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between the compressor and the condenser coil
and water heater repairs
preventing premature compressor failure
In steam systems where high-accuracy regulation is critical
This module is a direct OEM replacement part for Laars Pennant
York S1-3500-3121 Limit Switch 320074-702 between the compressor and theWhen 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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