Lennox 74H01 Potential Relay 318518-761 Check the flame signal strength

Check the flame signal strength using a multimeter set to microamps (µA)

As a technician-grade differential air pressure switch

The Nidec-US Motors 6128 Motor is a professional-grade refrigeration condenser fan motor designed for demanding commercial HVACR applications

It should be inspected or replaced if the actuator shows signs of hysteresis

Operating on a 24V supply

Lennox 74H01 Potential Relay 318518-761 Check the flame signal strengthThe Lennox 74H01 Potential Relay is a mission critical OEM replacement part designed for high torque motor starting applications in residential heating and commercial air conditioning systems. Engineered to manage compressor start up cycles, this potential type motor starting relay features a normally closed (SP N. C.) contact configuration that effectively removes the start capacitor from the circuit once the motor reaches sufficient back