ICP Defrost Control Board for WCH5364GKA200 — Heat Pump Demand Defrost | Ships Today
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Overview
This OEM defrost control board (part #1173636) governs the defrost cycle on your ICP / Tempstar / Heil heat pump model WCH5364GKA200. It tracks outdoor coil temperature and accumulated run time, then sequences the reversing valve, compressor, and outdoor fan to melt frost off the coil in heating mode. A failed board commonly leaves the coil iced over and starved for airflow, or traps the system in a repeating defrost loop that drives up energy use and dumps cold air indoors. The board's logic and relays run on a 24V control circuit.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1173636 |
| Type | Defrost Control Board |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Function | Time/Temperature Defrost |
| Fitment | OEM Replacement |
Compatibility
Built for ICP-family heat pump model WCH5364GKA200 and related Tempstar, Heil, and Comfortmaker condensing units that specify board #1173636. Match your current board's part number before ordering.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter.
- Access — Remove the outdoor unit's control-panel access cover.
- Document — Photograph every wire and connector before disconnecting.
- Remove — Unplug each harness, release the board standoffs, and lift out the old board.
- Install — Seat the new board on the standoffs and reconnect each plug per your photo.
- Test — Restore power and verify normal heating and defrost operation.
Signs You Need a Replacement
- Outdoor coil freezes over and won't clear
- Continuous defrost or cold air blowing during heat calls
- Reversing valve or fan won't switch on defrost
- No 24V output to defrost relays
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. 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