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Prima LPR661, Technical & Service Manual

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Prima LPR661 Technical & Service Manual Download Page 22

PCB

Theory of parts

-

>

Map of PCB

Description

21

Mark

Function

HEAT

Output for Heating Element

ACL

Input of live wire

ACN

Input of bull line

IS

Input of Door Switch

CON21

Output for Washing Pump(ML) and Drain
Pump(PS)

CON22

Ouput for Dispenser(D/ED), Softener(EV2),
Halfload Valve(EV3) and Inlet Valve(EV1)

CON24

Salt detect(ISS), Rinse detect(ISB)

CON25

Overflow detect(IAQS), Pressure Switch
detect(PO)

CON26

Thermister(RE)

CON27

Flowmeter(FM)

Summary of Contents for LPR661

Page 1: ...ump 29 30 Procedure 37 Error code 38 39 Water circuit 4 5 Circuit schematic 6 Exploded View Part List 7 18 Technical Service Manual Dishwasher Pressure switch 31 NTC 32 33 SAFETY NOTICE This documenta...

Page 2: ...04MPa 1 0MPa below 60 12 Models 220 240V 50Hz 0 04MPa 1 0MPa below 60 8 Supply water pressure Supply water temperature Settings LPR661 Electrical supply Supply water pressure Supply water temperature...

Page 3: ...0 A 250 VAC Make sure that the water supply is turned on to full pressure Open the door press the ON OFF button and the ON OFF light will turn on Press the prog button to select a desired Wash cycle s...

Page 4: ...2 Installation instructions 3...

Page 5: ...Regeneration water route Regeneration water route upper spray arm upper spray arm top spray top spray tube tube Inlet water route Inlet water route upper spray arm upper spray arm softener softener Wa...

Page 6: ...ome of inlet water will be stored in the air breaker to be regenerating water Cycle washing action is driven by washing pump motor Water can obtain the power during it passing through the working wash...

Page 7: ...Circuit Schematic Function Description Circuit schematic diagram 6 LPR661 LPR659...

Page 8: ...Exploded view Function Description 7 LPR661 Please Note Exploded view and part list of each model have some different visions so please refer to newest vision Midea sent you...

Page 9: ...Exploded view Function Description 8 LPR 661...

Page 10: ...Exploded view Function Description 9 LPR 661...

Page 11: ...019 673000700081 Sump 1 1020 672000700028 Clamp 12 7 1 8 1 1022 673000900073 PVC hose 1 1027 674000600106 Drain pump 1 1029 673002200043 Salt filler 1 1030 673002800050 Softener cover assembly 1 1031...

Page 12: ...bracket 2 2005 674000800032 Dispenser 1 2006 674000100453 Wiring harness 1 2008 672000500006 Ring 6 4 2009 672001300029 Left hinge 1 2010 672001200012 Joint pin 2 2011 672001300030 Right hinge 1 2012...

Page 13: ...nk band bracing block 2 3033 672001500202 Lower rear crosspiece 1 3034 672001500007 Middle rear crosspiece 1 3035 673002200079 Measurable spoon 1 3048 672001100004 Adjust steel rope 2 3049 67200230000...

Page 14: ...Exploded view Function Description 13 LPR659...

Page 15: ...Exploded view Function Description 14 LPR659...

Page 16: ...Exploded view Function Description 15 LPR659...

Page 17: ...673000900160 PVC hose 1 1027 674000600106 Drain pump 1 1029 673002200043 Salt filler 1 1030 673002800050 Softener cover assembly 1 1031 673001700053 Softener cover gasket 1 1032 673001600039 Softener...

Page 18: ...006 674000100445 Wiring harness 1 2008 672000500006 Ring 6 4 2009 672001300029 Left hinge 1 2010 672001200012 Joint pin 2 2011 672001300030 Right hinge 1 2012 672001300023 Door gemel assembly 1 2013 6...

Page 19: ...0 Lower rear crosspiece 1 3034 672001500114 Middle rear crosspiece 1 3035 673002200079 Measurable spoon 1 3048 672001100004 Adjust steel rope 2 3049 672002300002 Adjust nut 2 3050 673001300012 Top boa...

Page 20: ...arts 19 Inlet valve Washing pump Capacity Softener Flooding switch Filter system Heater Anti dry heating pressure switch Dispenser Sump Water inlet Air breaker Power switch Door latch PCB Pressure swi...

Page 21: ...The control panel can be removed from dishwasher door 1 Remove the six screws securing the control panel to the door 2 The control panel will drop down and be free of the door But the wiring will sti...

Page 22: ...e ACN Input of bull line IS Input of Door Switch CON21 Output for Washing Pump ML and Drain Pump PS CON22 Ouput for Dispenser D ED Softener EV2 Halfload Valve EV3 and Inlet Valve EV1 CON24 Salt detect...

Page 23: ...r enter into machine when it receive the order given by controller to air breaker connect to inlet water hose terminals electric coil inside The defeat point 1 The valve coil is broken so the valve ca...

Page 24: ...the water valve 7 Reverse the above procedure to install 1 Open the control panel and take out the PCB 2 Unplug the CON3 and P4 wires then use the multi meter shelf to measure resistance between the...

Page 25: ...board 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 If the valve filter is clear and the valve can t inlet w...

Page 26: ...e very easy to start The defeat point 1 The motor coil is broken so the drain pump can t work It will cause the E2 E4 or E1 error 2 The magnetism of motor rotor is weak so drain pump cannot work It wi...

Page 27: ...bel and disconnect the two terminal lugs from the drain pump 4 Remove screws securing the drain pump to sump then remove drain pump 5 Reverse the above procedure to install Access drain pump Inspect d...

Page 28: ...e 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 B View ottom The work principle Technical data Loca...

Page 29: ...arts B View ottom Access heater 1 Drain off the water in the dishwasher and disconnect the power supply Note Make sure to remove remained water in the dishwasher If not wet the floor 2 Remove bottom b...

Page 30: ...e electromagnetism noise If it is continue electrifying motor the thermal protector will work It will cause E3 error 3 The connector is loose the wash pump can t work It will cause E3 error 4 The roto...

Page 31: ...a 31 0mm 6 Remove the clamp fastening interconnect hose to the lower nozzle 7 Remove the clamp fastening interconnect hose to heater 8 Remove the screw and disconnect the ground wire from the wash pum...

Page 32: ...control the level of water in appliances May also provide flood protection In our production the pressure switch is to control the level in appliance like 83 63 serial May also provide flood protectio...

Page 33: ...ve 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...

Page 34: ...he RE connector shown in below picture then use the multi meter shelf to test resistance between two blue wire the normal resistance is shown in below table 3 I f the resistance is not correct it mean...

Page 35: ...red in appliance it consists of impeller tongue tube and terminal etc When water pass through the flowmeter moving water can rotate magnetic impeller the tongue tube can sense the impeller s magnetic...

Page 36: ...send sound In this case it means something wrong with flowmeter circuit We should check the connection first If the problem hasn t been solved by re connection we should replace the air breaker Acces...

Page 37: ...chine enter into Test Program The appliance will pause and stand by as step 00 At the moment all the indicator which are under control are light and flash with frequence of 2 Hz Then close the door to...

Page 38: ...n pump to be running for 60s 05 The dishwasher pauses 15s 07 Washing pump will be running for 3 minutes 06 Activate fan and inlet valve and feed 3 6liter water into dishwasher 45 cm appliance has no f...

Page 39: ...has been working for 60 minutes but the water temperature detected by NTC hasn t reached desired value E3 will come on When E3 happens the drain pump will run until flowmeter keep motionless for 2 min...

Page 40: ...ntroller The E7 will come on When E7 happens the drain pump will run until flowmeter keep motionless for 2 minutes and all the other loads will be cut off immediately At the same time the buzzer will...

Page 41: ...mer Lower Make a check of Drain Hose OK Is there any water in the Tub Reconnect the wire of Inlet Valve circuit and check again OK Still wrong Replace the Inlet Valve to solve problem Check whether th...

Page 42: ...oned in section 4 High Not Make a check of Anti dry heating Pressure Switch mentioned below Replace Switch to solve the problem Failure OK Make a check of Heater mentioned in section 4 Failure solve t...

Page 43: ...consumer use the proper detergent and rinse Give advice OK Maybe there is a real leakage Improper Correct Do as follows Remove baseboard two side baseboards top panel and two side panels Remove the wa...

Page 44: ...ilure 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 pro...

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