Question about Raypak Rp2100 Pool & Spa Heater Lonox 407k Btu Natural Gas Polymer Header Digital Rp407aenc

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Opened the pool for the season but can't get heater to start

I recently opened my pool. The water temp is roughly 77 degrees. I wanted to take the chill off but can't get the heater started. Any suggestions as to what the problem mighe be? Raypak pr 406a-epc
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I have a problem with my heater, on the display said: FFL (false flame signal) the board looks good and it sent volts at the lite but it doesn't makes any mouse to start, whats wrong with it? Help me pls

Posted on Apr 07, 2012

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The most common problem is pilot light. IF you have electronic ignition, check the electronic starter. You also need to be sure you are getting gas to the unit.
David.

Posted on May 25, 2009

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Posted on Jan 02, 2017

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I am getting an error code ags


AGS - Auto Gas Shutoff = Because of a problem sensed, the gas valve is closing, stopping gas supply and hence heater shutoff.
Improper water flow through heater! Check filter, pump, water supply lines, anything that will reduce water flow into heater.
A faulty Pressure Switch may cause this problem as well.
or...
In coming water to heater is over 104°
If all is good with the above, replace the AGS Switch.

May 31, 2015 | Jandy Laars LX Pool Heater / 400,000 BTU /...

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Water Isnt Getting Hot


Could be that the plumbing got clogged while the system was idle

May 13, 2013 | Sta Rite Pool & Spa

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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.

Mar 04, 2017 | Pentair MasterTemp 400000 BTU Pool and Spa...

1 Answer

Pentair Mastetemp Pool and Spa Heater will heat to about 91 or 92 degrees and thats it. We have it set at 102 but it stops at 92 at the most.. It fires up then quits, fires up then quits. What could be...


This could be a number of things. Most often it will be the internal by-pass. You find the assembly inside the water header, it controls water flow through the heater. When it goes bad it can open at a low temp and keep the water from going through the heater.
Also you will want to check the temp probe on the side of the header. If this is bad it will usually show up on the temp display though.

Nov 19, 2010 | Pentair Mastertemp Pool & Spa Heater Dual...

1 Answer

Sta-rite heater error code 126


The 126 is not an error code, but it maybe the temp of the water that the heater is reading. If the heater thinks the water is 126 degrees, it will not start at all.

If the heater is reading the wrong water temp, the problem is the Thermister, which is the sensor that is suppose to read the water temp. You will need to replace this sensor in order to correct the problem with the heater. It is really easy to do!

If you have a manual for the heater, if you go to the Replacement Parts Listing for the Electrical System, page 53 in the online version, the Thermistor is Item #9. It goes into the left side of the manifold in the to place, between the first two manifold bolts.

Jun 22, 2009 | Sta Rite Sr200lp Max E Therm Pool & Spa...

1 Answer

Sta Rite Sr333na Max E Therm Pool & Spa Heater gauge stuck?


Anytime the heater is reading the water temp to be above what it actually is, especially 126, the problem is the Thermistor, or Temp Sensor, for the heater. This is a very easy part to replace. The Thermistor is located on the manifold, on the left side, between the top two bolts.

Sorry this is a late response! Hope that it helps!

Apr 10, 2009 | Sta Rite Sr333na Max E Therm Pool & Spa...

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