ICP Transformer for WAHT244B1 — 208/230V to 24V 40VA | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
This OEM control transformer (part 1172028) steps your incoming 208/230V line voltage down to the 24V control voltage that powers the thermostat, relays, and control board in your ICP WAHT244B1 air handler. Rated at 40VA, it delivers enough power to drive the low-voltage circuit without overheating. When a transformer fails, the symptoms are unmistakable: a completely dead thermostat, no response from the air handler, a tripped or open fuse on the control board, or a faint burning smell from an overloaded coil. A buzzing or visibly scorched transformer is a sure sign of failure and should be replaced before it damages downstream components.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1172028 |
| Type | Step-Down Control Transformer |
| Brand | ICP (Tempstar / Heil) |
| Primary Voltage | 208/230V |
| Secondary Voltage | 24V |
| Rating | 40VA |
| Fitment | OEM Replacement |
Compatibility
Designed as a direct OEM replacement for the ICP WAHT244B1 air handler and other ICP, Tempstar, Heil, and Comfortmaker fan coil units that use the 1172028 transformer. Always confirm your existing transformer carries the same VA rating and voltage configuration before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage at the unit with a multimeter.
- Access — Remove the air handler service panel to expose the control compartment.
- Document — Photograph the primary and secondary wiring before disconnecting anything.
- Remove — Label and disconnect the line-voltage primary leads and the 24V secondary leads, then unbolt the failed transformer from the mounting bracket.
- Install — Mount the new transformer, matching the 208/230V taps to your incoming line voltage, and reconnect the secondary leads per your photo.
- Test — Restore power and verify 24V across the secondary terminals and normal thermostat operation.
Signs You Need a Replacement
- Thermostat is completely dead with no display or response.
- Repeated blown low-voltage fuses on the control board.
- Audible buzzing or humming from the transformer.
- Visible scorching, melted insulation, or a burnt odor.
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. 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