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

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Heater worked fine yesterday. Today water temp is 76. When I try to raise temp, requested temp increases only to 76 then drops to 66. Temp will not raise above 76>

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Bad Board. Need to replace

Posted on Oct 28, 2010

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South seas spas


need more info. will temp lower? if temp lowers try setting up to 104 if desired temp will not increase sounds like you need temp adjustment switch if desired temp goes up to 104 but water doesnt
sounds like temp sensor if temp sensor is good heater element

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My "Millennium" spa has stopped circulating. The heater turns on but soon turns off within a minute or so. What should I look for to fix the problem??


I would start at the termostat,you could check water temp with cooking thermometer.let me know what you find out.

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Ptg 74pvn 2 rtg 74pvp


copy following links for rheem/eco-sense error codes, manuals, required yearly maintenance, support number and resources.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
Probably bad PC board, or bad remote control

Gene
h

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1 Answer

Manual


Those machines use the incoming water temp to start and then boost it, so check the incoming water temp. If it is too low then you need to increase it. It could be the heater that is not working but you need to check the incoming water temp first.

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2002 dodge neon running VERY HOT ... what to do next?


Have you verified that system has been "burped" of air? That the fans kick on? Check radiator hoses for kinks. You can try running without the thermostat to see if that helps and can identify if the thermostat could be a problem. You may need to check your coolant mixture too.
Sounds like you have reduced flow or restriction in cooling (heat exchanger) as it runs fine at cooler temp but can't keep up when it gets warm.
New parts don't always equal working fine parts.

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1 Answer

Have window unit. Can't activate heating. Temperature scrolled up to 76, but doesn't seem to work. Fans work


May be your room heat temp more than your temp setting. Raise up the temp.And also check wiring to heater.

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the temp coming out of the vent should be 20 to 25 deg more then room temp and if AUX heat kicks in the temp should be even more.

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