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This scroll fan is a primary fit for Carrier
failure to hold setpoints
Versatile Application: Standard 9-13 PSI operating range integrates seamlessly with pneumatic thermostats and controllers
Smith Cyclone series risks CO leakage and inefficient fuel-to-air ratios
Superior Sealing: Features ANSI Class IV leakage protection with a 0
York S1-3500-3121 Limit Switch 326010-701 This scroll fan is aWhen you are troubleshooting a mid efficiency or high efficiency furnace that is short cycling or displaying a four flash diagnostic code, the York S1 3500 3121 Limit Switch is the OEM replacement part required to restore safe operation. This is a normally closed (NC) safety device calibrated for an opening temperature of 165F and a closing temperature of 105F. As a genuine Johnson Controls component, it is designed for drop in compatibility with
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