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This OEM control transformer (PN 1173691) for the ICP/Tempstar/Heil WPG3244060RKC1 steps 208/230V line power down to 24V and supplies 40VA to the low-voltage control circuit that powers the thermostat, contactor coil, gas valve, and control board. The kit includes the matching 24V barrier (PN 1178431) that isolates and protects the low-voltage terminals. When a transformer fails — usually from a shorted secondary, an overloaded control circuit, or age — the entire 24V system goes dead: no thermostat display, no contactor pull-in, and no ignition. A blown transformer often points to a downstream short, so inspect the control wiring before energizing the replacement.
| Spec | Value |
|---|---|
| Part Number (Transformer) | 1173691 |
| Part Number (Barrier) | 1178431 |
| Type | Control Transformer |
| Brand | ICP / Tempstar / Heil |
| Primary Voltage | 208/230 V |
| Secondary Voltage | 24 V |
| Rating | 40 VA |
Direct-fit OEM replacement for the ICP/Tempstar/Heil WPG3244060RKC1 packaged unit and Heil-family systems specifying a 40VA, 208/230V-to-24V control transformer with 24V barrier.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.