ICP Fan Coil Control Board for WAHM242A1 — OEM Replacement | Ships Today

Overview

This OEM fan coil control board (part number 1172975) is the main circuit board that manages the ICP WAHM242A1 air handler. It interprets thermostat calls, sequences the blower and any electric heat stages, manages timing and safety interlocks, and supplies the X-13 ECM motor with its control signal. When the board fails, you may see no blower response on a fan or heat call, erratic or random operation, blown control fuses, or visible burn marks and scorched relays on the board itself. A failed board is a common cause of a system that has 24V control power present but still won't run the blower.

Specifications

Compatibility

Direct-fit replacement for the ICP / Tempstar / Heil WAHM242A1 air handler. This fan coil board is shared across related ICP-family air handler models, but always match OEM part number 1172975 to the board in your unit before ordering.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching the control box.
2. Access — Remove the electrical access panel to expose the control board.
3. Document — Photograph every connector, harness plug, and screw terminal before disconnecting anything.
4. Remove — Unplug all connectors, remove the mounting screws or standoffs, and lift the old board out.
5. Install — Mount the new board, transfer every wire and plug to the matching terminal per your photo, and confirm seating.
6. Test — Restore power and verify the blower responds correctly to fan and heat calls.

Signs You Need a Replacement

• No blower response despite 24V control power being present
• Erratic, random, or short-cycling system behavior
• Visible burn marks, scorched relays, or a burnt smell on the board
• Repeatedly blown control fuses traced back to the board

Shipping & Returns

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