ICP 40VA Transformer for WPG3424060RKC1 — 208/230V to 24V | Ships Today

Overview

This OEM 40VA control transformer (part number 1173691, with terminal barrier 1178431) supplies the 24-volt control power for the ICP Tempstar Heil WPG3424060RKC1 packaged unit. It steps the 208/230V line voltage down to the 24VAC that drives the control board, contactor coil, gas valve, and thermostat circuit. When a transformer fails — usually from an overloaded or shorted low-voltage circuit — the entire control system goes dead: no thermostat display, no contactor pull-in, and no ignition sequence. A common failure mode is an internal open or a tripped/blown winding after a shorted 24V wire.

Specifications

Compatibility

Direct-fit OEM replacement for the ICP Tempstar Heil WPG3424060RKC1. This 208/230V-to-24V 40VA transformer is shared across many ICP-family packaged and split units (Comfortmaker, Heil, Tempstar, Arcoaire); verify the primary tap voltage and part number against the original.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker; verify zero voltage with a multimeter.
2. Access — Remove the control/electrical service panel.
3. Document — Photograph every primary and secondary lead and note the 208 vs 230 tap in use.
4. Remove — Disconnect the leads, then unbolt the transformer from its mounting bracket.
5. Install — Mount the new transformer, install the 24V barrier, and reconnect each lead exactly per your photo, matching the correct primary tap.
6. Test — Restore power and confirm 24VAC at the secondary and normal control operation.

Signs You Need a Replacement

• No 24V control power — dead thermostat and no system response
• Contactor and gas valve will not energize on a call
• Measured 0V at the transformer secondary with line voltage present
• Burnt smell, discolored windings, or a hot/buzzing transformer

Shipping & Returns

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