I installed a SmartShunt about a year ago and have had occasional extraneous high voltage alarms which I cannot figure out. These happen on random days when the solar controllers are in absorption mode. I might go for a month or more with no alarm and then have several in a single day. I have the high voltage alarm level for the SmartShunt set at 14.8 volts but it signals a high voltage alarm at levels below 14.5. Today, for example, I have had alarms where the voltage was recorded at 14.42, 14.43 and 14.44
I have no reason to believe I have ever had a battery voltage above 14.8 so have no idea why I get these alarms. The history for the SmartShunt shows a maximum high voltage of 14.68 since install and my solar controllers' history shows maximum high voltages of 14.44 for today when I have had three high voltage alarms. Today the alarms have all happened with the inverter turned off and really nothing going on on the boat that would cause any more of a transient than a refrigerator compressor turning on or off (e.g. less than a 10A change).
Can anyone help me understand what is going on?
