Common Service Questions What causes this limit switch to trip frequently

Key Benefits: Precise Thermal Protection: Factory-calibrated to open at 190°F to protect heat exchangers from oxidative stress

removing lime scale deposits that cause harvest delays and distributor tube blockages

Is this an OEM replacement part

The compact design and tab-to-screw terminal adapters ensure an efficient on-job replacement process for technicians

Rheem-Ruud 42-105601-20 Pressure Switch Common Service Questions What causesThe Rheem Ruud 42 105601 20 Pressure Switch is an essential safety component designed for specific furnace and air handler applications. This single pole single throw (SPST) switch is factory calibrated to a 0. 45" WC set point, ensuring precise monitoring of combustion blower performance and venting integrity. As the direct replacement for 42 24335 20, this genuine OEM part maintains system UL certification and prevents furnace operation during