ICP Control Board for WPA4484000RKB1 — OEM 1178001 Circuit Board | Ships Today
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Overview
This genuine OEM control board (part #1178001) is the electronic brain of your ICP, Heil, or Tempstar WPA4484000RKB1 unit. It manages the control sequence — reading thermostat calls, sequencing the contactor and fan, handling timing/anti-short-cycle delays, and coordinating safeties. When a control board fails, the unit may not respond to a cooling call, short-cycle, run erratically, or throw fault codes even though every other component is healthy. Replacing a failed board with the correct OEM part restores proper sequencing and protects the compressor and motor from improper operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1178001 |
| Type | Electronic Control / Circuit Board |
| Brand | ICP / Heil / Tempstar |
| Control Voltage | 24V |
| Function | Sequencing, timing, and safety control |
Compatibility
Direct OEM fit for the ICP/Tempstar/Heil WPA4484000RKB1 unit and related ICP-family equipment using control board #1178001. Match the part number exactly, as control boards are model-specific and not interchangeable across platforms.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the unit's electrical service panel.
- Document — Photograph every wire and connector on the existing board before disconnecting.
- Remove — Unplug each harness, release the standoffs/screws, and lift out the old board.
- Install — Seat the new board on its standoffs and reconnect every connector per your photo.
- Test — Restore power, call for cooling, and verify correct startup sequence with no fault codes.
Signs You Need a Replacement
- Unit unresponsive to thermostat calls despite control power
- Persistent fault codes or blinking diagnostic LED
- Erratic operation or short-cycling
- 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