SS300 Service Information (3-2017)
47
TROUBLESHOOTING
Icon
Code
Fault Condition
Reason
Correction
0x0702
EC-H2O
Pressure Switch
Active
The system pressure switch is
detecting a trip or unconnected.
1. System pressure too high;
needs repair.
2. Check connections. Verify
functionality of scrub head
switch and parking brake switch.
Connectors possibly wired to
incorrect switches.
0x0704
EC-H2O CAN
Communication
Fault
1. Board lost power or CAN
connection (wiring issue).
2. ec-H2O board may be damaged.
3. ec-H2O connector unplugged.
4. ec-H2O connector pin 2 or 3
disconnected.
1. Power cycle machine.
2. No communication with a
network module.
3. Check connections/wiring.
0x0708
EC-H2O System
Over Regulation
Warning
Cell has operated over target
current condition for last 50 treated
gallons.
Check water condition in solution
tank for presence of detergents.
0x0711
EC-H2O Pump
Open Fault
Wiring, connector, or control board
issue on ec-H2O pump.
Control board is not detecting
pump current. Check connections
for voltage and verify pump is
operating.
0x0713
EC-H2O Pump
Over Current
Fault
Current draw higher than expected.
Check pump operating current.
0x0716
EC-H2O Pump
Short Fault
1. Shorted load condition.
2. Some higher current draw than
hardware design limit.
Check EC-H2o pump and
harness
0x717
EC-H2O FET
Faults
1. Power/battery issue on startup.
2. Control board problem/damage.
1. Check harness power and
ground connections.
2. Replace EC water NanoClean
Controller kit.
0x0721
EC-H2O Cell
Open Warning
Wiring, connector, or control board
issue on the EC-H2O cell.
Refer to EC-H2O NanoClean
troubleshooting guide or contact
Tennant Technical Support
0x0723
EC-H2O Cell
Over Current
Warning
Current draw higher than expected.
Refer to EC-H2O NanoClean
troubleshooting guide or contact
Tennant Technical Support
0x0726
EC-H2O Cell
Short Warning
1. Shorted load condition.
2. Some higher current draw than
hardware design limit.
Refer to EC-H2O NanoClean
troubleshooting guide or contact
Tennant Technical Support
0x0727
EC-H2O Cell
FET Faults
1. Control board problem.
2. Power/battery issue on startup.
Replace control board. FET
detection includes motor,
actuator, detergent pump,
vacuum, and battery watering
pump.
FAULTS (Cont’d)