No heat Rheem gas pack 3-flashes, not exactly what I expected

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I was called out because they had no heat. Found the draft motor running constantly. The high pressure switch had opened. Blower was not running, traced problem to the blower relay. I also found the flames not crossing over as they should. So, I replaced burners, and relay, and cleaned flame sensor and spark ignitor. The disconnect also needed some attention, and the drain could’ve been extended. Sometimes though, they just want to get it going. #hvac #hvaclife #fieldpiece #rheem #makita #furnace