Tempstar 40VA Transformer for TXH560GKA100 — 24V | Ships Today
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Overview
This is the genuine OEM 24V control transformer for the Tempstar TXH560GKA100 heat pump, supplying the 24-volt low-voltage power that runs the control board, contactor, reversing valve coil, and thermostat circuit. Related OEM components on this 24V circuit include the reversing-valve coil (part 1172574) and the reversing valve with coil (part 1175622). When the transformer fails, the entire low-voltage control system goes dead — the thermostat loses power, the contactor won't pull in, and the unit won't start in any mode. A blown transformer is frequently caused by a shorted control wire or a failed 24V coil, so inspect the load side before installing the new part.
Specifications
| Spec | Value |
|---|---|
| OEM Parts | 1172574 (Coil Rev Vlv 24V), 1175622 (Valve Rev w/Coil 24V) |
| Type | Control Transformer |
| Brand | Tempstar (ICP / Heil) |
| Secondary Voltage | 24V |
| Rating | 40 VA |
| Fits Model | TXH560GKA100 |
| Fitment | OEM direct replacement |
Compatibility
This 24V / 40VA control transformer is a direct OEM fit for the Tempstar TXH560GKA100 and equivalent ICP/Heil/Comfortmaker heat-pump units on the same control platform. Confirm primary line voltage and the 24V secondary rating against your existing transformer before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter at the transformer terminals.
- Access — Remove the control-panel cover to expose the transformer and low-voltage terminal block.
- Document — Photograph the primary and secondary lead positions before disconnecting.
- Remove — Disconnect the primary and 24V secondary leads, then unbolt the failed transformer from its bracket.
- Install — Mount the new transformer, reconnect primary and secondary leads exactly per your photos, and check the 24V coil circuit for shorts before energizing.
- Test — Restore power, measure 24V across the secondary, and confirm the contactor and reversing valve coil energize on a thermostat call.
Signs You Need a Replacement
- No 24V at the thermostat or control board — system completely dead.
- Contactor and reversing valve coil won't energize on a call.
- Transformer is hot, swollen, smells burnt, or has an open winding.
- Repeated low-voltage fuse blows after a shorted control wire or coil.
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