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or whistling through the pipework
The 624625R ignition control features improved logic for flame sensing and timing sequences to ensure reliable burner cycles and safety shutdown protocols
Check the flame signal strength using a multimeter set to microamps (µA)
As a technician-grade differential air pressure switch
When troubleshooting "no heat" calls
Lennox 74H01 Potential Relay 318518-761 or whistling through the pipeworkThe 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
US$ 175.00
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