Question about Pentair Minimax NT Heater

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Get power, smell gas, no ignition, E05 error message

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I am not sure if resetting the heater will work, or not, but it is worth a try! What you should do is open the right hand side door, find the POWER toggle switch and turn that off. Then find the Circuit Breaker for the heater and turn that off. Wait about 15 to 20 minutes, the reverse the order- Circuit breaker on, then the heater on. Try and start the heater.

If the error code comes back, check to see if there is glowing of the element. If not, turn over the Display Panel, there are Diagnostic Lights on the backside of the panel. If there is a light on next to a set of letters, that is whta is causing the issue with the heater.

Hope this helps!

Posted on Jul 13, 2009

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Posted on Jan 02, 2017

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E05 code on breville oven


An 'E05' error message indicates that there is a non-resettable issue with the appliance. Please contact our Consumer Call Center at 1-866-BREVILLE (1-866-273-8455) for further assistance with your oven.

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We have an error E05 PRINTER, what could be the solutions?


E05 Printer as an error message suggests that you have a problem with a printer attached to your system, so more information is needed in order to help you further:

What version of Windows are you using on the computer with this problem?
(Windows XP, Vista or Windows 7?)

What exact make and model of printer do you have attached?

What changes have been made that led up to receiving the E05 Printer error?
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Heater not working and error message E05 coming up. want pool warm for memorial day party!


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


Page 43 of your manual, found here suggests both E05 and E06 errors mean the issue is related to "...(the) fuel supply, thermal regulator, check for correct orifices, etc...". It also touches on the possibility that if the unit was converted from NG to PP or vice-versa that the orifices are not correct.


Start with these two areas...if you need additional assistance please comment to this answer with details from what you find while checking these areas and I'll try and help you from there.


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!

May 29, 2011 | Sta Rite SR400NA Max E Therm Pool Spa...

1 Answer

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

When I turn on the heater the service heater light turns on after about a minute, it's like the gas never ignites, I think the error code is n 5? Any suggestions


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. There is further diagnostic goes further but that is usually the fix.
Sometimes, when a heater has not been used in awhile, the igniter is always to blame. You really need to fire it off weekly to make it reliable.
But, lets say that the igniter has failed completely, then you would need to replace the igniter.
For a better diagnosis, we would need to know some additional information:
1) Is the heater natural gas or propane? 2) Do you smell gas at any time in the 5 minutes the heater is trying to fire? 3) If you listen closely, can you hear the "tick, tick, tick" of the igniter?
If you are able to provide us this additional information, we will be able to provide you with some more detailed ideas on what is going on!
Thank you for allowing us the opportunity to help and we really look forward to your feedback!
-The Ugly Pool Giy, www.WeFixUglyPools.com

Dec 09, 2010 | Pentair PUREX MINIMAX HEATER; THERMOSTAT,...

1 Answer

E05 error message & Service light on What does this mean? Is it something that can be fixed easily?


E05 is Ignition / Flame Failure in this model.
The most common cause of this is a bad ignitor, but can also be a bad flame sensor or ignition module.
Here is a link to the original manual with a very good service and troubleshooting section to accurately describe how to do this. I will put a simpleanswer on here, but it might be neccessary to do some reading too.

Turn off power to heater.
remove both front doors to compartment
Turn on power to heater.
Make sure the mode is set to pool/spa on.
turn temperature up to desired
within 30 seconds the fan should come on.
once the "thermostat" light comes on in the front LCD then pay attention to the ignitor

The ignitor should now be glowing. (if ignitor dosent glow, repeat this process and use a multimeter to ensure power is getting to the ignitor)ignitor part number is 471602

after 30 more seconds you should hear a little "pop" coming from the gas valve.
This is the gas valve opening to try to ignite. If the ignitor is working and the burner ignites, and then goes off with an E05 code, then this would indicate a bad flame sensor (part number 471603)

in rare cases, this code can be tripped by a lose wire on either of these parts.
The parts diagram in the manual on pages 33-34 will help to guide you where to look for these parts. It is always best to familiarize yourself with the heater before work is done.
Link for manual : http://www.pentairpool.com/pdfs/MiniMaxNTOM.pdf

If this post has helped please rate the post positively
if you need more assistance e-mail me @ adamh@newconceptchem.com

Nov 02, 2010 | Pentair Minimax NT Heater

1 Answer

I have a Pentair Mastertemp 250 pool heater with an error message E05. What does this mean?


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.

Apr 15, 2010 | Pentair Mastertemp Heater

1 Answer

Startup cycle goes fine. All lights(power, pressure, thermostat, and heater) sequence correctly. After ignition, heater fires up(seen through viewing window) but then blows out 15 seconds later when fan...


If you are getting fire and have an eo5 this is a reading for no flame so it is not reading the flame. What you probally have is small spider webs in your burner orfaces. You will need to pull the burners out and with a small wire or the like clear the gas orfaces going to the burners. These little webs can divert the gas to the main burners and keep it from the burner that reads the flame. Your heater will come on with a big woosh as the gas needs to come from other burners to fire. I hope this helps. Good luck

Nov 24, 2009 | Pentair MINIMAX NT TSI IGNITER

1 Answer

Fault E05-02


Hello sir; According the manu, the error you display,it means 12 volt low voltage power supply board have problem, change it.

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