E17
York · YCG42B21S 3.5 Ton 14 SEER Affinity Series Air Conditioner with Scroll Compressor
The outdoor fan is detected to be rotating at an abnormal speed or stalled, leading to overheating and reduced cooling capacity.
Error E17 on the York YCG42B21S 3.5 Ton 14 SEER Affinity Series Air Conditioner with Scroll Compressor means: Outdoor Unit Fan Speed Abnormality. The top-ranked community fix is “Replace Outdoor Fan Motor or Blade Assembly” (hard difficulty, ~90 min, DIY cost: $0). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · air conditioner
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 air conditioner repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $180-$300.
heat_pump · 2 fixes
furnace · 2 fixes
furnace · 2 fixes
furnace · 2 fixes
heat_pump · 2 fixes
heat_pump · 2 fixes
Indoor Temperature Sensor Fault
Outdoor Unit Fan Motor Failure
Refrigerant Leak Detected
Compressor Overcurrent Protection Triggered
Indoor Fan Motor Stall Detected
High Pressure Switch Triggered
Low Pressure Switch Triggered
Drain Pump Failure
The York YCG42B21S 3.5 Ton 14 SEER Affinity Series Air Conditioner with Scroll Compressor has 8 other known error codes:
Error code E17 also appears on 6 other York models:
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