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Pentair megatherm pool heater problems

Brand new pool heater worked fine all summer and then in September it just burned up

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 10865 Answers

SOURCE: My pool heater will not start. The power light is off and the pressure sw is lit.

You must turn on the pump and let water circulate through the pool and the heater before you turn on the heater otherwise you will ruin the heater

Posted on Apr 16, 2009

  • 128 Answers

SOURCE: pentair pool heater reads err,

Check the transformer for 24 volts

Posted on Aug 23, 2009

  • 990 Answers

SOURCE: R=5 CODE ON A PENTAIR HEATER ?

flame sensor falure, probally your pilot.

Posted on Jan 20, 2010

  • 990 Answers

SOURCE: E04 comes on after fan purge cycle-Pentair minimax nt pool heater

This is a fan falure code. It can mean the fan has problems (not likley if the fan goes and isn't labored) You have a sensor in your exaust (probally not this if you don't get a good start) The culperet is probally in the negetive pressure sensor. This is a 2-3 inch disc with wires going to the controls and a rubber tube going to the fan. Pull the tube from the fan and make sure the fan fitting is clear (poke with a tooth pic) Be sure their are no kinks in the hose. If the heater is 4 years old the diaprahm could be bad in the pressure sensor. Check the other things first but this is probally your problem. Good luck, hope this helped.

Posted on Jan 26, 2010

  • 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

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Pentair mastertemp 250 NA. heater will not fire, no error codes. starts fine, gas flows, igniter heating but still will not fire. It has a new valve, gas pressure entering valve from new regulator is 8.35...


All appearances - No fuel to ignite!
evrything else looks good, proper gas pressure, proper volts at igniter, etc - it should ignite! If fuel present, heater should Fire!
make sure all valves are open.
Gas valve is ON
AND purge any air from gas line.
IMPORTANT ****. If you bled gas line, don't try to ignite for a few minutes. Allow gas to dissipate first, use a fan to help.

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I have a mastertemp pentair heater. No error codes. Pool heater works fine-- spa heater button will not light or operate. Any sugestions?


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I hope this helps.

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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.

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www.pentairpool.com

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I HAVE A PENTAIR MASTERTEMP 400000 BTU NAT GAS UNIT, NEW ON NEW POOL. IT WONT LIGHT, THE PLUMBERS RAN 1 INCH LINE TO UNIT AND STEPPED IT DOWN TO 3/4 3 FEET FROM UNIT, THERE IS ALSO A 3/4 INCH REGULATOR,...


Generally speaking, too small a gas line will not inhibit the heater from lighting; it just won't burn efficiently and you will likely shorten overall heater life due to burner corrosion and soot buildup on the heat exchanger. Unless the total run of pipe to the heater is under 20' the pipe should have been 1-1/4" or larger, depending on what type of pipe was used.

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That said, you should probably contact Pentair to arrange for a warranty service call to examine why the heater is not lighting. If the tech sites installation issues, be sure to get it in writing so you can go back to the plumbers for corrective action.

Contact Pentair. Select service providers and heaters and you should find someone local...

In case you do not have it, here is your owner's manual.

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1 Answer

Have a Triton Millivolt pool heater pilot is lit and nothing!!


Low out put voltage from the pilot generator and/or an open circuit in the control circuit...the most common is a bad pressure switch (dirty filters can hamper pressure switch operation).

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