babyman1737

Symptoms: Jandy LX250 will start, gas switch will click, fire up and exhaust heat for about 10 seconds, then shut down. The system does this twice, and then the AGS light comes on. Things I've tried: Checked the connections on both ends of the flame sensor, cleaned the flame sensor with emry cloth (already looked clean). Stuck a paper clip in each of the brass nozzles to see if there were any spider eggs (none that I could tell). I have a craftsman multimeter: http://www.sears.com/craftsman-digital-multimeter-with-ac-voltage-detector/p-03482146000P?prdNo=8&blockNo=8&blockType=G8 but I'm a noob when it comes to using a multimeter, like even choosing which of the three ports I plug my red and black wire into, and which red/black wire should be touching each terminal lead on the test subject. Any help would be great, I suspect the fenwal ignition control box. After a lot of reading, I think I'm supposed to test for 24v on some of the connections on the fenwal box such as the TH and VAL. A new fenwal is $200. I don't really want to just be purchasing parts at random to replace without knowing much. Any initial guesses or troubleshooting steps for me?