ICP 40VA Transformer for WPG4244060RKA1 — 208/230V to 24V OEM | Ships Today

Overview

This OEM control transformer kit (part number 1173691 with terminal barrier 1178431) steps 208/230V line voltage down to 24V to power the low-voltage controls on ICP WPG4244060RKA1 packaged units — the thermostat circuit, contactor coil, gas valve, and control board all depend on it. Rated at 40VA, it supplies the steady 24V the system needs to operate. A failed transformer leaves the unit completely dead on a call for heat or cool: no contactor pull-in, no display, and no 24V at the R and C terminals. Transformers commonly fail from a shorted thermostat wire, a stuck contactor drawing excess current, or simple age. Replacing it with the correct 40VA OEM unit restores full control power.

Specifications

Compatibility

Direct OEM fit for ICP / Tempstar / Heil model WPG4244060RKA1 packaged units. Verify your primary tap (208V vs 230V) and confirm part numbers 1173691 and 1178431 before ordering.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before servicing.
2. Access — Remove the control compartment service panel.
3. Document — Photograph all primary and secondary wire connections before disconnecting.
4. Remove — Disconnect the leads, unbolt the old transformer and barrier from the mounting bracket.
5. Install — Mount the new 40VA transformer and 24V barrier, connect the correct primary tap (208 or 230), and reconnect the 24V secondary per your photo.
6. Test — Restore power and verify 24V across the secondary and proper contactor and control operation.

Signs You Need a Replacement

• No 24V at the R and C control terminals
• Contactor will not pull in on a call
• Repeated blown low-voltage fuse
• Burnt smell or visibly scorched transformer windings

Shipping & Returns

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