19 Errors & Lockouts
Mk8 MM Manual Page | 382
Cap Probe 1 Still Water
Detected
Wave signature high to low peak distance is less than still water
threshold
• Check still water threshold in expansion option 28
• Check capacitance probe 1 reading history
Cap Probe 2 Still Water
Detected
Wave signature high to low peak distance is less than still water
threshold
• Check still water threshold in expansion option 28
• Check capacitance probe 2 reading history
Cap Probe 1 Serial Number
Mismatch
Probe serial number detected is not the commissioned probe
serial number
• Alarm
• If changing capacitance probe 1, re-commission is required
Cap Probe 2 Serial Number
Mismatch
Probe serial number detected is not the commissioned probe
serial number
• Alarm
• If changing capacitance probe 2, re-commission is required
Cap Probe 1 Detected But Not
Optioned
Probe connected but not optioned
• Check expansion options 1 and 3
• Check wiring on terminals 1P+, 1P-, 1T+ and 1T-
Cap Probe 2 Detected But Not
Optioned
Probe connected but not optioned
• Check expansion options 1 and 3
• Check wiring on terminals 2P+, 2P-, 2T+ and 2T-
External Level Sensor Input
Low
3mA or lower received from 4-20mA external level sensor
• Check feedback from external level sensor
• Check wiring on terminals EX- and EX+
Reading of one of the probes/sensor is less than or equal to its
end-of-probe value or the difference between probes/sensor
readings is greater than the mismatch threshold
• Check expansion option 27
• Check capacitance probes and sensor readings
Probe Serial Numbers are the
Same
One capacitance probe detected on both capacitance probe
terminals
• If using two capacitance probes, then two individual probes must be connected
• Check wiring on terminals 1P+, 1P-, 1T+, 1T-, 2P+, 2P-, 2T+ and 2T-
High water and 1
st
or 2
nd
low auxiliary level inputs detected
simultaneously
• Alarm
• Check wiring on terminals HAI, 1AI and 2AI
Probes/ sensor detects 1
st
or 2
nd
low and high water
simultaneously
• Check water level readings for probes and sensor if optioned
• Re-commission probes/sensor
Permanent Alarm Reset Input
Input held on alarm reset terminal for more than 10 seconds
•
Alarm
• Check input on terminal M/R