ICP 40VA Transformer for WPG3244040LKC1 — 208/230V to 24V | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
This genuine OEM control transformer (part #1173691) with its companion 24V barrier (part #1178431) supplies the low-voltage control power for the ICP/Tempstar/Heil WPG3244040LKC1 packaged gas/electric unit. The transformer steps line voltage of 208/230V down to 24V and delivers 40VA of capacity to run the thermostat, control board, contactor coil, gas valve, and relays. The included 24V barrier protects and isolates the low-voltage wiring connections. When the transformer fails — usually from a shorted control circuit or age — the entire low-voltage system goes dead: no thermostat response, no contactor pull-in, and no heating or cooling operation.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1173691 (Transformer), 1178431 (24V Barrier) |
| Type | Step-Down Control Transformer |
| Brand | ICP / Tempstar / Heil |
| Primary Voltage | 208/230V |
| Secondary Voltage | 24V |
| Rating | 40 VA |
| Fitment | OEM |
Compatibility
Direct factory replacement for the ICP WPG3244040LKC1 packaged unit and used in matching 208/230V to 24V, 40VA control circuits across the Tempstar, Heil, and Comfortmaker product families. Confirm the primary/secondary voltage and the 40VA rating against your existing transformer before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and unit disconnect, then verify zero voltage with a multimeter.
- Access — Remove the control-compartment service panel.
- Document — Photograph the primary (line) and secondary (24V) leads and barrier connections.
- Remove — Disconnect the leads, unscrew the transformer from its mounting bracket, and detach the barrier.
- Install — Mount the new transformer and barrier, match the primary taps to your line voltage, and reconnect each lead per your photo.
- Test — Restore power and confirm 24V across the secondary and normal thermostat, contactor, and ignition operation.
Signs You Need a Replacement
- Completely dead thermostat and no low-voltage control power
- No 24V reading across the secondary terminals
- Repeatedly blown low-voltage fuse or shorted control circuit
- Burning smell or visibly overheated transformer body
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