Question about Pentair Control Board - 42002-0007s

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Pentair master temp 250 wont come on i flip the breaker and it read 128 then r-8 then shuts down and doesnt repond

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 990 Answers

SOURCE: Pool Heater Mis-reading Temp.

Your temp sensors are on the heater, a small tube that slides into the water manifold, usually on the left side. On the remote it will be in one of the pipes coming from the pump or the filter. If it is after the heater you should move it to between the filter and heater. It will be a tube that is in the pipe with a stanless steel clamp holding it in place.
To find out wich one it is you will need to remove the remote from the system by takeing the wires that go to it from the wireing inside the heater and wire nuting the wires in the heater together. If the heater runs normal then it is the sensor for the remote if not it is the sensor for the heater. Let me know how you do and if need be we can get a little more specfic for your system. good luck.

Posted on Mar 29, 2010

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UglyPoolGuy
  • 46 Answers

SOURCE: have pentair easy touch controls just installed

If the Easy Touch is reading the correct temperature, but the heater is not - you need to double check the temperature of the pool water with a standard pool thermometer.
Other things to consider:
1) The water is traveling too slowly through the heater. If the water is heating too quickly, then it will shut it off. If it takes a while for this to occur, then this would not be the issue.
2) Thermostat/thermistor is incorrectly reading the temperature of the water prematurely shutting the system down.
Make sure you really are checking the temperature of the water and matching this temperature up with one of the two readings that you are getting. Don't just take the word of the displays on either unit.

Posted on Dec 10, 2010

  • 4 Answers

SOURCE: have pentair easy touch controls just installed

Go to "calibrate" on your new unit and lower the spa "set at " temp a little

Posted on Dec 15, 2012

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When turning on power display reads 128 then error code r 13, after this it say's spa on but the temp reads 126 and the water temp is only about 68 so the heater never comes on.


This is not an error code. 128 r13 is the normal programming or software version for your model. you need to press the spa on button again, make sure the temp set point is higher then the actual water temperature

Mar 07, 2016 | Pentair Master Temp 400K BTU Natural Gas...

1 Answer

We have a Pentair Master Temp 250. Had gas hooked


make sure gas pressure is correct for unit if not it wont light also check wiring if hooked up 120 volt read inside front cover for wiring modifications

Oct 04, 2014 | Pool & Spa

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