My pump controller packed up in the middle of my final job of the day so I packed up and went home now its working fine? The only explanation I can think is that it was in full sun with the back doors of the van open and it got too hot? Anyone else had this happen.
Yesterday in the South saw temperature of 32 plus centigrade. Electronics struggle with high temperatures as it effects the processor and drive stages.
The controls are designed to operate in a temperature range between -5C and 40C on the PCB and pump drive stage
In direct sunlight in a metal box the temperature is going to exceed this by some margin. What you saw was the pump drive stage overheating and shutting down in these extreme temperatures. Once it had cooled down again it continued working.
Also be aware that these High temperatures will affect the pump in a similar way and could melt cables so its worth keeping these out of direct sunlight as well.
Temps are down a bit today so there should be less of an effect.
The advice given to people in hot extreme climates would be.
Keep the control out of direct sunlight and perhaps crack open the windows a little to get air moving around in the van.
I would advise against drilling holes in the bottom of the enclosure as this may expose the PCB to water vapor damage.