ICP Control Transformer 40VA for WTA3482000RKA1 — 208/230V to 24V | Ships Today
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Overview
This OEM control transformer (part #1173691) supplies the low-voltage 24V control circuit on your ICP/Tempstar/Heil WTA3482000RKA1 system. It steps down 208/230V line power to 24V at 40VA, powering the contactor coil, thermostat, and control board. When a transformer fails — typically from a shorted secondary, overload, or age — the entire control circuit goes dead: the contactor will not pull in, the blower and compressor will not start, and the thermostat display may go blank. A 40VA Class 2 rating provides ample headroom for standard residential control loads.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1173691 |
| Type | Step-Down Control Transformer (Class 2) |
| Brand | ICP / Tempstar / Heil |
| Primary Voltage | 208/230V |
| Secondary Voltage | 24V |
| Rating | 40 VA |
| Fits Model | WTA3482000RKA1 |
Compatibility
Designed as a direct OEM replacement for the ICP/Tempstar/Heil WTA3482000RKA1 condensing unit. Also commonly used across ICP-family equipment requiring a 208/230V-to-24V 40VA control transformer. Always verify the existing transformer's primary and secondary voltage and VA rating against your unit before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the control panel access cover.
- Document — Photograph all primary and secondary wire connections before disconnecting.
- Remove — Label and disconnect the primary (line) and secondary (24V) leads, then unbolt the old transformer from the mounting bracket.
- Install — Mount the new transformer, match the primary leads to incoming line voltage and the secondary leads to the 24V circuit per your photo.
- Test — Restore power and confirm 24V across the secondary; verify the contactor energizes on a call for cooling.
Signs You Need a Replacement
- No 24V at the control board or thermostat — system completely unresponsive
- Contactor will not pull in on a cooling call
- Repeatedly blown low-voltage fuse or visible burnt/melted transformer housing
- Buzzing transformer or measured secondary voltage well below 24V
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