or can no longer satisfy the millivolt requirements of the thermocouple despite proper gas pressure

the 415-43676-03 ensures the integrity of the combustion chamber by preventing overheating conditions that could lead to system damage or safety hazards

This is a must-have component for any veteran contractor tasked with balancing HVAC system performance and occupant comfort while mitigating the risks of setpoint drifting

such as a grounded contactor coil or pinched thermostat wiring

this ASME Section IV certified safety valve is factory-set at 75 PSI to ensure reliable overpressure protection

Maxitrol TS144 Sensor 30067439-890 or can no longer satisfyThe Maxitrol TS144 is a precision engineered discharge air temperature sensor designed specifically for integration with Selectra modulation systems. This dual range thermistor serves as the primary feedback loop for the gas valve, ensuring optimal burner adjustment based on real time discharge temperatures. Functioning within a 40F to 80F minimum and 80F to 140F maximum range, it provides the critical data required for Selectra air temperature