ICP Transformer for WPG4364060RKA1 — 40VA 208/230V to 24V | Ships Today
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Overview
This is the OEM 40VA control transformer for the ICP (Tempstar / Heil / Comfortmaker) WPG4364060RKA1 packaged unit. It steps the incoming 208/230V line voltage down to the 24V required by the unit's contactor coil, control board, igniter circuit, and thermostat. The kit includes the OEM terminal barrier (P/N 1178431) and the 40VA transformer (P/N 1173691). When a transformer fails, the entire low-voltage control circuit goes dead — the thermostat screen may blank, the contactor will not pull in, and the system will not start a heating or cooling cycle. A burnt-smelling or visibly bulged transformer is a clear sign of failure, usually caused by a shorted 24V wire or a stuck contactor drawing excess current.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1173691 (transformer), 1178431 (barrier) |
| Type | Control Transformer |
| Brand | ICP |
| Rating | 40 VA |
| Primary Voltage | 208/230 VAC |
| Secondary Voltage | 24 VAC |
| Includes | Terminal barrier |
Compatibility
Direct OEM fit for the ICP WPG4364060RKA1 packaged unit and other Tempstar, Heil, and Comfortmaker models that share this 208/230V-to-24V 40VA transformer. Always confirm primary/secondary voltage and VA rating against the unit's wiring diagram before installing.
Installation Guide
- Safety First — Disconnect power at the unit disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the control/electrical access panel.
- Document — Photo all primary and secondary wires before disconnecting.
- Remove — Disconnect the line-voltage primary leads and the 24V secondary leads, then unbolt the failed transformer from its bracket.
- Install — Mount the new transformer and barrier, then reconnect primary and secondary leads exactly per your photo.
- Test — Restore power and confirm 24V across the secondary terminals and normal system start-up.
Signs You Need a Replacement
- Blank thermostat and completely dead low-voltage controls
- Contactor will not energize even with a call for cooling
- No 24V output measured across the secondary terminals
- Burnt smell, discoloration, or bulging on the 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