ICP Transformer for WJA360000K000A1 — 40VA 208/230V to 24V | Ships Today

Overview

This OEM control transformer (Part No. 1173691) steps line voltage of 208/230V down to the 24V control voltage that powers the contactor coil, thermostat circuit, and low-voltage controls in your ICP WJA360000K000A1 system. Rated at 40VA, it provides the steady low-voltage power the unit needs to operate safely. This listing also includes the matching 24V barrier component (Part No. 1176032). When a transformer fails, the entire 24V control circuit goes dead — the thermostat loses power, the contactor won't pull in, and the system simply won't respond to a cooling call. A transformer that buzzes loudly, runs hot, or shows scorch marks is on its way out.

Specifications

Compatibility

Direct OEM replacement for the ICP WJA360000K000A1 unit. Compatible across Tempstar, Heil, and Comfortmaker equipment specifying a 40VA 208/230V-to-24V control transformer. Confirm your primary voltage and VA rating before ordering.

Installation Guide

1. Safety First — Disconnect power at the breaker and disconnect, then verify zero voltage with a multimeter.
2. Access — Remove the unit's electrical service panel.
3. Document — Photograph the primary and secondary wiring before disconnecting.
4. Remove — Disconnect the primary and 24V secondary leads and unbolt the old transformer from its bracket.
5. Install — Mount the new transformer, install the barrier, and reconnect primary and secondary leads per your photo.
6. Test — Restore power and confirm 24V across the secondary terminals and normal system response.

Signs You Need a Replacement

• No 24V at the thermostat or control board.
• Contactor won't pull in on a cooling call.
• Audible buzzing or excessive heat from the transformer.
• Visible scorch marks or burnt smell at the transformer.

Shipping & Returns

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