ICP Transformer for WAPL364A4 — 208/230V to 24V 40VA | Ships Today

Overview

This OEM control transformer (part #1172028) steps down 208/230V line voltage to 24V control voltage with a 40VA rating, powering the low-voltage control circuit in your ICP WAPL364A4 system. The transformer feeds the thermostat, relays, contactor coil, and control board. When it fails, the entire 24V control circuit goes dead — the unit will not start even though line power is present. Common failure causes include a shorted secondary, voltage spikes, or an overloaded control circuit that burns the windings.

Specifications

Compatibility

Directly fits the ICP / Heil / Tempstar WAPL364A4 and other units in the WAPL364 family using a 208/230V to 24V 40VA control transformer. Always confirm the OEM part number on the existing transformer before ordering.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter.
2. Access — Remove the control panel service cover.
3. Document — Photograph all primary and secondary wire connections before disconnecting.
4. Remove — Disconnect the leads, then unscrew the transformer from the mounting bracket.
5. Install — Mount the new transformer and reconnect the primary and secondary leads per your photo.
6. Test — Restore power and confirm 24V across the secondary terminals.

Signs You Need a Replacement

• No 24V at the thermostat or control board
• Unit completely unresponsive with line power present
• Burnt smell or visible scorching on the transformer body
• Repeatedly blown low-voltage fuse or control circuit

Shipping & Returns

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