Heil Gas Furnace - Inducer Motor Won't Start

Heil Gas Furnace: NTGM, GNK, NCGM, GCK

Re: Inducer Fan Won't Start / Vent Motor Won't Start

The inducer / vent motor on this furnace is controlled by the Fan Timer Board.

CHECKOUT

1. Check Power
   • Check for 24VAC between "R" and "C" on the Fan Timer Board.
     • No Power --> Check Blower Door Switch and High Voltage Power to Furnace
       • High Voltage but no Low Voltage -->Check fuse and transformer.
   • Set thermostat to call for Heat
   • Check 24VAC between "W" and "C" on the terminal block.
     • No Power = No Heat Call, Check Thermostat
     • Power present but Inducer Not Running = Bad Inducer or Bad Fan Timer Board
2. Check Inducer Power
   • Check for 120V power between D1 and Neutral on the Fan Timer Board
     • Power but No Inducer = Bad Inducer Motor / Capacitor or Item Lodged in Inducer