ICP 40VA Transformer for WPG4424060LKA1 — 208/230V to 24V | Ships Today
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Overview
This genuine OEM control transformer (part number 1173691, with 24V barrier PN 1178431) steps the 208/230V line voltage down to the 24V control voltage used by the ICP/Heil/Tempstar WPG4424060LKA1 packaged unit. Rated at 40VA, it powers the thermostat, contactor coil, gas valve, control board, and other low-voltage components. When a transformer fails — usually from a short in the low-voltage circuit or simple age — the entire 24V control side goes dead and the system won't respond to the thermostat at all. The included barrier provides proper isolation and terminal protection.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1173691 (Transformer), 1178431 (24V Barrier) |
| Type | Control Transformer w/ Barrier |
| Brand | ICP / Heil / Tempstar |
| Primary Voltage | 208/230 VAC |
| Secondary Voltage | 24 VAC |
| Rating | 40 VA |
| Fits Model | WPG4424060LKA1 |
Compatibility
Direct OEM replacement for the ICP, Heil, Comfortmaker, and Tempstar WPG4424060LKA1 packaged gas/electric unit. This 208/230V-to-24V 40VA transformer is also used across comparable ICP-family systems. Verify primary voltage (208/230V), secondary (24V), and VA rating against your original before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and disconnect, then verify zero voltage with a multimeter at the transformer leads.
- Access — Remove the control panel access cover to reach the transformer.
- Document — Photograph the primary and secondary wire connections and color coding before disconnecting.
- Remove — Disconnect the primary and secondary leads, then unbolt the transformer and barrier from the panel.
- Install — Mount the new transformer and barrier, land the 208/230V leads on the primary and the 24V leads on the secondary per your photo.
- Test — Restore power and confirm 24V across the secondary, then verify the thermostat and controls respond.
Signs You Need a Replacement
- System is completely unresponsive to the thermostat with no 24V present.
- No voltage reading across the transformer secondary terminals.
- Transformer is hot, swollen, or has a burnt smell.
- Repeated blown low-voltage fuses traced back to the transformer.
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day hassle-free returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days