130
Service Manual – SC500
30 - Solution System
Troubleshooting
Trouble
Possible Causes
Remedy
Small amount of solution or no
solution reaches the brush
The solution filter is clogged/dirty
Clean the filter
Solution supply valve locked in (semi) closed
position
Replace the valve
Solenoid valve (EV1) broken or electrical
connection interrupted
Replace the solenoid
valve/repair the electrical
connection
Presence of debris in detergent solution tank
blocking the outlet hole
Clean the tank
Presence of debris in the detergent solution
hose, blocking the passage of the liquid
Clean the hoses
Main machine controller (EB1) faulty
Replace
Display controller (EB2) faulty
Replace
User interface controller (EB3) faulty
Replace
The solution reaches the brush
also when the machine is off
Presence of dirt or scale in solenoid valve
(EV1)
Clean the solenoid valve
Solenoid valve (EV1) broken
Replace the solenoid valve
The EcoFlex system detergent is
not reaching the brush, or is not
arriving in sufficient quantity
On the brush comes only water
The detergent flow percentage is too low
Check/change the
percentage
The hydraulic circuit upstream of the
detergent pump is not triggered
Check if the hose is filled
and, if necessary, perform
one or more draining cycles
The detergent pump (M4) is broken or there is
an open in the electrical connection
Replace the pump/repair the
electrical connection
The detergent pump (M4, piston pump) is
broken
Replace the detergent pump
The head of the detergent pump (M4,
peristaltic pump) is exhausted
Replace the head of the
detergent pump
The motor of the detergent pump (M4,
peristaltic pump) is broken
Replace the detergent pump
There is foreign material/debris in the
detergent tank clogging the output hole
Clean the tank
There is debris in the detergent hoses
clogging the detergent flow
Clean the hoses
The detergent flow regulation button
is
not working correctly
Replace the User interface
controller (EB3)
Main machine controller (EB1) faulty
Replace
Display controller (EB2) faulty
Replace
User interface controller (EB3) faulty
Replace