ICP Transformer for WJA348000KTP0A2 — 40VA 208/230V to 24V | Ships Today

Overview

This OEM control transformer (Part No. 1173691) steps 208/230V line voltage down to the 24V control voltage that powers the contactor coil, thermostat circuit, and low-voltage controls in your ICP WJA348000KTP0A2 system. Rated at 40VA, it supplies the steady low-voltage power required for safe operation, and this listing includes the matching 24V barrier component (Part No. 1176032). When the transformer fails, the entire 24V control circuit goes dead — the thermostat loses power, the contactor won't energize, and the unit won't respond to a cooling call. Loud buzzing, excessive heat, or scorch marks indicate a transformer nearing failure.

Specifications

Compatibility

Direct OEM replacement for the ICP WJA348000KTP0A2 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 operation.

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 at the transformer.
• Visible scorch marks or a burnt smell.

Shipping & Returns

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