ICP Transformer for WCH3482GKA1 — 40VA 24V Class II | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
This OEM 24-volt control transformer (referenced parts #1172574 / #1175622) supplies the low-voltage power that runs the control circuit of your ICP/Heil/Tempstar WCH3482GKA1 heat pump. It steps the incoming line voltage down to 24 VAC to energize the contactor coil, reversing-valve solenoid, and control board. Rated at 40VA with a 24V secondary, it delivers the steady low-voltage supply the entire control circuit depends on. When the transformer fails the whole 24V circuit goes dead: the thermostat can go blank, the contactor won't pull in, and the unit won't respond to a call for heating or cooling. Transformers commonly fail from a shorted secondary wire, a stuck contactor drawing excess current, or age and accumulated heat stress.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1172574, 1175622 |
| Type | Class II Step-Down Control Transformer |
| Brand | ICP / Heil / Tempstar / Comfortmaker |
| Rating | 40 VA |
| Secondary Voltage | 24 VAC |
| Fitment | OEM Replacement |
Compatibility
Direct OEM replacement for the ICP/Heil/Tempstar WCH3482GKA1 heat pump. Compatible across many ICP-family condensing units and heat pumps sharing the same 24V control circuit. Confirm the primary voltage and part number on your existing transformer before ordering.
Installation Guide
- Safety First — Disconnect power at the breaker and disconnect; verify zero voltage with a multimeter.
- Access — Remove the unit's electrical access panel.
- Document — Photograph all primary and secondary wire connections.
- Remove — Label and disconnect the line-voltage primary and 24V secondary leads; unmount the failed transformer.
- Install — Mount the new transformer and reconnect each lead per your photo, matching primary to line voltage.
- Test — Restore power and confirm 24 VAC across the secondary and that the control circuit energizes.
Signs You Need a Replacement
- Blank thermostat or dead control circuit with line power present.
- No 24 VAC reading across the transformer secondary.
- Burned smell or visibly scorched transformer body.
- Repeatedly blown low-voltage fuse or tripped control circuit.
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day hassle-free 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