Question about Pentair Easy Touch Indoor Control Panel for 8 Function Systems

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I have a mastertemp 400 and a pentair easy touch control panel 8. The heater panel is reading the right temp, but te easy touch is not. I changed the thermisitor just in case, but same results.

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  • Pentair Master
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Replace temp sensor on controller

Posted on Oct 07, 2017

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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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

  • 990 Answers

SOURCE: heater cycles on / off

This could be a water flo problem. you need to chech to be sure your by-pass valve is closed down enough to force water threw heater, There is a internal by-pass that could be a problem also, or a bad pressure switch. If the by-pass isn't the problem then you should check these also.

Posted on Jul 26, 2010

adamh294
  • 310 Answers

SOURCE: Pentair MasterTemp 400 Heater Will run fine for

This reminds me of some of the High temp sensors ive replaced. I would start with checking the pumps flow to the heater. Make sure there are no abstructions and at least 35 GPM (gallons per minute) running to the heater. If your flow is too low, you will trip the high limit sensor after a short while.
This could also mean you need to clean out the heat exchanger. When an exchanger gets dirty, it blocks the flow of water, slowing it down and "super heating" itdue to the water being in contact with the exchanger for too long. This will also trip the high limit and call for service.
If both the above items check out, contact me @ adamh@newconceptchem.com and I will guide you further.

Posted on Nov 23, 2010

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

john224
  • 1378 Answers

SOURCE: Have a Pentair MasterTemp 400

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!

Posted on Mar 30, 2011

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Easy touch control system temperature set at 75 but heater does not change from manual setting


make sure the temp on heater is set at 104. otherwise easy touch panel wont override manual setting from the heater. if you press the mode button on easy touch panel, and it doesn't change, then one of the relays inside the panel is the problem

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I have a Pentair Mastertemp 400. It worked fine for 3 years until the temp sensor went out and both (internal and external) were replaced about a year ago. It then worked fine for about another 7-8...


You might have a much bigger issue than the temp sensor. When the heater is running hold the "pool" or the "spa" button for 12 seconds. This will show the exhaust temp, if the temp is rising above 375 degrees with in 1-2 mins then your not getting the heat out of the heat exchanger.
One other thing to check would be an external by-pass. If you have an external by-pass make sure the by-pass is set correctly. Opened or closed to much can cause the problem your having.

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Have pentair easy touch controls just installed new water temp sensor. spa is 88 degrees but master temp heater shuts off because it reads 104. what should i check? the thermistor/


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.

Dec 10, 2010 | Pentair Mastertemp Heater

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