Seamless Compatibility - The 42002-0024S stack flue sensor & 42001-0063s high limit switch replacement for Pentair MasterTemp & Sta-Rite Max-E-Therm heater Always verify your original part number before purchase Premium Quality - The 42002-0024S sensor made of sturdy stainless steel material with smooth thread, and 42001-0063S sensor detects when water temperature exceeds safe level and automatically opens heat exchanger outlet Ensure Safety - Smart Protection for Your Pool System When the temperature exceeds the safe limit, 42001-0063S will automatically cut off the power supply, and the newly upgraded stainless steel material of 42002-0024S can withstand extreme smoke conditions to ensure safe use Plug-and-Play Installation - Quick tool free replacement and installation, ensure a 5-minute DIY replacement. Restore heater functionality instantly – no more error codes or shutdowns, it can fully meet your daily replacement needs Shop WIith Confidence - Funmit adhere to provide all customers with a simple, streamlined shopping experience of large appliance replacement parts, and prove that we have the highest quality parts and service out there. We stand by our products, and our customers are our focus as a business. If you have any quality problem, please contact Funmit customer service team in time, and we will try our best to solve your problems

MEASUREMENT:

TOTAL LENGTH: Approx 2.7" from plug head to sensor end.

PACKAGE INCLUDES:

1* 42001-0063s High Limit Switc & 1* 42002-0024S Stack Flue Sensor

FIXES THE FOLLOWING PROBLEMS:

Pool heater stopped running; Control panel showed "HLS"; Sensor's teeth rusted

FUNCTION INTRODUCE:

This replacement stack flue sensor, located on the exhaust elbow of a pool heater, prevents the flue gas output from exceeding 500°F

When this fails, your system will show error codes E05 or E06 to indicate