ICP 40VA Transformer for WPG4424060RKB1 — 208/230V to 24V | Ships Today

Overview

This is a genuine OEM 40VA control transformer (part number 1173691) with the matching 24V barrier (part number 1178431) for the ICP/Tempstar/Heil WPG4424060RKB1 packaged gas/electric unit. The transformer steps the unit's 208/230V line voltage down to the 24V low-voltage control circuit that powers the thermostat, control board, contactor coil, and gas valve. At 40VA it supplies the amperage needed to pull in the contactor and energize the gas valve simultaneously. When a transformer fails — usually from a shorted low-voltage wire or a stuck contactor coil — the entire control circuit goes dead and the system will not respond to a call for heat or cool.

Specifications

Compatibility

Direct OEM fit for the ICP/Tempstar/Heil/Comfortmaker WPG4424060RKB1 packaged unit. The included 24V barrier matches the original mounting so the transformer seats correctly in the control box without modification.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter before touching any wiring.
2. Access — Remove the control panel to expose the transformer and barrier.
3. Document — Photograph the primary and secondary leads before disconnecting.
4. Remove — Disconnect all leads, then unfasten the old transformer and barrier from the control box.
5. Install — Mount the new transformer and 24V barrier, then land the primary and secondary wires per your photo.
6. Test — Restore power and confirm 24V across the secondary and normal system operation.

Signs You Need a Replacement

• No 24V at the control board or thermostat
• System completely unresponsive to a call for heat or cool
• Burnt smell or visibly scorched transformer windings
• Repeated blown low-voltage fuse from an overloaded or shorted secondary

Shipping & Returns

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