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

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Raypak RP2100 pool heater set temperature stuck on 50 degrees

I turned on my heater today for the first time this year and the set point was 82 deg F and the heat went on. I checked it a few hours later and the setpoint showed 50 deg F and I couldn't change it by pressing the touch pad. I removed the board and reseated the connections but it didn't help. Is there any way to fix this problem?

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I started my heater Raypak RP2100 for the first time this year. The display board lights up and the temp reads 70 and the spa is off. I press the mode button and nothing happens. Also the up and down buttons don't change the display. It just stays frozen on 70 and reads off. I pulled down the board and pressed the reset button and it goes back to 70 and off. There are two other buttons on the back of the board and when I press them they don't do anything to change the display. I can't change the display to get the heater started.

Posted on May 30, 2010

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Could be spider webs in the orfices, which would allow the burners not to light.
Could also be a bad thermostat or pressure switch.

Posted on Jun 20, 2009

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