ICP 24V Transformer for WCH3364GKA1 — 40VA Control Power | Ships Today
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Overview
This OEM 24-volt control transformer supplies the low-voltage power that runs the control circuit on your ICP Tempstar Heil WCH3364GKA1 heat pump. It steps line voltage down to a stable 24V to energize the contactor coil, reversing valve solenoid (parts 1172574 / 1175621), and thermostat circuit. Rated at 40VA, it provides the steady control current the system needs to switch reliably between heating and cooling. When a transformer fails — open winding, shorted turns, or a tripped internal fuse — the entire 24V control side goes dead: the thermostat blanks, the contactor never pulls in, and the outdoor unit will not respond to a call.
Specifications
| Spec | Value |
|---|---|
| OEM Part Numbers | 1172574 (Coil Rev Vlv 24V), 1175621 (Valve Rev w/Coil 24V) |
| Type | 24V Step-Down Control Transformer |
| Brand | ICP / Tempstar / Heil / Comfortmaker |
| Secondary Voltage | 24V |
| Rating | 40VA |
| Fitment | OEM Replacement |
Compatibility
Direct OEM low-voltage control replacement for the ICP/Tempstar/Heil/Comfortmaker WCH3364GKA1 heat pump. Confirm your existing component's secondary voltage (24V) and VA rating before installing, and match the wiring leads to your unit's control schematic.
Installation Guide
- Safety First — Disconnect power at the unit disconnect and main breaker. Verify zero voltage with a multimeter on both the line and 24V sides.
- Access — Remove the unit's electrical access panel.
- Document — Photograph all primary and secondary leads before disconnecting.
- Remove — Disconnect the line-voltage primary and 24V secondary leads, then unmount the old component.
- Install — Mount the new part and reconnect each lead exactly per your photo, keeping line and low-voltage sides separate.
- Test — Restore power, confirm 24V at the secondary with a meter, and verify the contactor and reversing valve energize on a call.
Signs You Need a Replacement
- Dead or blank thermostat with no 24V control power
- Contactor never pulls in despite a valid call
- Reversing valve fails to shift between heat and cool
- Burned smell or visibly scorched windings at the control component
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