Question about Pool & Spa
The pilot lights as normal, then the burner will ignite. After the burner ignites, the pilot flame goes very low to the point of going out and then the burner goes out. The pilot will then reignite normally, the burner will reignite, it will run for a few minutes and repeat the cycle. On the other 403A that I have the pilot stays lit continuously when the heater is calling for heat, and the burner is ignited. Would this be a problem with the rectifier or the gas valve?
I'm thinking after the main valve opens the pressure could be dropping in the pilot tube. this could be due to a dirty, plugged and sometimes spider web inside the pilot tube. rare but does happen, nice warm home for a spider. good luck. if not let me know. could also be weak pilot coil.
Posted on Jun 09, 2017
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Posted on Jan 02, 2017
I called Nexgrill technical support at 1-800-913-8999. They are sending me a new thermo couple to keep the valve open when ignited - so the patio heater will stay on. I needed to give them the serial number (inside the propane tank door) and fax them a copy of the receipt.
Hope this helps.
Posted on Jul 18, 2008
Sounds like a bad thermocouple. This part sends a millivolt signal to keep the gas valve open but shuts it off when it cools - or if something goes wrong with the ignighter - to prevent fires. It's easy to replace and not super expensive. See your local Rheem dealer.
Posted on Aug 14, 2009
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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