Minimax Heater heats spa to approx 20 degrees then starts to cycle, Shuts burners and ignition off, Then goes thru startup procedure and re-ignites and heats for approx 30 secs then shuts off. It will continually go thru this cycle.
Both control knobs are on Max, Have bridged the 2 safety shutoffs & the Hi temp, Still have the same issue regardless if switched to Spa or Pool. Pressure switch remains closed aswell, So this is not causing the issue.
Change the assembly valve
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