Contents technical service manual dishwasher specification 2 test program 24 theory of parts 5-23 function description 3-4 inspection 29-33 location 5 pcb 6-7 inlet valve 8-10 drain pump 11-12 heater 13-14 washing pump 15-16 procedure 25 error code 26-28 water circuit 3-4 pressure switch 17 ntc 18-1...
Specifications for the basic operation instructions, please refer to the instruction manual attached with each unit. Electrical supply 220-240v, 50hz supply water pressure 0.04mpa-1.0mpa supply water temperature below 60℃ - 2 - models:wqp12-b9227e.
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Process of water inlet (indicated by magenta route) in this process, regeneration water route is cut off, main water route is open. The water in the main water route is softened when pass through the softener, and then enter in the tub. During this phase, some of inlet water will be stored in the ai...
Location theory of parts -> inlet valve washing pump capacity softener overflow switch filter system heater over heat proof micro-switch dispenser sump water inlet air breaker pressure switch (83/63) (only for models whose water filling be controlled by pressure switch) pressure switch (140/120) ple...
Pcb theory of parts -> printed circuit board is the control center of dishwasher, which receive and process signal from components, send order to components and deal with the feedback information, etc. Removing the control panel the control panel can be removed from dishwasher door. 1. Remove the si...
Pcb theory of parts -> map of pcb description mark function heat output for heating element acl input of live wire acn input of bull line is input of door switch ev1-l firewire input of inlet valve re thermister ml washing pump ps drain pump d/ed dispenser ev1 inlet valve ev2 softener ev3 halfload v...
Technical data location of inlet valve appearance inlet valve theory of parts -> the work principle the inlet valve is electromagnetic valve that decide whether water enter or not. Valves are normally closed. Each time the appliance requires water, the controller will convey an electric signal to th...
Inlet valve theory of parts -> 3. Top panel 4. Left side panel 1. Baseboard 2. Left baseboard 5. Middle rear crosspiece inlet valve access inlet valve 1. Disconnect power. 2. Remove the water inlet hose. (note : be careful of remain water drop.) 3. Remove the baseboard, left baseboard, top panel, le...
Inlet valve theory of parts -> check machine part 1. If the electric part is ok, we need to check the machine part. 2. Remove the baseboard, left baseboard, top panel, left side panel and middle rear crosspiece. 3. Check the valve filter. If the valve filter is blocked, we need clear the residues. 4...
Drain pump theory of parts -> bottom view location of drain pump technical data the work principle to washing pump connect to drain hose motor terminals drain pump integrated into sump the work principle drain pump consists of electrical motor, impeller, inlet and outlet. Drain pump is a kind of pum...
Drain pump theory of parts -> check the machine part 1. If the electric part is ok, we need to check the machine part. 2. Remove bottom board. 3. If the non-return valve is wrongly assembled, the tub will remain much water. We need to re-assemble the non-return valve. 4. If the drain pump is working...
The defeat point 1. The heater coil is broken, so the heater cannot work. It will cause the e3 error. 2. The thermostat is active, so the heater cannot work. It will cause the e3 error. 3. The connector is loose, so the heater cannot work. It will cause the e3 error. Heater theory of parts -> bottom...
Inspect heater 1. Remove bottom board. 2. Use the multi-meter Ω shelf to measure resistance between the two terminals shown in right picture, the resistance is about 29Ω to 31Ω. 3. If the measured resistance is not correct, it means the heater coil or the thermostat is broken, we should replace the ...
Blue black m blue a 150℃ red washing pump theory of parts -> bottom view location of washing pump technical data the work principle washing pump is a kind of asynchronism motor with capacitor. The stator consist of silicon steel stack and two coils, main coil and assistant coil . The defeat point 1....
Washing pump theory of parts -> check the machine part 1. If the electric part is ok, we need to check the machine part. 2. Remove bottom board. 3. Check the pump assembly, if the bracket is loose, it will bring the noise, we need to tighten it. 4. If the wash pump cannot start and the machine hasn’...
The pressure switch consists of a moving diaphragm and disc which activate a change over contact. The contact can be calibrated to trip and reset at the desired pressure levels, the main application is to control the level of water in appliances. May also provide flood protection. In our production,...
Ntc theory of parts -> ntc bottom view location of ntc the work principle the work principle negative temperature coefficient thermistor is integrated into sump, which is used for measuring temperature of water in the tub. Access washing pump 1. Remove bottom board. 2. Remove two screws securing the...
Ntc theory of parts -> 15℃ 17.48kΩ 20℃ 12.12kΩ 25℃ 10kΩ 30℃ 8.299kΩ 40℃ 5.807kΩ 50℃ 4.144kΩ 60℃ 3.011kΩ 70℃ 2.224kΩ 80℃ 1.667kΩ 85℃ 1.451kΩ ntc inspect ntc 1.Open the control panel and take out pcb; 2.Unplug the re connector(shown in below picture), then use the multi-meter Ω shelf to test resistanc...
Flowmeter theory of parts -> location of flowmeter the work principle flowmeter flowmeter is integrated into air breaker. Function of flowmwter is measure how much water has entered in appliance. It consists of impeller, tongue tube and terminal, etc. When water pass through the flowmeter, moving wa...
Inspect flowmeter 1.Open the control panel and take out pcb; 2.Unplug the con27 wire(shown in below picture), then use the multi-meter diode shelf to test whether electrical pulse is sent out from two black wires while water is passing through flowmeter, or not. 3. If there is continual electrical p...
Safety hose theory of parts -> location of safety hose the work principle mechanical aquastop hose electronic aquastop hose there are two types of safety hose, mechanical aquastop hose and electronic aquastop hose, which have different principles and assembly modes. Mechanical aquastop safety hose h...
Safety hose theory of parts -> inspect safety hose access safety hose clamp bound be lt wire co nnecter (no nee d to di stinguish positive and ne gative elec trode) clamp r ing 1. Remove baseboard, side baseboard, top panel and left side panel. 2. Remove clamp, cut the bound belt and disconnect the ...
Test program to activate test program, with the door closed and machine off, hold down the program button and press the power button until the machine enter into test program. The appliance will pause and stand by(as step 00). Then press program button to start the test program. During test program ...
Procedure -> test program no. Display on the screen process 0 8:88 initialization 1 0a inlet valve 2 09 washing pump and dispenser 3 08/ tempera- ture value heating element 4 07 drain pump 5 06 pause 6 05 inlet valve 7 04 washing pump 8 03 pause 9 02 washing pump 10 01 drain pump and regeneration va...
How to know which error code has occurred to know which error code has occurred, refer to the previous table named test program operation. Take 9348 for example, if the error 1 has happened, the buzzer would alarm for 30 seconds and “e1” would be shown on display. Other error alarms would be shown i...
Error code test program -> e1 water filling exceed pre-set time if the inlet valve has been opened for 4 minutes but the water quantity hasn’t reached the desired value(measure by pluses), e1 would occur. When e1 occurs, the drain pump will run until flowmeter keep motionless for 2 minutes and all t...
Error code test program -> e4 overflow in test program, once open-circuit failure of thermistor is detected by controller, the e6 would occur. When e6 occurs, the drain pump will run until flowmeter keep motionless for 2 minutes ( if the model with the pressure switch (83/63),drain pump would run ti...
E1 tree inspection -> if the problem has not been solved through all the inspection mentioned above, maybe the pcb has a malfunction. So, replace pcb and test again. E1 code longer inlet time make a check of tap no water not open open it to solve the problem opened check whether the inlet valve circ...
E2 tree inspection -> if the problem has not been solved through all the inspection mentioned above, maybe the pcb has a malfunction. So, replace pcb and test again. E2 code longer drain time some water check whether the drain pump circuit is correct or not. (mentioned in section 4) solve the proble...
E3 tree inspection -> e3 longer heating time check water temperature in the tub low check whether the ntc circuit is correct or not.(mentioned in section 4) high not make a check of over heat proof heating micro-switch. Replace switch to solve the problem failure ok make a check of heater. (mentione...
E4 tree inspection -> e4 overflow is there any water on the bottom board? Make a check of flooding switch circuit(normally closed) solve the problem reconnect the wire of flooding switch circuit and check again ok still wrong repair or replace it to solve problem no water check whether flooding swit...
E6&e7 tree inspection -> e6 open-circuit failure of thermistor check whether the ntc circuit is correct or not. (mentioned in section 4) reconnect the wire of flowmeter circuit and check again not solve the problem ok replace the ntc to solve problem still wrong e7 short-circuit failure of thermisto...
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