Hi guys just wondering if anyone can tell what's up with my digital flow controller it keeps stopping this is probably due to charging issues but on the display it says de when running or p5 when hose not pluged in any ideas before I see about new battery thanks
DE = Dead end. If the control is cycling in and out of DE unexpectedly it may be that the Calibration needs to be increased slightly.
If this is happening recently say in the last couple of days it could be caused by the drop in temperature. Water Viscosity changes as temperatures fall. In effect the water flows more slowly. To overcome this re run the auto cal with the pole extended.
Setting auto Cal:
https://www.youtube.com/watch?v=9kKoskb7l7c&list=ULWhat is Viscosity?
You will find many detailed technical explanations on line. For our purposes Viscosity is the thickness of a Liquid or liquid based product. Water has a low viscosity as it is thin and normally flows easily Oil in comparison has a high Viscosity it is thick and flows slowly.
Temperature will effect the viscosity of both water and Oil for example as they are heated the viscosity is lowered allowing the oil to circulate freely around your engine and lubricate it.
Water is effected by temperature in the same way in the summer months you may find that flow rates are higher than in winter due the fact the water is thinner and will flow faster.
More noticeable, is that in winter water viscosity changes as the cooler air temperature effectively makes the water thicker meaning the water will flow slower. Imagine the difference in pouring a cup of coffee against a Slush puppy which in effect is liquid ice.
The Viscosity of water in your system will effect the pressure as 1. The water is moving slower and 2. The hose walls will expand slower. Combined these two effects will make your system slower to pressure up in winter than in summer. Depending on how your system is set up together with the calibration and flow settings some may see no change or at least it is so slight not to be an issue.
Others may find a noticeable drop in water flow in the winter months caused by this change to the Viscosity (thickness of the water). The remedy is quick and easy – recalibrate the controller to take into account this slower water and the change in pressure dynamic.
