9
SERVICE AND MAINTENANCE (CONTINUED)
Troubleshooting
SYMPTOMS
An LED light flashes at
the base of the soap
dispenser twice every
2-3 seconds.
No soap dispenses.
Insufficient amount of
soap dispensed.
Only air bubbles are
dispensing.
No foam is dispensing.
Only liquid soap is
dispensing.
PROBABLE CAUSE
Low battery is out of power (lower
than 3.9 volts)
The sensor lens is dirty
The sensor cable is disconnected
The tube (soap and air) is
disconnected
No power supply or wrong
connection
The soap pump is not primed after
refilling
The dispensing tube/check valve is
blocked
The nozzle is clogged
The check valve is clogged
The soap pump is not working
correctly
The soap pump outlet is clogged
The soap pump is leaking
The air pump is disconnected
The air pump/tube is clogged
The air pump is not working
RECOMMENDED ACTION
Replace the batteries and prime the
soap dispenser
Wipe the sensor lens with a clean,
dry, soft cloth
Reconnect the sensor cable
Reconnect the tube to the control box
Check the power supply connection
Prime the pump
Clean the dispensing tube/check valve
with warm water
Remove the nozzle and foaming
assembly. Clean with warm water
Remove the check valve from
dispensing tube. Clean with warm water
Order and install a new soap pump
Remove the soap pump tubing
Order and install a new soap pump
Check the air pump connection and
reconnect the tube to the control box
Remove the air pump tubing. Clean the
air pump outlet with warm water
Order and install a new air pump