ICP Control Board for WAHM604A1 — OEM Fan Coil Control Board | Ships Today

Overview

This OEM ICP fan coil control board (part #1172975) is the main logic board for the ICP/Tempstar/Heil WAHM604A1 air handler. It governs blower operation, electric heat staging, and the thermostat and safety inputs that tie the system together. A failed board typically presents as a blower that will not run, electric heat that will not energize, no response to a thermostat call, or visible scorching and failed relays on the board.

Specifications

Compatibility

Direct OEM fit for the ICP/Tempstar/Heil WAHM604A1 fan coil air handler. Verify the printed part number on your existing board matches 1172975 before installing.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter.
2. Access — Remove the air handler service panel.
3. Document — Photograph every wire and connector position on the board before disconnecting.
4. Remove — Label and disconnect all leads, then unscrew the board from its standoffs.
5. Install — Mount the new board and reconnect each wire exactly per your photo.
6. Test — Restore power and verify the blower and heat respond to a thermostat call.

Signs You Need a Replacement

• No blower or no electric heat on a thermostat call
• Visible burn marks, swollen relays, or a burnt smell on the board
• System unresponsive or behaving erratically
• Blown low-voltage fuse that recurs after replacement

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.