ICP 40VA Transformer for WPG4244060RKB1 — 208/230V to 24V | Ships Today

Overview

This is a genuine OEM 40VA control transformer (part number 1173691) with its matching 24V barrier (part number 1178431) for the ICP/Tempstar/Heil WPG4244060RKB1 packaged unit. The transformer steps the 208/230V line voltage down to the 24V used by the thermostat, control board, contactor coil, and gas valve. When it fails, the entire low-voltage control circuit goes dead — no thermostat display, no contactor pull-in, and no call for cooling or heating. A transformer typically fails from an overloaded or shorted secondary, age, or a power surge, and often shows a burnt smell or visibly swollen housing.

Specifications

Compatibility

Direct-fit OEM replacement for the ICP WPG4244060RKB1 packaged gas/electric unit and related Tempstar, Heil, and Comfortmaker systems using a 40VA 208/230-to-24V control transformer. Confirm primary and secondary voltages and the 40VA rating before installing.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter on both line and low-voltage sides.
2. Access — Remove the electrical/control access panel.
3. Document — Photograph all primary and secondary leads before disconnecting.
4. Remove — Disconnect the wire leads and unbolt the transformer from the panel.
5. Install — Mount the new transformer and barrier, then reconnect primary to 208/230V and secondary to the 24V circuit per your photo.
6. Test — Restore power and confirm 24V across the secondary and normal thermostat/contactor operation.

Signs You Need a Replacement

• Blank thermostat with line voltage present at the unit
• No 24V reading across the secondary terminals
• Contactor or gas valve will not energize on a call
• Burnt smell or melted/swollen transformer housing

Shipping & Returns

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