Wednesday, 21 July 2021

Raypak - High 2 limit fault - checked unitherm governor, now what?

Over the weekend I was getting a high limit 2 fault after the heater was running for maybe a couple of hours. It was not a particularly hot day and water flow was about as strong as it gets (no blockages and freshly cleaned filter). After the first fault, I left the heater off for about 30 min with the pump running, then turned it back on. It fired up fine, ran for a few hours and then I got another high limit 2 fault.


So, after some researching I decided to pull the unitherm governor...

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