ICP 40VA Transformer for WPG3362090LKB1 — 208/230V to 24V | Ships Today

Overview

This OEM control transformer (Part No. 1173691) steps the 208/230V line voltage down to 24V to power the low-voltage control circuit of the ICP/Heil/Tempstar WPG3362090LKB1 packaged unit. Rated at 40VA, it supplies the thermostat, control board, contactor coil, and gas valve. The kit includes the 24V barrier (Part No. 1176032) for proper terminal isolation. When a transformer fails — often from a shorted control wire or a stuck contactor coil drawing excess current — the entire system goes dead: no thermostat display, no cooling, and no heating. A blown 40VA transformer is a frequent cause of a completely unresponsive unit.

Specifications

Compatibility

Direct OEM replacement for the ICP/Heil/Tempstar WPG3362090LKB1 packaged gas/electric unit and related WPG3 series equipment using 40VA transformer 1173691 and barrier 1176032. Verify your part numbers before ordering.

Installation Guide

1. Safety First — Disconnect power at the unit disconnect and breaker, verify zero voltage with a multimeter.
2. Access — Remove the control/electrical service panel.
3. Document — Photograph the primary (line) and secondary (24V) wiring and barrier position before disconnecting.
4. Remove — Disconnect all leads, unbolt the transformer from its mounting, and remove it with the old barrier.
5. Install — Mount the new transformer, install the 24V barrier, and reconnect primary and secondary leads per your photo.
6. Test — Restore power and confirm 24V across the secondary terminals and a live thermostat.

Signs You Need a Replacement

• Blank thermostat with no low-voltage power
• No cooling or heating despite line voltage present
• Burnt smell or visibly charred transformer windings
• Zero volts measured across the 24V secondary

Shipping & Returns

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