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This OEM transformer assembly supplies the 24V control circuit on the ICP/Heil/Tempstar WUGC080CF01 gas furnace. It converts 120V line voltage to 24V at 40VA, feeding the thermostat, gas valve, ignition control, and switching relays. The kit combines the OEM transformer-relay receptacle (part 97298, TRANS RELAY RECEP 120>25 40VA) with a 24V SPDT relay (part 92840). A failed transformer kills all low-voltage power — the thermostat goes dead, the gas valve cannot energize, and the furnace will not fire. Buzzing, overheating, or a repeatedly blown control fuse signal a transformer at the end of its life.
| Spec | Value |
|---|---|
| OEM Part Numbers | 92840 (Relay 24V SPDT), 97298 (Transformer Relay Receptacle) |
| Type | Control Transformer w/ Relay |
| Brand | ICP / Heil / Tempstar |
| Rating | 40 VA |
| Primary Voltage | 120V |
| Secondary Voltage | 24V |
| Relay | 24V SPDT |
A direct OEM replacement for the ICP/Heil/Tempstar WUGC080CF01 gas furnace and related platform models using the 40VA 120V-to-24V control transformer. Verify your model number prior to ordering.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.