Edited as forgot it’s an Evo 1
Grahamsphillips The only odd thing about this on your Evo is;
Low water would cause the pump not to run, but the heaters would still work? OR, perhaps not on an Evo1! Check the low water system, that could be intermittently faulty
I can’t think of anything that would cause the pump not to run, all the displays to be normal and the heaters to be off as their is not really a common single component that affects all those, except for the main board. The only problem with this is, I am not sure how the mainboard could introduce this very specific set of faults. I guess anything is possible, but it just sounds unlikely?
Or perhaps it’s just some loose wires on the mainboard?
