ICP 40VA Transformer for WPG3242040LKB1 — 208/230 to 24V | Ships Today

Overview

This OEM 40VA control transformer (P/N 1173691, with terminal barrier P/N 1176032) supplies the 24-volt control power for the ICP/Tempstar/Heil WPG3242040LKB1 packaged unit. It steps the incoming 208/230V line voltage down to the 24V that the thermostat, control board, contactor coil, and gas valve all rely on. Rated at 40VA, it provides enough capacity to drive every low-voltage accessory on the call. When a transformer fails — usually from a shorted control wire or an overloaded circuit — the entire low-voltage system goes dead: no thermostat display, no contactor pull-in, no ignition. Installing the correct OEM transformer with its barrier restores reliable 24V control power.

Specifications

Compatibility

Direct-fit replacement for the ICP, Tempstar, Heil, and Comfortmaker WPG3242040LKB1 packaged gas/electric unit. Confirm the primary tap (208 vs 230V) and VA rating match your existing transformer before wiring.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter on both primary and secondary leads.
2. Access — Remove the service panel to reach the control compartment.
3. Document — Photograph the primary and secondary wiring and the barrier orientation before disconnecting.
4. Remove — Disconnect the leads, unscrew the transformer mount, and remove it with the old barrier.
5. Install — Mount the new transformer and barrier, then reconnect primary to line and secondary to the 24V control circuit per your photo.
6. Test — Restore power and confirm 24V output and normal control operation.

Signs You Need a Replacement

• No 24V control power — thermostat is blank
• Contactor or gas valve will not energize on a call
• Repeated blown low-voltage fuse or burnt transformer smell
• Measured secondary output well below 24V

Shipping & Returns

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