ICP 40VA Transformer 120/208/240V to 24V for PGMB038N100 & PGMB038F125 — Ships Today

Overview

The ICP 54385 is an OEM 40VA control transformer that converts incoming line voltage (120/208/240V) to the 24V low-voltage power that drives the control board, gas valve, contactor coil, and thermostat on PGMB038 series package units. The transformer is the foundation of the entire control circuit — when it opens or shorts, the unit loses all 24V power and will not respond to a call for heating or cooling. The most common failure mode is a shorted secondary from a grounded low-voltage wire, which overheats and burns out the windings. A correctly rated 40VA OEM replacement restores reliable control-voltage power.

Specifications

Compatibility

Direct OEM replacement for ICP package units PGMB038N100 and PGMB038F125. Verify your primary voltage tap and VA rating before installing.

Installation Guide

1. Safety First — Disconnect power at the unit disconnect and verify zero voltage with a multimeter.
2. Access — Remove the control access panel on the package unit.
3. Document — Photograph all primary and secondary leads before disconnecting.
4. Remove — Disconnect the leads, remove the mounting hardware, and pull the old transformer. Check the low-voltage wiring for shorts before energizing the replacement.
5. Install — Mount the new transformer, land the primary on the matching voltage tap, and reconnect the 24V secondary per your photo.
6. Test — Restore power, confirm 24V at the secondary, and verify the controls energize on a call.

Signs You Need a Replacement

• Unit completely unresponsive with no 24V control power
• Repeatedly blown low-voltage fuse
• Overheated or discolored transformer body
• Zero voltage reading at the secondary terminals

Shipping & Returns

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