Trane VAL11539 TXV 318973-401 or a failure to reach

or a failure to reach reheat setpoints

this assembly prevents unsafe operation and promotes maximum energy efficiency

008 ppm w/w maximum remaining oil content

For technicians troubleshooting ignition failure or erratic flame signals

Move the jumper to the horizontal position for cooling or the vertical position for heating before powering the system

Trane VAL11539 TXV 318973-401 or a failure to reachWhen you're dealing with a 4 ton system pull down or a standard evaporator coil replacement, the Trane VAL11539 Thermal Expansion Valve is the critical metering device required to maintain stable superheat. This genuine Trane OEM replacement part is specifically calibrated for R 410A refrigerant applications, ensuring the evaporator receives the precise mass flow of refrigerant needed to match the current heat load. Unlike fixed orifice devices, the