ICP Transformer for WAXM244A1 — 208/230V to 24V 40VA Control Transformer | Ships Today

Overview

This is a genuine OEM 40VA control transformer (part number 1172028) for the ICP WAXM244A1 air handler. It steps the 208/230V line voltage down to the 24V low-voltage power that runs the thermostat, control board, relays, and contactor coil. The 40VA rating defines the continuous low-voltage load it can carry. When a control transformer fails, the whole 24V circuit goes dead and the system stops responding to the thermostat even with line power present — commonly caused by a shorted thermostat wire, a stuck contactor, or age. A burnt smell, an open internal fuse link, or zero secondary volts confirm the failure. The correct OEM replacement restores dependable 24V control power.

Specifications

Compatibility

Factory control transformer for the ICP WAXM244A1 air handler and matching Heil, Tempstar, and Comfortmaker units on the WAXM244 platform. Verify the 208/230V primary and 40VA rating on your existing transformer before ordering.

Installation Guide

1. Safety First — Disconnect power at the breaker and unit disconnect, then verify zero voltage with a multimeter.
2. Access — Remove the air handler control compartment service panel.
3. Document — Photograph all primary and secondary wire connections before disconnecting.
4. Remove — Label and disconnect the primary and secondary leads, then unbolt the failed transformer.
5. Install — Mount the new transformer, match the 208/230V primary taps, and reconnect the 24V secondary per your photos.
6. Test — Restore power and confirm 24V across the secondary and normal thermostat response.

Signs You Need a Replacement

• System completely unresponsive to the thermostat with line power present
• No 24V reading across the secondary terminals
• Burnt smell or scorched transformer housing
• Contactor or relays will not energize on a call

Shipping & Returns

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