#CNET TOMIGHTY CRACKED#
#CNET TOMIGHTY CRACK#

The Pressure Switch senses the drop in pressure (caused by the Induced Draft Motor).

It tells the control board the pressure dropped.

The Pressure Switch is a safety mechanism.It ensures the furnace’s exhaust is being removed to the flue even before the burners are ignited. The Burners’ Igniter begins to heat up until it’s glowing orange.The Gas Valve releases gas to the burners once the igniter is ready.They don’t receive a message from the board to ignite, rather they ignite as gas is released to them. The Flame Sensor senses the flame and tells the control board that a flame exists.If the Flame Sensor does not sense a flame, it tells the control board.The board turns off the gas valve and shuts the furnace down. If the flame sensor doesn’t detect a flame - it’s typically because the sensor is dirty.The Flame Sensor is a safety mechanism.It ensures a flame is burning while gas is being released. Video Shows Furnace Burners Light For 3 Seconds And Go Off. This is because the flame sensor’s dirty & doesn’t detect a flame, so the control board shuts the gas off. The (Flame) Rollout Switch monitors the burner’s flames to check that flames don’t extend beyond where they’re supposed to be.If a Rollout switch senses an irregular or oversized flame, it notifies the control board. The control board turns the gas off, and shuts the furnace down. Flame Rollout Switches are a safety mechanism.If flames were allowed to burn outside that area, they would likely cause a furnace fire.Ĭlick On The White Arrow In Center Of Image To See An Example Of Flame Rollout They cause the furnace to shut down if they sense flames are outside the correct area. You Can See Flame Rollout In The Image Above. The Flames should be only large enough to fit through the holes in front of the burners.

#CNET TOMIGHTY CRACKED#

NOTE: Oftentimes, owners discover they have a cracked heat-exchanger during a “no heat” service call.

#CNET TOMIGHTY CRACK#

Their furnace shut down because air (coming through the crack in the heat exchanger) was blowing flames outside their designated area. The rollout switches sent a message to the control board, and it shut the furnace down.

The Limit Switch tells the control board the furnace is warm enough to turn the blower fan on.

It also monitors if the furnace is getting too hot.

It it’s too hot, the limit switch tells the control board.

Cnet tomighty