ICP 40VA Transformer for WTA3242000RKA1 — 208/230V to 24V | Ships Today
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Overview
This genuine OEM control transformer (part 1173691) steps 208/230V line voltage down to the 24V required by the thermostat, contactor coils, relays, and control board in your ICP Tempstar Heil WTA3242000RKA1 system. Rated at 40VA, it supplies enough current to drive the full low-voltage control circuit. Transformers fail from overload, a shorted secondary, age, or a 24V wiring short that overheats the windings. When the transformer is dead, the entire control side loses power — the thermostat goes blank, contactors will not pull in, and the system will not run even though high-voltage power is present. Installing the correct 40VA OEM transformer restores stable 24V control power.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1173691 |
| Type | Step-Down Control Transformer |
| Brand | ICP (Tempstar / Heil) |
| Rating | 40 VA |
| Primary Voltage | 208/230V |
| Secondary Voltage | 24V |
| Fits Model | WTA3242000RKA1 |
| Fitment | OEM Exact Replacement |
Compatibility
Direct factory replacement for the 40VA 208/230V-to-24V transformer in the ICP Tempstar Heil WTA3242000RKA1 and related ICP-family equipment using the same control voltage. Confirm part number 1173691, the 40VA rating, and the 208/230V primary tap before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage at the primary leads with a multimeter.
- Access — Remove the control-compartment service panel.
- Document — Photograph the primary (line) and secondary (24V) lead connections before disconnecting.
- Remove — Disconnect the leads, unbolt the transformer from its bracket, and remove it.
- Install — Mount the new transformer, connect the matching 208/230V primary tap, and reconnect the 24V secondary as photographed.
- Test — Restore power and confirm 24V at the secondary and normal thermostat and control operation.
Signs You Need a Replacement
- Blank thermostat with high-voltage power present.
- No 24V control power; contactors and relays will not energize.
- Burnt smell or visibly scorched transformer windings.
- Repeatedly blown low-voltage fuse traced to the transformer.
Shipping & Returns
Ships same day on orders placed 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