Allied Furnace: EAC and HUM accessory terminals on the control board
EAC and HUM accessory terminals on the control board on a Allied furnace: The EAC terminal is a 120 V output that is energized whenever the indoor blower runs. The HUM terminal is a 120 V output that is energized in heating mode when the combustion air inducer runs. Each takes up to 1 amp; larger loads need an external relay.
Applies to: Accessory wiring on the integrated control
How to fix eac and hum accessory terminals on the control board: step by step
- Connect an accessory rated up to 1 amp directly to EAC or HUM, with its neutral on a provided neutral terminal.
- For a load above 1 amp, use an external relay and do not connect it directly to the terminal.
If the unit shows an error code, look it up: Allied Furnace codes
Source: Allied 92G1UH installation manual, p. 42. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.