ICP Fan Coil Control Board for WAHM302A1 — OEM Replacement | Ships Today
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Overview
This OEM fan coil control board (part number 1172975) is the main low-voltage control module for your ICP WAHM302A1 air handler. The board interprets thermostat calls, sequences the ECM blower, manages electric heat staging, and routes 24V power throughout the unit. When a control board fails the symptoms are often intermittent and confusing — the blower may not start, auxiliary heat may not engage, the system may short-cycle, or it may stop responding to the thermostat entirely. Burnt relays, scorched traces, blown onboard fuses, or heat damage around the terminals are clear indicators the board has failed and needs replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1172975 |
| Type | Fan Coil Control Board |
| Brand | ICP (Tempstar / Heil) |
| Function | Blower / Heat Staging / 24V Control |
| Control Voltage | 24 VAC |
| Application | Indoor Air Handler / Fan Coil |
| Fitment | OEM Direct Replacement |
Compatibility
Direct OEM replacement for the ICP WAHM302A1 air handler. As ICP manufactures the Tempstar, Heil, Comfortmaker, and Arcoaire brands, this fan coil control board also services comparable WAHM-series fan coils built on the same control platform. Confirm part number 1172975 and connector layout against your existing board before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching the board.
- Access — Remove the air handler control-compartment service panel.
- Document — Photograph every harness, thermostat wire, and plug connected to the board before disconnecting.
- Remove — Unplug all connectors and thermostat leads, then unscrew or unclip the board from its standoffs.
- Install — Mount the new board on the standoffs and reconnect each harness and thermostat wire exactly per your photos.
- Test — Restore power and verify the blower, heat staging, and thermostat response all operate normally.
Signs You Need a Replacement
- Blower or electric heat will not energize on a thermostat call.
- System short-cycles or ignores the thermostat intermittently.
- Visible burnt relays, scorched traces, or a blown onboard fuse.
- No 24V output to the blower or heat circuits despite good incoming control power.
Shipping & Returns
Ships same day on orders placed 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