ICP Transformer for WFAR060B048B1 — 40VA 120/24V | Ships Today
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Overview
This OEM 40VA control transformer (part #1177217) is the power supply backbone of your ICP Tempstar Heil WFAR060B048B1 gas furnace. It steps the incoming 120V line voltage down to the 24V control voltage that operates the thermostat, gas valve, igniter circuit, control board, and blower relays. Rated at 40VA, it delivers enough current to drive the full low-voltage control system simultaneously. When a transformer fails, the entire low-voltage side of the furnace goes dead — the thermostat screen blanks out, the system won't respond to a heat call, and no 24V appears at the control board terminals. Transformers typically fail from a shorted gas valve, a pinched thermostat wire, or a seized blower drawing excess current that overheats the windings.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1177217 |
| Type | Step-Down Control Transformer |
| Brand | ICP (Tempstar / Heil) |
| Rating | 40 VA |
| Primary Voltage | 120V |
| Secondary Voltage | 24V |
| Fitment | OEM Direct Replacement |
Compatibility
Engineered as the factory replacement for the ICP Tempstar Heil WFAR060B048B1 furnace and shared across many ICP family gas furnaces and air handlers using a 120/24V 40VA control transformer. Always confirm your existing transformer's primary and secondary voltage match before installing.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the furnace control/blower compartment service panel.
- Document — Photograph all primary (line) and secondary (24V) wire connections before disconnecting.
- Remove — Disconnect the lead wires, unbolt the transformer from its mounting bracket, and lift it out.
- Install — Mount the new transformer, reconnect the 120V primary and 24V secondary leads exactly per your photo.
- Test — Restore power, confirm 24V across the secondary terminals, and verify the furnace responds to a heat call.
Signs You Need a Replacement
- Thermostat display is blank with no batteries-only power
- No 24V reading at the control board with line voltage present
- Furnace completely unresponsive to heat or fan calls
- Visible scorching, swelling, or a burnt smell at the transformer
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