ICP Control Board for WPA4244000RKA1 — OEM Circuit Board | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
This is a genuine OEM circuit board (part number 1178001) for the ICP WPA4244000RKA1 system. The control board is the brain of the unit — it manages the start-up sequence, timing and anti-short-cycle delays, safety interlocks, fan and compressor relays, and fault diagnostics. It reads the 24V call from the thermostat and energizes the contactor, blower, and other outputs in the correct order. When a control board fails, the system may not respond to the thermostat at all, may run erratically, may lock out on a fault code, or may leave the blower or compressor running continuously. Boards typically fail from power surges, lightning, corrosion, overheated relay contacts, or failed onboard components.
Specifications
| Spec | Value |
|---|---|
| OEM Part Number | 1178001 |
| Description | Circuit Board |
| Type | Control / Logic Board |
| Brand | ICP |
| Control Voltage | 24V |
| Fits Model | WPA4244000RKA1 |
| Fitment | OEM Direct Replacement |
Compatibility
This circuit board is the factory-specified replacement for the ICP WPA4244000RKA1 and its Tempstar, Heil, and Comfortmaker equivalents. The same board services related ICP WPA-series units — always match the part number 1178001 and the board's connector layout and relay configuration to your original before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage at the board with a multimeter.
- Access — Remove the control-box service panel to expose the circuit board.
- Document — Photograph every plug, harness, and individual wire location on the board before disconnecting.
- Remove — Unplug the harness connectors, release the board standoffs or screws, and lift the old board out.
- Install — Seat the new board on the standoffs, then reconnect every connector and wire exactly as shown in your photo.
- Test — Restore power, send a call from the thermostat, and confirm the correct start-up sequence with no fault codes.
Signs You Need a Replacement
- System does not respond to thermostat calls
- Persistent fault code or hard lockout that returns after reset
- Blower or compressor runs continuously or cycles erratically
- Visible burn marks, corrosion, or swollen components 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