Question about Raypak TEMPERATURE SENSOR IID UNITS Part number OPT 6238014 RAYPAK INC Replacement Part

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I have Raypak RP2100 spa Water heater.Last 5 years working good, But now its not working.I check all switches but How can I check sensor ? I cut sensor wire and touch togeather on that time start igniter and lit for 5 second but not flow gas in the burner.So main valve not supply gas in the burner. I thought I need to change my sensor may be its out of order. Please give advise. Dilip Patel

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Check flame sensor after replaceing pressure switch

Posted on May 25, 2016


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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

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SOURCE: My raypak rp2100 electronic seems to light the

It is probably something much more simple than that...Turn it on and stand back until it finally ignites, then look, using a mirror, at the burner tray from below. You will probably find a lot of the tubes, especially those near the pilot area, are not working or are burning bright orange. If that is the case, something, probably spiders, are blocking the gas from getting into the tubes. That will cause the big burst at ignition as the gas builds up for a bit before it finally reaches the pilot area.

Posted on Aug 14, 2009

  • 246 Answers

SOURCE: Pool heater shuts off itself before the set temp is reached

need new board control kit

Posted on Aug 25, 2009

  • 139 Answers

SOURCE: Service light comes on our Raypak RP 2100 pool heater.

this usually indicates a high limit must first ascertain if you have a component failure or a true high tempature condition.your model has 2 limit controls and they are both located in side panel on water in/out header

Posted on Sep 19, 2009

  • 78 Answers

SOURCE: i have a Raypak Digital Millivolt pool/spa htr which stopped heat

Don, I suspect the error message is the cause of your problems. A flow error is either real (low flow) or not (bad flow switch). Either way, you get the error code displayed. Always take the filter out of the equation first to make sure it's just not a dirty filter causing the issue. A sand filter can be placed in the "bypass" position or a filter cartridge could be removed. Restart the pump and see if the error code goes away. If it does, clogged filter, real flow problem. Clean / replace the filter. If it does not go away, locate the pressure switch, pull off the two leads and jump them together. If the code goes away, false problem, bad switch. Replace it. Rob

Posted on Apr 22, 2010

  • 990 Answers

SOURCE: Back flare on Raypak pool heater

You will need to pull the burner tray out and clean and blow out the burners. Then you will need to pull the orfaces from the gas manifold and clean each one and blow out the gas line. Then with a mirror you will need to check the fire brick inside the burner box. Then you will need to replace anything that is damaged. Good luck.

Posted on May 15, 2010

Testimonial: "thanks for the insight. I assume that I will have to disconnect the gas line and then reconnect afterward. Appreciate your information."

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If you received the PRS error, then it is the water pressure switch. The water pressure switch, or heater actuator, ensures
that the heater operates only when the filter pump is in
operation. It is located on the inlet/outlet header. It is
factory set at 1.75 PSI for deck-level installations.
When the heater is located below the level of the spa
or pool, it may be necessary to adjust the pressure
switch to compensate for the no-flow static head. If it
is necessary to adjust the water pressure switch, Follow the directions in your manual.If your is the low Nox model, then you have a combustion fan. This has a fan air pressure switch but the error code for it is FAN I believe. If you don't have a manual you can get one at

Jul 14, 2010 | Raypak Rp2100 Pool & Spa Heater Lonox 407k...

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Raypak pool heater is making a knocking noise

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I have a RayPak 2100 heater and I have the following error:
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