scott94020 Posted May 24, 2020 Report Share Posted May 24, 2020 I have a Raypak p-r266a-ep-c that's about 5 years old, and I went to fire it up today and the pilot won't ignite. Its the digital version and I got the manual and did the troubleshooting. I took the igniter out and it fires a spark, took of the pilot gas tube, and it was clear as was the tip. I made sure the gas was on, I put a volt meter on the board at the MV-MV/PV terminals on the main board, when the igniter would fire the volts were around 19 ish, it tries 3 times in a row then waits then tries it again and I only get to see the voltage for a second so its somewhere around 18-20. The manual says its suppose to be 24 and if not the board is bad, if it is then the valve is bad. I guess my question is if the voltage I am reading is close enough given the short amount of time or is this typical of a failed board? Your help is appreciated! Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted May 24, 2020 Report Share Posted May 24, 2020 I would say it's the board. Your voltages are consistently low, which suggests a transformer or main power issue, and the valve will not open for low voltage, even if the igniter still sparks. Check incoming voltage to be sure it is not a breaker issue. Board failures are much more common than valve failures. Quote Link to comment Share on other sites More sharing options...
scott94020 Posted May 24, 2020 Author Report Share Posted May 24, 2020 Thanks, I was checking voltage at the wrong terminal, I checked at pv-mv/pv and had 28V, so I guess the board is OK?. Pilot tube is clear, when I removed it I could blow through it, gas at the propane tank is the same tank I use for my home, and everything is working there, although it goes through a different I don't have a gauge to check the pressure, but I'm guessing its a fuel supply issue, either from the shutoff value at the tank, before the heater or the heater valve. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted May 24, 2020 Report Share Posted May 24, 2020 Sounds like it. There is usually a valve at the heater for service purposes, just a knob type. Make sure that is open (valve handle in-line with pipe) as those are often turned off for winterization. Quote Link to comment Share on other sites More sharing options...
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