Trane Furnace Fan Limit Control

This control also provides a safety limit that turns off the burner or furnace if temperatures at the furnace are too high.

Trane furnace fan limit control.

The high temp limit switches usually have a manual reset button that needs to be pressed to reset. This article series explains how to install wire test set or repair the fan limit control switch used on heating furnaces the same blower that may be used for both heating and cooling. This video will help you to diagnose and replace a faulty limit control on your gas furnace. The swt01259 limit switch is used on many trane and american standard furnaces.

The specifications on the furnace limit switch are thermal limit open 190 f close 160 deg f. Press ctrl f to find model number below if you have any questions call 734 326 3900 for further information. This is used so that cold air is not blown into a house waiting for the gas flames to heat up enough before the blower turns on. This means that this limit switch opens and cuts off the gas burners when the temperature inside the furnace heat exchanger reaches 190 f and closes back to allow the burners to come back on when the heat exchanger reaches a temperature of 160 degrees f.

Furnace fan limit safety control q a set 5. I would try a reset it may have been a fluke that it tripped if the reset dosent trip again it is probably fine. Switch fan and limit l4064b2236 29631 145031 honeywell heyco ub 875 temperature control fits trane and american standard models.