ICP 40VA Transformer for RHX036K0XA0AAA — 24V Control Output | Ships Today
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Overview
This OEM 40VA control transformer (part numbers 1172619 and 1175367) supplies the 24-volt low-voltage power that runs the control circuit of the ICP RHX036K0XA0AAA heat pump. It steps line voltage down to 24V to energize the contactor coil, reversing-valve solenoid, defrost board, and thermostat circuit. Rated at 40VA, it provides enough capacity to pull in multiple loads simultaneously without sagging. When a transformer fails — usually from a shorted thermostat wire, a stuck contactor coil, or a power surge — the entire control circuit goes dead: the thermostat screen may go blank, the contactor will not pull in, and the system simply will not respond to a call. A burnt-out transformer often has a scorched smell or a popped internal fuse link.
Specifications
| Spec | Value |
|---|---|
| OEM Part Numbers | 1172619, 1175367 |
| Type | Control Transformer |
| Brand | ICP / Tempstar / Heil / Comfortmaker |
| Rating | 40 VA |
| Secondary Voltage | 24V |
| Application | Heat Pump Control Circuit |
Compatibility
A direct OEM replacement for the ICP RHX036K0XA0AAA heat pump and the related Tempstar, Heil, and Comfortmaker units that use this 40VA 24V control transformer. Confirm the part number and secondary voltage stamped on your existing transformer 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 cover to reach the transformer.
- Document — Photograph the primary (line) and secondary (24V) wiring before disconnecting.
- Remove — Disconnect all leads and unbolt the failed transformer from its bracket.
- Install — Mount the new transformer and reconnect the primary and secondary wires per your photo.
- Test — Restore power and confirm 24V across the secondary terminals and normal system operation.
Signs You Need a Replacement
- Thermostat is blank and the system is completely unresponsive.
- No 24V measured across the secondary terminals.
- Burnt smell or discoloration on the transformer body.
- Repeated control-fuse blowing after a wiring short is corrected.
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