About the Honeywell L4029E1011 Fixed 135 F Limit Control
Honeywell L4029E1011 Fixed 135 F Limit Control. The L4029E Reset Limit Control opens a line or low voltage circuit if the air temperature reaches a critical level. L4029E acts as a fire thermostat in the ducts of AC & ventilating systems. If the air temperature indicates a fire, the fan is shut down.