ICP Control Board for WPA4244000RKB1 — OEM Circuit Board | Ships Today
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Overview
This is the genuine OEM control circuit board (part number 1178001) for the ICP WPA4244000RKB1 unit. The control board is the brain of the system — it receives the 24V call from the thermostat, manages compressor and fan sequencing, enforces anti-short-cycle timing, and coordinates safety interlocks and defrost or fault logic. When the board fails from a power surge, a failed relay, corrosion, or burned traces, the unit can stop responding to the thermostat, short-cycle, lock out on a fault, or behave erratically. Installing a new OEM board restores correct timing, switching, and safety protection so the system runs as designed.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1178001 |
| Type | Control Circuit Board |
| Brand | ICP (Heil / Tempstar / Comfortmaker) |
| Control Voltage | 24V |
| Function | Sequencing, timing, and safety control |
| Fitment | OEM Replacement |
Compatibility
A direct OEM replacement for the ICP WPA4244000RKB1. ICP produces equipment under the Heil, Tempstar, and Comfortmaker labels, so this control board services matching units across that family. Match the printed board part number to your existing board before installing, since board revisions can differ between model runs.
Installation Guide
- Safety First — Disconnect all power at the breaker and disconnect, then verify zero voltage at the board with a multimeter.
- Access — Remove the service panel to expose the control board.
- Document — Photograph every wire and connector position on the board before disconnecting anything.
- Remove — Unplug the harnesses and low-voltage leads, then unscrew or unclip the board from its standoffs.
- Install — Mount the new board on the standoffs and reconnect every harness exactly per your photo.
- Test — Restore power, run a cooling call, and confirm proper sequencing with no fault codes.
Signs You Need a Replacement
- Unit does not respond to thermostat calls despite good 24V power
- Short-cycling or incorrect compressor and fan timing
- Repeated lockouts or blinking fault codes on the board LED
- Visible burn marks, corrosion, or a fried relay 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