ICP Fan Coil Control Board for WAHM484A1 — OEM 1172975 | Ships Today
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Overview
The ICP OEM Fan Coil Control Board (part number 1172975) is the central logic module for the WAHM484A1 air handler. It manages blower operation, interprets thermostat demand, sequences the indoor fan with heating and cooling calls, and protects the system through onboard relays and diagnostics. When this board fails you may see a completely dead air handler, a blower that never starts or never stops, intermittent operation, or no response to the thermostat. Because the board coordinates every electrical function of the fan coil, a faulty board often mimics other failures — replacing it with the correct factory part restores reliable, code-compliant operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1172975 |
| Type | Fan Coil Control Board |
| Brand | ICP (Tempstar / Heil) |
| Fit | OEM |
| Application | Air Handler / Fan Coil |
| Designed For | WAHM484A1 |
Compatibility
This control board is the factory replacement for the ICP/Tempstar/Heil WAHM484A1 fan coil air handler and related WAHM-series units that originally shipped with board 1172975. Always confirm the printed part number on your existing board before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before opening the unit.
- Access — Remove the air handler service/blower panel to expose the control box.
- Document — Photograph every wire and connector position on the existing board before disconnecting anything.
- Remove — Unplug the harness connectors, release the board mounting standoffs or screws, and lift out the old board.
- Install — Seat the new 1172975 board on the standoffs and reconnect each harness exactly as photographed.
- Test — Restore power, run a heat and cool call, and confirm proper blower sequencing and diagnostics.
Signs You Need a Replacement
- Air handler is completely unresponsive to the thermostat.
- Blower will not start, or runs continuously and won't shut off.
- Intermittent operation, random resets, or error codes on the board LED.
- Visible scorching, burnt relays, or corrosion 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