ICP Transformer for WFAR100C060A1 — 40VA 120/24V | Ships Today
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Overview
This is a genuine OEM 40VA control transformer (part number 1177217) for the ICP / Tempstar / Heil WFAR100C060A1 gas furnace. The transformer converts 120-volt line power down to the 24-volt control voltage that powers the thermostat, gas valve, ignition control, and relays. If the transformer fails, the entire low-voltage control circuit goes dead and the furnace will not respond. Common failure symptoms include a blank thermostat, a furnace that won't start, a buzzing or overheating transformer, repeatedly blown low-voltage fuses, or visibly burned windings.
Specifications
| Spec | Value |
|---|---|
| OEM Part Number | 1177217 |
| Type | Step-down control transformer |
| Brand | ICP (Tempstar / Heil / Comfortmaker) |
| Rating | 40 VA |
| Primary Voltage | 120 VAC |
| Secondary Voltage | 24 VAC |
| Fitment | OEM direct replacement |
Compatibility
Engineered as a direct OEM replacement for the ICP WFAR100C060A1 furnace and shared across many ICP-family models sold under the Tempstar, Heil, Comfortmaker, Arcoaire, KeepRite and Day & Night brands. Confirm your existing transformer is rated 40VA with a 120V primary and 24V secondary before ordering.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter at the transformer primary leads.
- Access — Remove the furnace blower-compartment service panel to expose the control area.
- Document — Photograph all primary (line) and secondary (24V) wire connections before disconnecting anything.
- Remove — Disconnect the line-voltage and 24V leads, then unbolt the failed transformer from its mounting bracket.
- Install — Mount the new transformer, then reconnect the primary and secondary leads exactly per your photo.
- Test — Restore power, confirm 24 VAC across the secondary terminals with a multimeter, and verify the thermostat and furnace respond.
Signs You Need a Replacement
- Thermostat display is blank and the furnace will not power on
- No 24 VAC measured across the secondary terminals
- Transformer buzzes loudly, runs extremely hot, or smells burnt
- Repeated blown control fuses or tripped low-voltage circuit
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