Optimum Pool Technologies manufacturers high quality replacement parts for the most common pool heaters on the market today. When your heater needs a repair, fix it the OPTIMUM way!
Replacing your broken Heater Thermistor & Hi Limit Switch is easy!
Two spades located on top of both the thermistor & Hi Limit Switch provide easy installation into the heater manifold. Existing wires can be unplugged from old thermistor and reused when replacing.
Replaces OEM Part No 42001-0053S & 42001-0063S
Heater Thermistor & Hi Limit Switch
For Pentair MasterTemp & Max-E-Therm Pool Heaters
If the temperature on your control panel’s display is showing an incorrect temperature, your thermistor may need to be replaced. Thermistors often display a temperature that is much too high when they reach the end of their lifespan.The High Limit Switch is used to detect when your water temperature has exceeded a safe level (135°F) and immediately opens the heat exchanger outlet when that happens. It is time to replace the High Limit Switch when the “HLS” LED is displayed.
MasterTemp & Max-E-Therm : Other Common Replacement Parts
Stack Flue Sensor: Part No OPT-42002-0024S
A 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 that the stack flue sensor must be replaced. This replacement stack flue sensor from Optimum Pool Technologies is compatible with Pentair’s MasterTemp, Max-E-Therm, and other Pentair Sta-Rite heaters. It is designed specifically to replace the Sta-Rite heater stack flue sensor.
Heater Pressure Switch: Part No 42001-0060S
The water pressure switch functions by turning off the burner if the water flow is interrupted. If the water flow is restricted, the water pressure switch may prevent the burner from firing and cause the “Service System” light to go on. If the light remains on after the filter has been serviced, have a qualified service technician check the system.
Gas Shutoff Switch: Part No OPT-0025S
The Gas Shutoff Switch is an important switch in your Max-E-Therm or MasterTemp pool heater, and is used to detect when your heat exchanger outlet temperature has exceeded a safe level (140°F) and the switch immediately opens when that happens. You MasterTemp heater will indicate when it is time to replace the High Limit Switch when the “AGS” LED is displayed.
Optimum Pool Technologies manufacturers high quality replacement parts for the most common pool heaters on the market today. When your heater needs a repair, fix it the OPTIMUM way!
Replacing your broken Heater Thermistor & Hi Limit Switch is easy!
Two spades located on top of both the thermistor & Hi Limit Switch provide easy installation into the heater manifold. Existing wires can be unplugged from old thermistor and reused when replacing.
Replaces OEM Part No 42001-0053S & 42001-0063S
Heater Thermistor & Hi Limit Switch
For Pentair MasterTemp & Max-E-Therm Pool Heaters
If the temperature on your control panel’s display is showing an incorrect temperature, your thermistor may need to be replaced. Thermistors often display a temperature that is much too high when they reach the end of their lifespan.The High Limit Switch is used to detect when your water temperature has exceeded a safe level (135°F) and immediately opens the heat exchanger outlet when that happens. It is time to replace the High Limit Switch when the “HLS” LED is displayed.
MasterTemp & Max-E-Therm : Other Common Replacement Parts
Stack Flue Sensor: Part No OPT-42002-0024S
A 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 that the stack flue sensor must be replaced. This replacement stack flue sensor from Optimum Pool Technologies is compatible with Pentair’s MasterTemp, Max-E-Therm, and other Pentair Sta-Rite heaters. It is designed specifically to replace the Sta-Rite heater stack flue sensor.
Heater Pressure Switch: Part No 42001-0060S
The water pressure switch functions by turning off the burner if the water flow is interrupted. If the water flow is restricted, the water pressure switch may prevent the burner from firing and cause the “Service System” light to go on. If the light remains on after the filter has been serviced, have a qualified service technician check the system.
Gas Shutoff Switch: Part No OPT-0025S
The Gas Shutoff Switch is an important switch in your Max-E-Therm or MasterTemp pool heater, and is used to detect when your heat exchanger outlet temperature has exceeded a safe level (140°F) and the switch immediately opens when that happens. You MasterTemp heater will indicate when it is time to replace the High Limit Switch when the “AGS” LED is displayed.
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