How To Know Which Error Code Has Occurred - Toshiba DWS-22A Series Service Manual

How to know which error code has occurred

Symptom
During the water inlet step, if the flow
1
meter
can't detect the defined water after 4
E1
Minutes , or can't detect 30 pulse after
60s, the dishwasher will warning for E1.
(only appeared in the factory mode)
when the temperature cant reached the
E3
defined value after 30 minutes, the
dishwasher will warning for E3.
the water flood into the bottom and result
E4
in the detective switch moves and keep
2s, the dishwasher will warning for E4.
(only appeared in the factory mode)
E6
E6 - thermal sensor cut.
E7
E7 - thermal sensor short.
E9
If the following conditions occur, the
dishwasher will warning for EA:
1. The temperature exceed 140℃
(proceed to Next step);
2.The temperature exceed 140℃
EA
(stop washing);
3.Water inflow more than 5 times within
1minute;
4.The steam generator thermistor is abnormal.
Ed
Communication is abnormal
Water tank level switch does not move
(only appeared in the factory mode).
EF
When washing, water tank level switch
does not move after water inflow 180s.
Attention
Priority level of E4 is the highest. E4 operation is valid after other error
operations have done. When E4 operation has done, all the others are invalid.
In test program, E1, E3, E4, E6, E7 are valid.
Error Message
The buttons short.
Possible Reason
1. check the water supply
2. check the inlet valve
3. check the inlet
4. check the flowmeter
5. check the pressure switch
1. check the heater
2. check the thermistor
3. check the PCB
1. check the use of the detergent
2. check whether the appliance is level
3. check the micro-switch
4. check the drain pump
5. check the amount of the filled water
6. find where leakage is
1. check the inlet water temperature
2. check the thermistor
3. check the PCB
Check buttons or change indicated pcb
1. check the heating element of steam generator
2. check the steam generator thermistor
1. check buttons
2. check the control panel
3. check the PCB
1. Check the water tank level switch
2.Cheak the water tank level switch and inlet
valve
6. check the drain
7. check the PCB
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