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

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Posted on Jan 02, 2017

  • 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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1 Answer

Error e05


The EO5 error code on the Master Temp says that you have an "open stack flue switch or sensor. you may need to replace the sensor

try checking the vent

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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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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.

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I have a Pentair 40,000 BTU pool and spa heater. It comes on and then shuts off in about a minute with an error code appearing in the readout. The error code is E05. What does this mean?


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.

Apr 17, 2011 | Pentair MasterTemp 400000 BTU Pool and Spa...

1 Answer

Runs for awhile, then heater shuts off - have an E05 reading


Thank you for posting your question here on Fixya.com.


Error code E05 can be caused by many failures in several places. The owner's manual has a decent flow chart in it to help diagnose where the trouble lies. You will find it on page 43 here...

http://www.pentairpool.com/pdfs/MasterTempOM.pdf

Identifying problems with an electronically controlled pool heater is not a job for most homeowners without training and/or experience with this type of equipment. If you are unsure how to proceed no amount of tips from a site like this will replace experience. You may want to consider hiring a professional to look at your heater.

If you decide to pursue the repairs and need additional support please post as specific a question as you can as a comment to this reply.


If this answer does not fix your problem, please comment with additional details prior to rating the answer. You may also contact me thru our website at www.arrowpools.net. Positive feedback is appreciated once your problem is solved!

Feb 27, 2011 | Pentair MASTER TEMP HEATER 400 000 BTU NG...

1 Answer

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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