DIY cost: $0-$10. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

The York YZH36B21S 3 Ton 16 SEER 9.5 HSPF Heat Pump with Environmentally Friendly Refrigerant has 8 other known error codes, including: E0 (Outdoor Ambient Sensor Fault), E1 (Indoor Coil Temperature Sensor Fault), E11 (Indoor Coil Freeze Protection Sensor Fault), E12 (Compressor Start Relay Fault), E13 (Outdoor Coil Freeze Protection Sensor Fault), 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, YHG42B21S 3.5 Ton 14 SEER 10 HSPF Affinity Series Heat Pump with Variable-Speed Compressor. The fix may vary by model, so check each model's specific page for tailored repair steps.