ICP Transformer for WAPT364A2 — 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 WAPT364A2 system to the 24V control voltage that powers the thermostat, relays, and control board. Rated at 40VA, it delivers sufficient current for the entire low-voltage control circuit. A failed transformer kills the control system outright: a blank thermostat, no blower or contactor pull-in, and an unresponsive unit despite live line power. Buzzing, a control fuse that blows repeatedly, or a scorched smell near the control board all point to a transformer that needs replacing.

Specifications

Compatibility

Direct OEM replacement for the ICP / Tempstar / Heil WAPT364A2. 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.