Question about Raypak RP2100 DIGITAL POOL HEATER R265

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Just bought a used RP2100 P-R265A-EN and after hooking it up I following the operating instructions in manual but pilot does not light and after 2 minutes the LCD screen reads PLT (top left corner it shows SERVICE). Any suggestions on troubleshooting from this point to ID the problem ?

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  • John Prohaska
    John Prohaska May 11, 2010

    Did you bleed the gas line all the way to the manifold once you finished connecting it?

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  • Master
  • 990 Answers

Be sure to open the gas line at the heater and turn on at local valve to bleed the line. Let run for a few seconds till you smell gas. Close valve and close line then let sit for a few minutes till gas clears and try to light again. Let me know how you do and good luck.

Posted on Apr 23, 2010

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Posted on Jan 02, 2017

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How to replace a pilot


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1 Answer

Have a Raypak RP2100. When I turn it on the pilot lights fine but after a few minutes (~30 minutes) the heater turns off and PLT is indicated on the control panel. If I recycle the power it lights fine and...


If your Raypack (mine is a 2100 but most have the same electronic ignition pilot) lights and runs for about 2-5 minutes an then shuts off, you need to clean the pilot sensor. The pilot sensor tells the unit the Burners are running. If the pilot sensor becomes corroded, carbon, etc. the unit will light but will shut off after a few minutes as it thinks the unit is not operating properly. The unit will try to re light, but fail, and then PLT will show on the main programming screen. To fix the probelm, shut off the unit power. Remove the pilot assembly which is located at the bottom right of the unit. There is one screw holding the pilot assembly in place. Gently remove the pilot assembly. There is a fork like probe sensor (not the one with ignition and gas feed) that needs to be cleaned. Take some rough sand paper and clean it thoroughly. Re insert pilot assembly and fire the unit. If this fails, clean the sensor again. Problem solved!

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