ICP 40VA Transformer 208/230V to 24V for WPA4604000RKB1 — OEM 1173691 | Ships Today

Overview

This OEM 40VA control transformer (OEM part 1173691) steps the incoming 208/230-volt line voltage down to the 24-volt control voltage your ICP/Tempstar/Heil WPA4604000RKB1 system needs to run the thermostat, contactor coil, control board, and other low-voltage components. This listing also covers the matching 24V terminal barrier/strip (OEM part 1176148) used on this assembly. When a transformer fails, the entire low-voltage control circuit goes dead — symptoms include a blank thermostat, an outdoor unit that won't energize, no response on a call for cooling or heating, and a burnt-smelling or visibly overheated transformer, often caused by a shorted control wire.

Specifications

Compatibility

Direct OEM fit for the ICP/Tempstar/Heil WPA4604000RKB1 packaged unit and related ICP-family equipment using a 40VA, 208/230-to-24V control transformer. Verify your primary and secondary voltages and VA rating before installing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control-compartment service panel.
3. Document — Photograph the primary and secondary wire connections before disconnecting.
4. Remove — Disconnect the primary (line) and secondary (24V) leads and unbolt the old transformer.
5. Install — Mount the new transformer and barrier, then reconnect each lead to the matching terminal per your photo.
6. Test — Restore power and confirm 24V output at the secondary and a powered control circuit.

Signs You Need a Replacement

• Thermostat is blank and the control circuit is dead.
• No 24V reading at the transformer secondary.
• Transformer is hot, buzzing, or smells burnt.
• System won't respond to a call for heating or cooling.

Shipping & Returns

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