Question about Pentair Control Board - 42002-0007s

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Pentair master temp e05 error code - Pentair Control Board - 42002-0007s

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  • Pentair Master
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Gas error

Posted on Nov 23, 2017

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Posted on Jan 02, 2017

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  • 366 Answers

SOURCE: Tonight my master temp 250 heated the spa to 80

You are right about the ignitor. Depending on how old your heater is. The ignitor can become weak and flame rectification will be intermittent. You may have to replace the ignitor assembly or at lease check to see that it's not corroded enough to impede gas flow.

Posted on Oct 29, 2009

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  • 990 Answers

SOURCE: I have a Pentair Mastertemp 250 pool heater with

This is an ignition flame falure code. Could be you don't have gas getting to the pilot, no spark to ignite the pilot or your ignition is not reading the flame. Sorry to say but it's probally time to get the pool guy out to look at it. Good luck.

Posted on Apr 15, 2010

  • 1 Answer

SOURCE: getting a E05 code on my Mastertemp pentair

I have same problem. Mechanic not sure what to do. May need a new board.

Posted on Jul 31, 2010

  • 94 Answers

SOURCE: Pentair mastertemp 200 will work for a while and

If you are firing, and then going off and getting an E05, your igniter is to blame. It may be glowing but it's getting weak. The diagnostic goes further but that is usually the fix. with inactivity, the igniter is always to blame. You really need to fire it off weekly to make it reliable.

Posted on Feb 25, 2011

  • 31 Answers

SOURCE: I have a Pentair 40,000 BTU pool and spa heater.

The heater is trying to light but cannot. Either the igniter is broken or you are not getting any gas to the igniter. Check to make sure your gas valves are on.

Posted on Apr 18, 2011

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3 Answers

Master temp 400 with E05 error message, already replaced stack flue sensor, thermistor, and igniter. Any suggestions?


I have the same exact problem with this unit. Obviously getting gas to the unit, because it runs and pumps out some serious heat for a short time, but then kicks off. Did anyone ever figure this out or did you buy a new heater? :-)

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1 Answer

Pentair minimax e05


Try changing the "stack flu sensor". It could be the sensor is bad or the sensor could be detecting a bigger problem. The sensor can not be jumped out.

Apr 04, 2017 | Pentair Minimax NT Heater

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Tonight my master temp 250 heated the spa to 80 degrees. I went out to jump in and saw error code E05. I shut it down and killed power for a little while. Restarted system, blower kicked on, burner light...


You are right about the ignitor. Depending on how old your heater is. The ignitor can become weak and flame rectification will be intermittent. You may have to replace the ignitor assembly or at lease check to see that it's not corroded enough to impede gas flow.

Oct 28, 2009 | Pentair Mastertemp Heater

1 Answer

Error code EO5


I am assuming that the manufature is Master Temp by Pentair. Is this correct? If so, the manual for it can be found here:
http://www.staritepool.com/pdfs/MasterTempOM.pdf

Aug 22, 2009 | Pool & Spa

2 Answers

Code E05


E05 and E06 is the error codes for a faulty stack flue sensor. try changing the sensor first is the cheapest. if that doesn't work check for corrosion on control board in which case will have to change out board.

Apr 20, 2009 | Pentair Mastertemp Pool & Spa Heater Dual...

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