ICP 40VA Transformer for WFAR060B048B2 — 120V to 24V Furnace Control | Ships Today

Overview

This genuine OEM 40VA control transformer (part number 1177217) steps the 120-volt line supply down to the 24-volt control voltage used by your ICP/Tempstar/Heil WFAR060B048B2 furnace. It powers the control board, thermostat circuit, gas valve, and low-voltage relays. When a transformer fails — usually from a shorted thermostat wire, a stuck contactor, or simple age — the furnace goes completely dead with no display, no blower, and no call-for-heat response. Replacing it with the correct 40VA unit restores reliable low-voltage power to the entire control system.

Specifications

Compatibility

Engineered for the ICP/Tempstar/Heil WFAR060B048B2 gas furnace and other ICP-family models specifying a 40VA, 120V-to-24V control transformer. Verify your primary supply is 120V 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/blower service panel.
3. Document — Photograph all primary (line) and secondary (24V) wire connections before disconnecting.
4. Remove — Disconnect the leads, remove the transformer mounting screws, and lift it out.
5. Install — Mount the new transformer, reconnect the 120V primary and 24V secondary leads exactly per your photo.
6. Test — Restore power, confirm 24VAC at the secondary, and verify the furnace responds to a call for heat.

Signs You Need a Replacement

• Furnace completely dead — no control board display or thermostat power
• No 24VAC measured at the secondary terminals
• Blown low-voltage fuse that recurs after reset
• Burnt smell or visibly scorched transformer housing

Shipping & Returns

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