ICP 24V Transformer for WPH4424000RKA1 — 40VA Control Power | Ships Today
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Overview
This OEM 24V control transformer supplies the low-voltage power that runs the control circuit on your ICP / Tempstar / Heil WPH4424000RKA1 heat pump — including the 24V reversing-valve coil (PN 1172619) and barrier/terminal circuit (PN 1176148). It steps line voltage down to 24 volts at 40VA to energize the thermostat, contactor coil, defrost board, and reversing valve solenoid. When the transformer fails, the entire control system goes dead: no thermostat display, no contactor pull-in, and no heat-pump changeover. It's a small part that takes the whole unit offline when it burns out.
Specifications
| Spec | Value |
|---|---|
| Related Part Numbers | 1176148 (Barrier 24V), 1172619 (Rev. Valve Coil 24V) |
| Type | Step-Down Control Transformer |
| Brand | ICP (Tempstar / Heil / Comfortmaker) |
| Secondary Voltage | 24V |
| Rating | 40 VA |
| Fits Model | WPH4424000RKA1 |
Compatibility
Built for the ICP/Tempstar/Heil WPH4424000RKA1 packaged heat pump control circuit and compatible with the same 24V/40VA control architecture used across ICP-family WPH-series equipment. Confirm primary voltage (line side) and mounting before installing.
Installation Guide
- Safety First — Disconnect power and verify zero voltage with a multimeter.
- Access — Remove the control-box service panel.
- Document — Photograph the primary (line) and secondary (24V) leads before disconnecting.
- Remove — Disconnect the leads and unbolt the transformer from its bracket.
- Install — Mount the new transformer and reconnect primary and secondary wiring per your photo.
- Test — Restore power and confirm 24V across the secondary terminals with a meter.
Signs You Need a Replacement
- Blank thermostat with no 24V control power.
- Contactor and reversing valve won't energize.
- Repeatedly blown low-voltage fuse or burnt transformer smell.
- No measurable 24V on the secondary side.
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