bit 0: When the operating pump is failed, whether it
switches to an alternative pump or not
0: Stop all pump action
1: Switch to an alternative pump
bit 1: During the operation, stop or standby after
resetting from error
0: Standby after resetting
1: Stop after resetting
bit 2: Whether the system can run or not when the
pump has an error
0: The system cannot activate
1: The system selects another pump to operate
0: Use the existed setting (default), judging by the
feedback deviation
1: Set the low water pressure percentage (%), check
for any fault by the feedback physical quantity