Jofel AA17050, User Manual, Page: 18 / 44

Trouble shooting electrical schematic
Electrical schematic
Power
indicator
light
Timing
digital
tube
Sterilizatior
indicator
light
State
indicator
light
E5
E3
E1
Digital changes
Light
Always light
Extinguish
Light
Status Introductions
Power input normally
Don't work
Working
UV Emission platedisinfect
sterilization startwork after
machine power on (one hour),
thereafter once a day
Countdown work
Motor fault, it can't start
normally
The voltage exceeds 15%
Machine temperatures
higherthan 80 ° C
Status
Extinguish
Flashing light
Extinguish
Jump display
E2
E4
E6
E8
Introductions
Power not supply
Master board fuse blew out
Motor fault, it can't
start normally
Trick or working time
longer than 25s
Sterilization work has ended
UV Emission plate error
Indicate drying time finished
Trick or working time longer
than 25 seconds
The voltage lower than 15%
Master board temperatures
higherthan 80ºC
Fan fault
Solution
Check the external power source,
close the power switch
Check motor connecting wires
and the rotor foreign material
Clear workspace foreign material,
restart to work
Turn off the power, re-power After LEDs
are off. Sterilization indicator is still not
lit. Please check the UV Emission plat
Clear workspace foreign material,
restart to work
Check the power supply circuit
Clear the foreign material of the air
inlet and air outlet
Check whether the Fan sensor
connect is loosen
Problem
No air blows even if
hands are inserted
Machine works long
time after hands
drawn out, finally
shows E2
No hot wind
Airflow is too low
Check
• Do the display indicators
lights up?
• Is the power switch on?
• Are you putting your hands
all the way in?
• Any dirt or foreign body on
sensor?
• There is a Built-in heater in
the unit. Any dirt on heating
sensor?
• Fuse inside terminal box
blown?
• Is the speed button on low
level?
Action
• Turn the ground-fault circuit breaker on.
• Turn the powerswitch on.
• Put hands all the way in .
• Switch offthe power button, and then remove dirt
or foreign body on sensor after the power light
gone out. When finished, switch on power button.
• Is the ambient temperature higher than 20 ° C?
• Switch off power, remove front cover. There is a
terminal box inside. Take down the cover of
terminal box. Check the fuse inside box which is
blown or not.
• Put speed button on the high level.
If the above actions do not work, turn off the power and the ground-fault circuit breaker, and call your dealer
to inspect and repair it if necessary. (Costs are as per agreement with the dealer).
If you discover the following circumstance, please inspection and handiing as following:
Power
switch
Reactor
FL
TRfilter
Wiring terminal
blocks
Heating
fuse
10A
Power
Control PCB
Common
mode choke
Filtering
capacitors
Filtering
capacitors
Fuse
Switch transformer
Infra-red light
receiving PCB
Temperature
probe
Infra—red light
start PCB
motor
Heaters
Thermal protection
switchr
Thermal Circuit
Breakers
Display PCB
UV start PCB
Heating
switch Speed
switch
- 18 -