High Limit Switch for Pentair Mastertemp & Sta Rite Heaters
Replacement high limit switch for Pentair Mastertemp and Sta Rite heaters. Indicates when HLS LED is illuminated to prompt replacement. Customer note: easy to install and fits Pentair 400 series and other BTU units
Highlights
- compatible with Pentair Mastertemp and Sta Rite
- HLS indicator signals replacement
- measures high temperature limit (135F)
Pros
- easy installation
- fits multiple heater models
- clear LED indicator for fault
- compact inline sensor location
- durable construction (quality noted by some customers)
Cons
- mixed durability feedback
- some customers find it pricey
Best For
Features
- Compatibility This replacement hi limit switch will work on Pentair Mastertemp 400 parts along with all the other BTU's. It is also compatible with the Sta Rite heater and the Pentair Mastertemp 125
- Fault You will know to change out the hi-limit switch when the HLS LED indicator is illuminated. HLS is short for High Limit Switch. The upgraded Pentair boards will also say HLS on the main display.
- Location The high limit switch is located within the heater on the black manifold next to the other sensors. The two wires connecting to the sensor will be plugged in when opening.
- Purpose The purpose of this sensor is to measure the turn off the heater if the water temperature reaches the HIGH TEMPERATURE LIMIT of 135F. This is to ensure system safety.
- How to Install Turn off the pump and all the electricity going to the pool heater. Disconnect the two wires of the sensor and unthread the sensor out. Plug your new one in and redo the connections.
