ICP Transformer 40VA for WFAR080B048C1 — 120/24V | Ships Today

Overview

This OEM 40VA control transformer (part #1177217) steps down 120V line voltage to the 24V control voltage that powers the thermostat, gas valve, igniter circuit, and control board on your ICP WFAR080B048C1 furnace. When the transformer fails, the entire low-voltage control system loses power: the thermostat may go blank, the furnace ignores a call for heat, and you'll often find a blown control-board fuse or a scorched smell at the transformer windings. Rated at 40VA, this unit delivers stable, ample 24V control current for the furnace's loads.

Specifications

Compatibility

Directly fits the ICP / Tempstar / Heil WFAR080B048C1 gas furnace. This 40VA transformer is a common control component across many ICP-family furnaces and air handlers — always confirm the original VA rating and voltage taps before installing.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the furnace control/blower compartment service panel.
3. Document — Photograph all primary and secondary wire connections before disconnecting.
4. Remove — Disconnect the 120V primary and 24V secondary leads, then unbolt the transformer from its bracket.
5. Install — Mount the new transformer and reconnect line and control wiring exactly per your photo, matching the correct voltage tap.
6. Test — Restore power and verify 24V at the secondary and a normal heat cycle.

Signs You Need a Replacement

• Blank or dead thermostat with no 24V control power
• Repeatedly blown control-board fuse
• Furnace won't start on a call for heat
• Buzzing, overheating, or a burnt smell at the transformer

Shipping & Returns

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