ICP Furnace Control Board CEPL130438-01 for WFML090B042A1 — OEM Circuit Board | Ships Today

Overview

This OEM integrated furnace control board (part 1176943, board number CEPL130438-01) is the brain of the ICP / Tempstar / Heil WFML090B042A1 gas furnace. It manages the entire heating sequence — reading the thermostat call, energizing the inducer, proving the pressure switch, firing the hot surface igniter, opening the gas valve, monitoring flame via the sensor, and timing the blower on and off. It also runs all the built-in safety logic and flashes diagnostic fault codes through an onboard LED. When the control board fails, the furnace can behave erratically or stop working entirely: no response to the thermostat, ignition that never starts, a blower that won't run or won't shut off, or repeated lockouts with no clear mechanical cause. Boards commonly fail from power surges, heat stress, failed relays, or corroded traces. Because it sequences every other component, a faulty board is a frequent root cause when multiple symptoms appear at once.

Specifications

Compatibility

Direct OEM fit for the ICP / Tempstar / Heil WFML090B042A1 gas furnace. The CEPL130438-01 control board is used across many ICP-built WFML-series furnaces sold under the Tempstar, Heil, and Comfortmaker brands. Match both the OEM part number (1176943) and the board number (CEPL130438-01) before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, and verify zero voltage with a multimeter.
2. Access — Remove the furnace control/blower access panel.
3. Document — Photograph every wiring connection and harness plug on the old board before touching anything.
4. Remove — Unplug all connectors, remove the mounting screws, and lift out the old board.
5. Install — Mount the new CEPL130438-01 board and reconnect every harness exactly per your photo, seating each plug fully.
6. Test — Restore power, run a heat call, and watch the diagnostic LED to confirm a clean ignition and blower sequence with no fault codes.

Signs You Need a Replacement

• Furnace does not respond to the thermostat at all.
• Blower runs constantly or never starts.
• Repeated lockouts with no mechanical cause found.
• Diagnostic LED is dark or flashing a hard-fault code.

Shipping & Returns

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