ICP 40VA Transformer for WTA3362000RKA1 — 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 the 24V control voltage your low-voltage circuit needs, built for the ICP/Tempstar/Heil WTA3362000RKA1 system. The transformer is the power supply for the entire control side of the unit — the contactor coil, the thermostat, and any control board all depend on a steady 24V supply. When a transformer fails, usually from a shorted control wire, an overloaded circuit, or a power surge, the unit goes completely dead on the control side: the contactor won't pull in and nothing responds to a thermostat call. A blown transformer is a frequent culprit behind a no-cooling condenser that otherwise shows no obvious damage.

Specifications

Compatibility

Direct OEM fit for the ICP/Tempstar/Heil WTA3362000RKA1 condensing unit and many comparable ICP-family residential air conditioners and heat pumps that use 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.