ICP Fan Coil Control Board for WAHT364A1 — OEM 1172975 | Ships Today
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Overview
This OEM ICP fan coil control board (part number 1172975) is the brain of your WAHT364A1 air handler. It manages blower operation, sequences heating and cooling calls from the thermostat, controls the relays that power the indoor blower motor, and coordinates electric heat staging where equipped. When this board fails, the air handler may stop responding to thermostat demands entirely, run the blower continuously, fail to energize on a call, or behave erratically. Common failure signs include scorched or pitted relay contacts, blown onboard fuses, and visible burn marks on the PCB. Replacing the board with the correct OEM part restores reliable, code-compliant operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1172975 |
| Type | Fan Coil / Air Handler Control Board |
| Brand | ICP (Tempstar / Heil / Comfortmaker) |
| Function | Blower & heat sequencing control |
| Fitment | OEM direct replacement |
Compatibility
Engineered as the factory replacement for the ICP / Tempstar / Heil WAHT364A1 air handler. ICP shares this platform across its private-label brands, so this board also fits equivalent Comfortmaker and Heil fan coil units built on the same chassis. Always confirm the printed part number 1172975 against your existing board before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage at the board with a multimeter before touching any wiring.
- Access — Remove the air handler service panel to expose the control board.
- Document — Photograph every wire and connector position before disconnecting anything.
- Remove — Unplug the wiring harnesses and low-voltage leads, then remove the board mounting screws or standoffs and lift the old board out.
- Install — Mount the new board on the same standoffs and reconnect each wire exactly as photographed.
- Test — Restore power and verify the blower energizes on a thermostat call for heat and cool.
Signs You Need a Replacement
- Blower will not start on a thermostat call, or runs constantly and won't shut off
- Visible burn marks, melted relays, or a burnt-electronics smell on the board
- Blown onboard fuse that keeps failing after replacement
- Erratic or no response to heating/cooling demands
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