ICP 40VA Transformer for WFSR080C060A2 — 120/24V | Ships Today

Overview

This genuine OEM control transformer (part number 1177217) supplies the low-voltage power for the ICP/Tempstar/Heil WFSR080C060A2 furnace. It converts the 120V line voltage to the 24V required by the control board, thermostat, gas valve, and ignition system. Rated at 40VA, it delivers enough current for the full furnace control circuit. A failed transformer — typically caused by a shorted thermostat wire, a failing gas valve coil, or age-related winding breakdown — kills all 24V power: the thermostat goes blank and the furnace ignores any call for heat. Installing a correct 40VA, 120-to-24V transformer restores control power and normal operation.

Specifications

Compatibility

Factory transformer for the ICP/Tempstar/Heil WFSR080C060A2 and many ICP-family gas furnaces using a 120V primary control circuit. Confirm your primary supply is 120V (not 208/240V) 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 control-compartment service panel.
3. Document — Photograph all primary and secondary connections before disconnecting.
4. Remove — Disconnect the leads, remove the mounting screws, and take out the failed transformer.
5. Install — Mount the new transformer and reconnect 120V to the primary and 24V to the secondary exactly per your photo.
6. Test — Restore power, confirm 24V at the secondary, and verify a normal call for heat.

Signs You Need a Replacement

• Thermostat display is blank or dead
• No 24V at the control board with line power present
• Furnace does not respond to a call for heat
• Burnt smell or scorched transformer windings

Shipping & Returns

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