ICP 40VA Transformer for WAPM364A2 — 208/230V to 24V Primary | Ships Today

Overview

This OEM 40VA control transformer (part number 1172028) supplies the low-voltage power for your ICP WAPM364A2 air handler. It steps down 208/230V line voltage to the 24V control voltage that runs the thermostat, blower control board, and contactor coil. Its 40VA rating provides enough current to operate the control circuit reliably without overheating. A failed transformer kills the entire low-voltage system — the thermostat goes dark, the blower won't start, and no heating or cooling call is answered. Typical failure causes are shorted secondary wiring, a seized contactor coil overloading the transformer, or age-related winding breakdown.

Specifications

Compatibility

A direct OEM replacement for the ICP WAPM364A2 air handler. ICP equipment is also sold under the Tempstar, Heil, Comfortmaker, and Arcoaire labels, so this transformer fits equivalent models across those brand families that specify part 1172028.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage at the unit with a multimeter before touching wiring.
2. Access — Remove the service panel to expose the control compartment.
3. Document — Photograph all primary and secondary wire connections before disconnecting.
4. Remove — Unscrew the transformer bracket, then disconnect the primary (line) and secondary (24V) leads.
5. Install — Mount the new transformer, reconnect leads per your photo, and confirm the primary tap matches your supply voltage.
6. Test — Restore power and verify 24V across the secondary and that the control system energizes.

Signs You Need a Replacement

• Blank thermostat or no control power
• No response to heating or cooling calls
• Blower and contactor fail to energize
• Burnt smell or visible scorching on the transformer

Shipping & Returns

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