ICP Defrost Control Board for YK036GC2 — Heat Pump OEM | Ships Today
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Overview
This OEM defrost control board (part #34332101) is the brain of the defrost cycle on your ICP/Tempstar/Heil YK036GC2 heat pump. It monitors coil temperature and run time, then initiates and terminates the defrost mode that clears frost and ice from the outdoor coil in heating season. It also coordinates the reversing valve, compressor, and outdoor fan during defrost. When this board fails, the heat pump may ice over, fail to defrost, lock out, run the wrong mode, or stop heating entirely. Replacing it restores correct defrost timing and efficient heat pump operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 34332101 |
| Type | Defrost Control Board |
| Brand | ICP (Tempstar / Heil) |
| Control Voltage | 24V |
| Application | Heat Pump Defrost Management |
Compatibility
Direct OEM replacement for the ICP/Tempstar/Heil YK036GC2 heat pump and compatible single-stage ICP-family outdoor units that use this defrost control. Match your existing board part number and connector layout before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the control-box service panel on the condensing unit.
- Document — Photograph every wire and connector position on the old board before disconnecting.
- Remove — Unplug the wiring harnesses, release the board standoffs/screws, and remove the failed board.
- Install — Seat the new board on its standoffs and reconnect each harness exactly per your photo.
- Test — Restore power, run a heating cycle, and confirm the unit completes a normal defrost cycle.
Signs You Need a Replacement
- Outdoor coil ices over and never defrosts
- Heat pump locks out or won't switch into heating
- Reversing valve or fan behaves incorrectly during defrost
- No 24V output to compressor/fan terminals on the board
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days