ICP 40VA Transformer for WPG3364060RKC1 – 208/230V to 24V | Ships Today

Overview

This is a genuine OEM control transformer (part number 1173691, 40VA 208/230V to 24V) with the matching 24V barrier (part number 1178431) for the ICP Tempstar Heil WPG3364060RKC1 packaged gas unit. The transformer is the heart of the low-voltage control circuit – it steps the incoming 208/230V line voltage down to the 24V required by the thermostat, control board, gas valve, contactor coil, and safety switches. Its 40VA rating provides enough power to energize all of those low-voltage loads simultaneously. When a transformer fails – typically from a shorted control wire, a stuck contactor coil, or simple age – the entire 24V system goes dead. Symptoms include a blank or unresponsive thermostat, a furnace that will not respond to any call, and no clicking from the control relays. The included barrier protects and isolates the 24V terminals.

Specifications

Compatibility

Direct-fit OEM replacement for the ICP Tempstar Heil WPG3364060RKC1 packaged gas unit. The 40VA 208/230-to-24V transformer is used widely across the ICP Tempstar, Heil, Comfortmaker, and Arcoaire WPG platform. Confirm your existing transformer is rated 40VA with a 208/230V primary before installing.

Installation Guide

1. Safety First – Disconnect power at the unit disconnect and verify zero voltage with a multimeter before opening any panel.
2. Access – Remove the control/blower service panel to expose the transformer and barrier.
3. Document – Photograph every primary and secondary lead and terminal before disconnecting.
4. Remove – Label and disconnect the primary (line) and secondary (24V) leads, then unbolt the transformer and barrier from the panel.
5. Install – Mount the new 1173691 transformer and 1178431 barrier, then reconnect the primary and secondary leads exactly per your photo.
6. Test – Restore power and confirm 24V across the secondary, a responsive thermostat, and normal ignition.

Signs You Need a Replacement

• Blank or dead thermostat with line power present
• No 24V output measured across the secondary terminals
• Furnace completely unresponsive to a heat or cool call
• Burnt smell or visible scorching on the transformer body

Shipping & Returns

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