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For technicians troubleshooting furnace short cycling or units that trip on high limit
non-serviceable valve designed for long-term reliability
The Sporlan QC-1 features a replaceable design that allows for rapid field service without de-brazing the entire valve body from the liquid line
you can use a longer lead as long as the excess copper tubing is carefully coiled away from the flame and high-heat zones
or a "clicking" sound from the compressor
Lennox 34M74 Pressure Switch Els PW 17895 For technicians troubleshooting furnace shortThe Lennox 34M74 Pressure Switch is a critical safety component engineered for precision monitoring of combustion air in residential and commercial HVAC systems. This OEM Lennox replacement part features a single pole, single throw (SPST) electrical configuration, meticulously calibrated to an actuation point of . 33" WC (inches water column). Designed with a standard 1 4" barb connection, it ensures a secure, leak proof interface with the inducer
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