Question about Pentair Mastertemp Heater

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How can I manually light a master temp pool heater?

The ignition control module is not working the light the ignitor.

Posted by Anonymous on

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  • 44 Answers

You can not do that danger will robinson!!!

Posted on Dec 10, 2014

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 7 Answers

SOURCE: gas will not stay ignited

could be dirty heater you have to clean the runners and the smole nozzles that are in the manifold below the gas valve it's like a 9/16 size you pull them off and check make sure they are clear through, sometimes little spiderwebs build up inside them. if it's all clean, then it could be you flame rectifier/ aka: flame sensing rod, that tells the htr that there is fire so it keeps running. Let me know what happened.
John

Posted on Jan 06, 2009

  • 1 Answer

SOURCE: service light on

I just had the same problem resolved, my mastertemp 400 would run up the temp to 82F and then cutoff, the service light flashes and then 50 seconds later the heater would restart and run for 2 minnutesbefore shutting down again and relighting in 50 seconds. Repeating until the temp setting is reached.

I had the pool guy out 3 times until he found a bad thermal regulator valve (kit #77707-0010). Once replaced the heater runs great.

He told me that it's my pool chemestry that is to blame, I had it checked (like I do weekely by me and monthly by the pool supply store) and it perfect??? I'm now questioning what caused the corroson and stop it from coming back?

I hope tis helps.

Posted on Feb 06, 2009

rcampsr
  • 90 Answers

SOURCE: Heater cycles on and of, pool/spa does not reach desired temp

hello, It sounds like you may not be getting circulation thru the heater. Make sure the valves are open to allow water to pass thru the heating system. Some systems use a bypass on the heater so there is not a lot of wear on the coil system in the heater. If it is not circulating it will get too hot and the safety shut down will occure. If you are getting water circulating thru the heater, then the thermocouple or auto start igniter system is not working correctly. It is trying to start and can't then recycles. If the burners are igniting on the startup and then shutting back down you may have a bad control unit or thermal sensor unit. Since the unit is gas have a professional service it for you. Good Luck, RAC

Posted on Apr 20, 2009

  • 128 Answers

SOURCE: minimax pool heater cuts out at 91 degrees when remotely set for

Check the temp reading on the heater. It is probably set at 91...heater control should be set to 104

Posted on Aug 30, 2009

  • 910 Answers

SOURCE: Pentair Master Temp 400 E05

If you've already changed the thermal regulator then the only other thing it could be is the flue/flame sensor.

It could be just a loose or bad connection so I'd check them first before replacing it.

If you've got a meter then you could disconnect the sensor and check its continuity (should be 3-4M Ohms). If its OK then check the continuity of the wiring between the sensor and board.

Posted on Jun 12, 2011

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Does the fan motor seem to start off completely quiet then slowly ramp up in speed very very gradually?

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3 main possibilities.
1- ignitor
2- bad ignition control module
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its probably the flame sensor.

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Pentair MasterTemp 400 Heater Will run fine for about 1-2 hours then the service heater light comes on and the control panel is completely locked up. I can only reset by cutting power to the machine, where...


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.

Nov 23, 2010 | Pentair MASTER TEMP HEATER 400 000 BTU NG...

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

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1 Answer

Brand spankin' new Master temp 400 NG,won't heat past 77° spa is set at 101°,pool at 88°, does heater pool/spa temps have to be manually set to max(104 i assume) for intellie touch to...


if the intellitouch is properly wired to the heater, it should all be automatic and you should be able to control it all from the remote.

there should be three wires connected to the circuit board behind the manual control on the heater (labeled "POOL", "SPA", "Common"). Those are the wires that the intellitouch uses to communicate with the heater.

You can download manuals from the Pentair website.

www.pentairpool.com

Aug 24, 2010 | Pentair MASTER TEMP HEATER 400 000 BTU NG...

1 Answer

Will not light it reads i.f


This is ignition falure and is ether a bad ignitor or flame sensor, or possebly an ignition control module. Check your wire connections and check for power getting to the ignitor and if you can ohms threw the ignitor. If you have no power it could be the ign control, if no contuniuty threw the ignitor then that will be the problem. If your not sure then this may be one for the repairman.

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I have dealt with similarly damaged boards, I can testify that while they can be repaired, the cost of labor is the most significant factor and some parts may be tough to get. I would have never undertaken it but the company which manufactured the control board (this was a sophisticated electric security gate) couldn't ship us the board in the time we could afford to wait so I repaired it. Once. The second time lightning hit it, I replaced the board and ordered the installation of a 'whole house' surge arrester.

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Hi, I cannot get the pool heater to kick on. It


If the ignitor is not glowing then it's the ignition module.

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