ICP 40VA Transformer for WPA4604000RKA1 — 208/230V to 24V | Ships Today

Overview

This OEM control transformer (part #1173691) steps 208/230V line power down to the 24-volt control voltage that runs your ICP WPA4604000RKA1 system's contactor, control board, and thermostat circuit. Rated at 40VA, it supplies the low-voltage power the entire control side depends on. The matching terminal barrier (part #1176148, 24V 42-60) is included to protect and organize the low-voltage connections. When a transformer fails — usually from a shorted thermostat wire or an overloaded control circuit — the system goes completely dead with no 24V present, even though line power is fine.

Specifications

Compatibility

Direct-fit OEM replacement for the ICP WPA4604000RKA1 unit and related Tempstar, Heil, and Comfortmaker equipment using this 208/230V-to-24V 40VA transformer and 24V terminal barrier. Verify the primary voltage tap matches your supply before wiring.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker; verify zero voltage with a multimeter.
2. Access — Remove the control/electrical access panel.
3. Document — Photograph the primary and secondary wire connections and the barrier layout.
4. Remove — Disconnect the primary line leads and the 24V secondary leads, then unbolt the old transformer and barrier.
5. Install — Mount the new transformer and barrier, connect the correct primary voltage tap, and reconnect the 24V leads per your photo.
6. Test — Restore power and confirm 24V across the secondary terminals with a multimeter.

Signs You Need a Replacement

• System completely dead — no response from thermostat or controls.
• No 24V reading across the secondary terminals.
• Burnt smell or visibly charred transformer windings.
• Repeated low-voltage fuse or control failures.

Shipping & Returns

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