ICP 24V Transformer for WPH4244000RKA1 — 40VA Control | Ships Today
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Overview
This is a genuine OEM 24V control transformer assembly for the ICP/Tempstar/Heil WPH4244000RKA1 packaged heat pump, supplying the low-voltage power that drives the 24V control circuit — including the reversing-valve coil (part #1172619), the reversing valve with coil (#1173708), and the 24-36V terminal barrier (#1176144). The transformer steps line voltage down to 24V so the thermostat, control board, contactor coil, and reversing valve solenoid can operate. When it fails, the entire low-voltage circuit goes dead: no thermostat display, no compressor or fan operation, and no changeover between heating and cooling. Common failure symptoms include a tripped or blown control fuse, a buzzing transformer, a burnt smell, or zero reading at the 24V terminals.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1176144, 1172619, 1173708 |
| Type | 24V Control Transformer / Coil Assembly |
| Brand | ICP / Tempstar / Heil |
| Secondary Voltage | 24V |
| Rating | 40VA Control |
| Fits Model | WPH4244000RKA1 |
Compatibility
OEM replacement for the ICP WPH4244000RKA1 packaged heat pump and related Tempstar, Heil, and Comfortmaker heat pumps using the 24V control circuit components 1176144, 1172619, and 1173708. Verify primary voltage and secondary VA rating before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter at the transformer leads.
- Access — Remove the control-compartment service panel.
- Document — Photograph the primary and secondary wiring and the reversing-valve coil connections.
- Remove — Disconnect the leads, unbolt the transformer or coil from its mount, and set the old part aside.
- Install — Mount the new component and reconnect each wire to the matching terminal per your photo.
- Test — Restore power, confirm 24V at the secondary, and verify heating/cooling changeover operates.
Signs You Need a Replacement
- No thermostat display and no low-voltage power at the controls.
- Repeatedly blown or tripped control fuse.
- System won't switch between heating and cooling (reversing valve not energizing).
- Audible buzzing or a burnt smell from the transformer.
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. 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