Question about Pentair Mastertemp Heater

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Heater does't fire. led appear 128,r13 what's problem?

Error 128,r13

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128 r13 is not an error code. its the startup sequence of that heater

Posted on May 15, 2014

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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

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Explain the code error r9 and what is the solution


I don't have a definite solution however r9 is a heater problem it could be a short curuit between the heater and ground make sure the ground wire has not become loose or corroded

Jul 19, 2015 | Washing Machines

1 Answer

Mastertemp 300 reads 128 r13 when breaker is turned on, then goes blank. any ideas? just replaced control board, transformer and ICM.


Do you have automation?
If so, Is it in Auto?
You still need to, Manually press the Pool or Spa ON button.
The 128, then the R13 are = Normal.
They are just confirmation of firmware numbers and the Revision of the software Logic.
Then if the Heater is NOT on, display will go blank.

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1 Answer

Sta-Rite SR400 heater displays error r13


this is not an error code, its the startup sequence to your heater. after those numbers have been displayed you have to press the pool on button and set your temperature

Dec 28, 2014 | Pool & Spa

1 Answer

What r13 code mean


There is no r13 code on your heater. The r13 flashes everytime you turn on your heater, wait, then see if it fires, if not, you will get an error code starting with EO then a number, or the "service system" or "service heater" light will come on.

Aug 06, 2014 | Sta Rite Maxi Therm 400k Btu Propane...

1 Answer

After 128 r13 displays, service system displays. What is wrong?


A lot of things could be wrong. Sounds like your not to mechanical, you could start with the air flow switch. I think it would be safer for you to call a heater pro.

Jun 15, 2014 | Pentair Mastertemp Heater

1 Answer

Brand new master temp 250 won't kick on to heat~ getting error code r13


r 13 is not an error code that is a program that runs at startup when the power is applied then the display goes blank, now you push pool on button and it should work

May 23, 2014 | Pentair Mastertemp Heater

1 Answer

Error code 128. R9


128 R9 isnt an error code

Jul 28, 2013 | Pentair Mastertemp Heater

1 Answer

I have a SR333LP poolheater will not turn on


Those are not service codes. Turn top over and look at the circuit board to see what light is lit

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