Question about Raypak 266K BTU Digital Residential Natural Heater

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HELP!!! I have a raypak rp2100, 264,00 btu Nat. gas heater ( digital ) I had the gas meter checked by the gas co., OK . Turn the unit on , it goes through its readings, then the pilot light will light and stays lit. The burner will not fire up. I can hear the gas valve click open. A couple times it fired up but spit and sputtered for a couple seconds, then nothing

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  • Raypak Master
  • 4,292 Answers

Check voltage to gas valve if too low it wont stay open also check pressure switch and connections

Posted on May 25, 2016

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

johnsonr1
  • 91 Answers

SOURCE: pool heater wont fire up

Its just after 1 am here as well, Ontario Canada. Yes, you have to remove the front lower panel by raising it then pulling out at the bottom. Then compare the valve you have with the 2 in the picture on pg 5. If it is easier, you can have your husband call me while doing this and I can talk him through it. My contact information is located on the main page of my company website www.emshvac.com

Thanks
Richard

Posted on Jun 23, 2009

  • 139 Answers

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

this usually indicates a high limit condition.you 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

  • 990 Answers

SOURCE: Raypak boiler nat gas for

Guessing you have a milivolt heater. While your pilot will light when you push the pilot light button down you need to generate 200mv to open the selenoid for the pilot and another 300mv for the main valve. This can be checked by removeing the leads from the pilot generator (wires from the pilot), Push the pilot button down and hold in place (a small screwdriver wedged in becide the button will do this) Then check the milivolt reading from the generator. This reading should be between 500 and 700mv (1/2 to 3/4 of a volt) If you don't have this your pilot generator is bad.
If you do then you need to hook the leads back up to the valve and unhook the saftey circut leads and try to light the pilot again. If the pilot still won't light your gas valve is bad. If it does then you have a problem in your saftey circut and you will need to check each item in the circut by removing and jumping past.
This would be more in line with just the main side of the valve not opening. So I'm sure you will find it to be the pilot generator or the valve being bad. As I stated before this system only runs on 1/2 a volt so all connections need to be clean and tight also. Could be other problems but this should cover the common reasons. Good luck.

Posted on Mar 13, 2010

kirkx
  • 2019 Answers

SOURCE: I have a Raypak Pool

Hard to be sure, but if the pilot light is lite and the gas is still not being allowed through, then it is most likely to be the thermocouple. The tube that senses the heat of the pilot light, and carries that information back to the valve. In fact, often the thermocouple is just not placed directly in the pilot light flame well enough. If it is well heated, then I would change the thermocouple. Some are electric, and others use pressure. But it is usually not hard to change, and they often go bad.

Here is an image of a typical pressure operated one:
http://poolparts2u.com/data/cart/products/231.jpg
http://poolparts2u.com/products1.asp?catid=1&prodtype=6&type=231
Here is a link that shows electrical ones:
http://www.parts4heating.com/Pool-Heaters-Raypak-RP2100-Low-NOx-R335B-s/928.htm
But there are also other possibilities, such as the high temp cut off switch.
You can test that with an ohmmeter, but be careful because you would need to do it hot.
Other possibilities is that if you recently opened the piping, you would need to purge the air out, and if you used galvanized pipe or have any sediment, it can also plug the tiny gas orifice. You can remove, inspect, and clean it. But careful not to **** it out by sticking a wire through it too roughly.

Posted on Jun 25, 2011

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