ICP 24V Transformer for WCH3304GKB1 — 40VA Control | Ships Today

Overview

This OEM 24-volt control transformer provides the low-voltage power that operates the ICP WCH3304GKB1 heat pump's control circuit (associated OEM parts #1172574 and #1175621). It steps incoming line voltage down to a steady 24 VAC at about 40VA, feeding the contactor coil, defrost control board, reversing-valve coil, and thermostat. Every low-voltage device in the system relies on this transformer. When it fails — typically from a shorted secondary, an overloaded control circuit, or simple age — the unit becomes totally unresponsive: no contactor pull-in, a dead thermostat, and no 24V present at the board. A burnt smell or a bulged, discolored case confirms the failure. It's a low-cost part whose failure disables the entire system, so replacing it is a quick, high-impact repair.

Specifications

Compatibility

Direct OEM fit for the ICP/Tempstar/Heil WCH3304GKB1 heat pump and matching ICP-family units using a 24V/40VA control transformer. Always confirm primary and secondary voltage and VA rating against your existing transformer before installing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and verify zero voltage with a multimeter.
2. Access — Remove the condenser service/control panel.
3. Document — Photograph the primary and secondary lead connections.
4. Remove — Disconnect leads, unbolt the transformer from its bracket, and remove it.
5. Install — Mount the new transformer and reconnect primary and secondary leads exactly per your photo.
6. Test — Restore power and confirm 24 VAC at the secondary and proper control-circuit operation.

Signs You Need a Replacement

• No 24V control power anywhere in the system
• Contactor won't pull in and thermostat is dead
• Burnt smell or visibly bulged/discolored transformer
• Recurring blown low-voltage fuse

Shipping & Returns

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