Vulvan v20 VSi Gas boosted Solar Indirect System.
9 year sold, problem is sometimes it fails to get start and no hot water and lately hearing some crackling, popping sounds coming up from the tank too sometimes. I checked the OK Monitor on it and red LED is blinking with a pattern which when I checked with manual shows IGNITION FAILURE / FLAME FAILURE. Check images. it's not happening all the time and it gets fixed automatically after sometime but I want someone who knows about it as if you come and check it may not be happening at that time
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