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The Honeywell Q4100C9056 is a professional-grade silicon carbide hot surface igniter engineered for high-performance service replacement in 120 VAC gas-fired systems
By applying consistent thermal energy to the compressor housing
According to the manufacturer specifications
or diagnostic LED codes on the control board indicating a weak flame signal
Reznor 210765 Temp Switch The Honeywell Q4100C9056 is aThe Reznor 210765 Nozzle Temperature Switch is a critical genuine OEM replacement part specifically calibrated for high performance waste oil heaters and unit heaters. Factory set at 160F, this nozzle temp switch functions as a vital thermal control component within the oil preheater assembly, ensuring the fuel reaches the precise temperature required for stable atomization and efficient combustion. Also identified by alternate part numbers WB 10899
US$ 11.90
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