ICP 40VA Transformer for WPG4484130LKB1 – 208/230V to 24V | Ships Today

Overview

This OEM control transformer (part number 1173691) is the factory step-down transformer for the ICP/Tempstar/Heil WPG4484130LKB1, shipped with its matching 24V barrier (part number 1178431). It converts the 208/230V line supply down to the 24V control voltage that powers the thermostat, gas valve, contactor coil, and control board. Rated at 40VA, it provides the steady low-voltage power the entire control circuit depends on. A failed transformer leaves the unit completely dead at the thermostat, blows the low-voltage fuse, or causes intermittent control dropouts under load.

Specifications

Compatibility

Direct OEM replacement for the ICP / Tempstar / Heil WPG4484130LKB1 packaged unit. Verify primary voltage and VA rating against the original transformer before installing.

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 to reach the transformer.
3. Document – Photograph the primary and secondary lead connections before disconnecting.
4. Remove – Disconnect the leads and unbolt the old transformer and barrier from the panel.
5. Install – Mount the new transformer with the 24V barrier and reconnect primary/secondary leads per your photo.
6. Test – Restore power and confirm 24V at the secondary and normal thermostat operation.

Signs You Need a Replacement

• No power at the thermostat or control board
• Repeatedly blown low-voltage fuse
• Buzzing, overheated, or burnt-smelling transformer
• Intermittent control circuit dropouts

Shipping & Returns

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