or the control board flashing a specific LED fault code indicating "pressure switch failed to close" or "remained open

causing the branch pressure to stay at main line levels regardless of setpoint

to achieve precise temperature control

Which refrigerants are compatible with this check valve

Maxitrol TD244AP Temperature Selector Els PW 17895 or the control board flashingFor contractors servicing direct fired heating equipment, the Maxitrol TD244AP is a critical component for maintaining precise space temperature control. This panel mount temperature selector is engineered for the Selectra Series 44 system, providing a setpoint range of 40 80 degrees F. As a veteran grade remote temperature selector, the TD244AP functions by sending a resistance based signal to the Maxitrol amplifier, which then modulates the gas flow