ICP Transformer for WAPT364A1 — 40VA 208/230V to 24V | Ships Today

Overview

This OEM control transformer (part number 1172028) steps down the 208/230V line voltage of your ICP WAPT364A1 system to the 24V control voltage that runs the thermostat, relays, and control board. Rated at 40VA, it provides the current needed for the complete low-voltage control circuit. When the transformer fails, the control system goes dead: a blank thermostat, no blower or contactor engagement, and an unresponsive system even with live line power. Buzzing, a control fuse that keeps blowing, or a burnt smell at the control board all signal a transformer at the end of its service life.

Specifications

Compatibility

Direct OEM replacement for the ICP / Tempstar / Heil WAPT364A1. This 40VA 208/230>24V transformer is shared across many ICP-family air handlers and packaged units; verify your existing transformer's VA rating and voltage taps before installing.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring.
2. Access — Remove the service panel to expose the control box.
3. Document — Photograph all primary and secondary wire connections before disconnecting anything.
4. Remove — Disconnect the line-voltage primary leads and the 24V secondary leads, then unbolt the failed transformer.
5. Install — Mount the new transformer, land the 208/230V leads on the correct primary taps, and reconnect the 24V secondary per your photo.
6. Test — Restore power and confirm 24V across the secondary and normal control operation.

Signs You Need a Replacement

• Blank thermostat and a completely dead low-voltage control circuit.
• Repeatedly blown 3-amp or 5-amp low-voltage control fuse.
• Audible buzzing or humming from the transformer.
• Burnt smell or visible scorching at the transformer or control board.

Shipping & Returns

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