Replacement for Rheem Water Heater Parts：Used to verify whether exhaust gas flow from the combustion chamber of a gas water heater is unobstructed, and to monitor the combustion chamber temperature or exhaust status. If exhaust gas flow is blocked, causing heat to backflow, the sensor will trigger the system to shut down
SP21019 Chamber Sensor Troubleshooting: The sensor may be physically damaged or have failed due to aging caused by high temperatures; the water heater displays an exhaust-related error code, affecting normal operation; serves as a replacement part when troubleshooting “poor exhaust” issues
About Installation: We recommend checking out the YouTube channel “Modern DIY Projects.” Their videos provide step-by-step instructions, including the four wrench sizes required, as well as a star wrench and a pair of pliers
Installation Reminder: Before installation, be sure to follow these safety precautions: shut off the gas supply, close the water supply valve, disconnect the power source, and wait for the unit to cool down
Packaging Information:Gasket X1，Tinnerman Clip X4，Temperature Probe Assembly X1，Thermistor X1，Pan Head Torx- 1 in X2，Torx Head Screw - #8 x 3/4 in.long X2，Hex Nut,8-32,w/ Extemal Tooth Lock Washer X1
