ICP Transformer for WPG3242040RKB1 — 40VA 208/230V to 24V | Ships Today
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Overview
This OEM control transformer (part 1173691) steps the incoming 208/230V line voltage down to the 24V low-voltage power that runs the thermostat, gas valve, ignition control, and relays in your ICP WPG3242040RKB1 unit. Rated at 40VA, it supplies enough current for the full 24V control circuit. The kit also includes the OEM 24V barrier (part 1176032) that isolates and protects the low-voltage terminals. When a control transformer fails, the entire low-voltage side goes dead — no thermostat display, no call for heat or cool, and no relay or contactor pull-in — even though line voltage is present at the unit.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1173691 (transformer), 1176032 (24V barrier) |
| Type | Control / Class 2 Transformer |
| Brand | ICP (Heil / Tempstar / Comfortmaker) |
| Primary Voltage | 208/230V |
| Secondary Voltage | 24V |
| Rating | 40VA |
| Fit | OEM Replacement |
Compatibility
Engineered as the direct OEM replacement for the control transformer in the ICP WPG3242040RKB1 package unit, sold under the Heil, Tempstar, and Comfortmaker labels. Always confirm primary and secondary voltage and VA rating against the unit's wiring diagram before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and disconnect, then verify zero voltage at the transformer primary with a multimeter.
- Access — Remove the control-panel service panel to reach the transformer.
- Document — Photograph all primary and secondary wires before disconnecting.
- Remove — Label and disconnect the leads, then unbolt the failed transformer and any old barrier from the mounting bracket.
- Install — Mount the new transformer and 24V barrier, then reconnect the primary and secondary leads exactly per your photo.
- Test — Restore power and confirm 24V across the secondary terminals and a normal call for heat/cool.
Signs You Need a Replacement
- No power to the thermostat or control board with line voltage present
- Contactors and relays will not pull in
- Measured secondary voltage is 0V or well below 24V
- Visible burn marks, melted housing, or a tripping low-voltage fuse
Shipping & Returns
Ships same day before 3 PM CST. 30-day 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