ICP 40VA Transformer for WTA3302000RKA1 — 208/230V to 24V | Ships Today

Overview

This OEM ICP transformer (part number 1173691) is a 40VA step-down transformer that converts 208/230V line voltage down to 24V control voltage, built for the ICP/Tempstar/Heil WTA3302000RKA1 system. The transformer powers the entire low-voltage control circuit — the contactor coil, the thermostat, and any control board rely on its steady 24V output. Transformers fail from shorted control wiring, overloaded circuits, or power surges, and when one goes the unit dies on the control side: the contactor won't pull in and nothing answers a thermostat call. A blown transformer is one of the most common reasons a condenser stops cooling while showing no other obvious damage.

Specifications

Compatibility

Direct OEM fit for the ICP/Tempstar/Heil WTA3302000RKA1 system and many comparable ICP-family residential air conditioners and heat pumps using a 40VA, 208/230V-to-24V control transformer. Confirm the part number (1173691) and primary/secondary voltage before installing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter before touching any wiring.
2. Access — Remove the unit's electrical access/service panel.
3. Document — Photograph the primary (line) and secondary (24V) wire connections before disconnecting.
4. Remove — Disconnect the primary and secondary leads, then unbolt the transformer from its mounting location.
5. Install — Mount the new transformer, reconnect the 208/230V primary and 24V secondary leads exactly per your photo, and secure all connections.
6. Test — Restore power and verify 24V across the secondary, then confirm the control circuit and contactor energize on a cooling call.

Signs You Need a Replacement

• No 24V control voltage — contactor won't pull in and the unit is dead on a thermostat call.
• Thermostat screen blank or unresponsive (on 24V-powered stats).
• Burnt smell, discolored housing, or visibly charred transformer windings.
• Repeatedly blown low-voltage fuse traced back to a failing transformer.

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day hassle-free returns. Backed by the National HVAC Parts fitment guarantee.