ICP Transformer for WPA4244000RKA1 — 40VA 208/230V to 24V | Ships Today
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Overview
This is a genuine OEM 40VA control transformer (part number 1173691) with its mounting barrier/terminal block (part number 1176144) for the ICP WPA4244000RKA1 system. The transformer steps the incoming 208/230V line voltage down to the 24V low-voltage power that runs the thermostat, control board, contactor coil, and other control circuits. At 40VA it supplies roughly 1.66 amps on the secondary — enough headroom for typical accessory loads. When a transformer fails, the entire low-voltage control system goes dead: the thermostat screen is blank, the contactor will not pull in, and nothing energizes even though line power is present. Transformers commonly fail from a shorted thermostat wire, a stuck contactor coil drawing excess current, or a power surge.
Specifications
| Spec | Value |
|---|---|
| OEM Part Numbers | 1173691 (transformer), 1176144 (barrier/terminal) |
| Type | Step-Down Control Transformer |
| Brand | ICP |
| Rating | 40 VA |
| Primary Voltage | 208/230V |
| Secondary Voltage | 24V |
| Fits Model | WPA4244000RKA1 |
| Fitment | OEM Direct Replacement |
Compatibility
This 40VA 208/230V-to-24V transformer is the factory replacement for the ICP WPA4244000RKA1 and its Tempstar, Heil, and Comfortmaker equivalents. The same VA rating and voltage configuration is used across many ICP WPA-series condensers and air handlers — verify the primary voltage, secondary voltage, VA rating, and mounting style against your original before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage at the transformer leads with a multimeter.
- Access — Remove the control-box service panel to reach the transformer and barrier.
- Document — Photograph the primary (line) and secondary (24V) wiring before disconnecting.
- Remove — Label and disconnect all leads, then unbolt the transformer and barrier from the control panel.
- Install — Mount the new transformer and barrier, wire the primary taps for your supply voltage (208 or 230), and reconnect the 24V secondary per your photo.
- Test — Restore power and confirm 24V at the secondary terminals and that the thermostat and contactor energize.
Signs You Need a Replacement
- No 24V control power — blank thermostat and dead control board
- System will not start even though line voltage is present
- Repeatedly blown low-voltage fuse on the control board
- Burnt smell or visible scorching at the transformer windings
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