Hello there, Offending source code is if( ( BattVoltage> 129 ) || ( BattVoltage < 144 ) ) Maybe swap || for && would be better. This problem I found by using cppcheck. It said [rhino.c:190]: (warning) Logical disjunction always evaluates to true: BattVoltage> 129 || BattVoltage < 144. Regards David Binderman