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

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I have a Raypac 2100 digital pool heater and it's reading PRS. Is there someone out there that can tell me where this pressure switch is? According to the guide, PRS means "pressure switch open". If I put enough pressure on the digital control (manually push in with a little force), the spark kicks in but as soon as I let go, PRS comes back on and it shuts down. Please help.

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On the side of the heater where the pipes are connected; under the top cover. It is a round disk threaded into the header. It is likely that your filter needs a good cleaning if your heater has always worked reliably in the past. If you have a cartridge filter, it may be time for a new element if you can no longer get it clean enough to get the heater to work.

Posted on Sep 26, 2009

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My raypac 2100 was working fine, recently replaced control pad. Today set heater to 90 it heated to 89 then pad read "off". Pad would not respond after that. Turned breaker off then on and error...


The EOL code means End Of Line. It means the heater has given up trying to run. There are a number of problems that could cause this issue. There could be no gas pressure, a defective gas valve, or something wrong with the control board, etc. To determine exactly what is wrong a person qualified to diagnose the problem will need to follow a diagnostics document from Paypak or call Paypak's technical support line. If you have a volt/ohm meter and have some debugging experience you might convince a tech support person to help you diagnose what the problem is. If you are not successful with that idea then you will need to find a pool equipment professional to do the job. I hope this helps.

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Screen has prs clean filter screen and service flashing


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Upon start heater comes on for about 5 seconds and shuts down. Then starts again and stops again, and so on. "PRS" appears


PRS means the pressure switch is opening and shutting off the heater as you describe. Either your filter and/or inlet baskets need a good cleaning or the pressure switch in the heater is failing. Try a thorough cleaning first and then replace the pressure switch if necessary.

John

Oct 25, 2010 | Raypak Rp2100 Pool & Spa Heater Lonox 407k...

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Raypak 2100 pool heater " PRS " diagnostic reading What does it mean and how do i correct it


This is low pressure. Start by checking your baskets for clean then be sure to clean the filter. Then make sure the by-pass valve is closed and lastly if your pump basket is cracked or broken check to be sure nothing is clogging your impeller.

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Have an error code GVP


You didn't indicate what model heater you have, but here are some of the fault codes you might see. Could it have been GVO? You can download a manual for your exact model at www.raypak.com
BD1 Board failure
EEP Microprocessor error
FAN Blower pressure failure
FFL Flame sensing when pilot and gas
valves are closed
GVC Gas valve closed
GVO Gas valve open
HL1 High limit switch #1 open
HL2 High limit switch #2 open
IGN Ignition failure
ILO Ignition lockout - Propane units only
PRS Water pressure switch open
ROL Heat roll-out safety switch open
SNS Sensor failure, Water temp. below 36°F
or above 110°F
VNT Vent switch open

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Well, I replaced the pressure switch with no joy. I tried all 5 levels of pressure 1-5 and every wiring combination. Finally, I returned the new $70 pressure switch and took the 2 wires and tied them together (jumped them). Here's the only downside...If you run your pump in backwash, recirc, waste, or any mode that would cause water to bypass the heater it MUST BE OFF. Otherwise, let it ride. It's working great and I hope to go into October weather permitting.

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The raypac 2100 pool heater turn on but when you go to fire it al


If you hear it sparking, verify the spark is happening INSIDE the combustion area and not shorting out at the ignition module. Also verify you actually have gas available and the gas valve is turned on...

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1 Answer

Pool heater cycles off and on


check pressure switch if ok check for loose wires if ok check copper tube to pressure switch

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