Sharp WH-A55 Service Manual Download Page 1 | Manualshive

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Sharp WH-A55 Service Manual Download Page 1

SHARP SERVICE MANUAL

ELECTRIC WATER HEATER

MODELS

WH-A55

WH-A57

WH-A58P

WH-HOT HOT

SHARP CORPORATION

TABLE OF CONTENTS

PARTS IDENTIFICATION AND SPECIFIC INFORMATION ......................................................
EXTERNAL DIMENSION   .........................................................................................................
CAUTIONS FOR USE ..............................................................................................................
HOW TO USE ...........................................................................................................................
WIRING DIAGRAM ...................................................................................................................
INSTALLATION ADVICE ..........................................................................................................
SHOWER SET  ...........................................................................................................................
REPLACING METHOD FOR MAIN PARTS ..............................................................................
TROUBLESHOOTING   ..............................................................................................................
CIRCUIT DIAGRAM (PCB CONTROL ASS’Y) .........................................................................
SERVICE PARTS LIST ...............................................................................................................

Page

2
3
3
4
5
5-9
9
   10-14
15
  16
17-21

In the interests of user-safety (Required by safety
regulations in some countries) the set should be restore
to its original condition and only parts identical to those

specified should be used.

1
2
3
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Summary of Contents for WH-A55

Page 1: ...OR USE HOW TO USE WIRING DIAGRAM INSTALLATION ADVICE SHOWER SET REPLACING METHOD FOR MAIN PARTS TROUBLESHOOTING CIRCUIT DIAGRAM PCB CONTROL ASS Y SERVICE PARTS LIST Page 2 3 3 4 5 5 9 9 10 14 15 16 17 21 In the interests of user safety Required by safety regulations in some countries the set should be restore to its original condition and only parts identical to those specified should be used ...

Page 2: ...re Product dimension W x H x D mm IP number Weight kg WH A55 WH A57 WH A58P WH HOT HOT Note Temperature of inlet water is approximately 25 o C and flow rate is 2 3 liters min 1 MPa Megapascal 10 2 kg cm 2 Kilograms Square centimeter Main water valve Shower hose Breaker angle support ELB checker button Shower stand Shower head Main breaker Temperature knob Body Power cord and ground wire Heater lam...

Page 3: ...ter pressure and flow may be reduced and it may cause higher water temperature This is not unusual You should adjust water volume or reset water temperature in appropriate way 7 In the event of thunder and lightning storm turn off the main breaker to prevent the damage that may occur on this appliance 8 Close supervision is necessary in order to check on the water temperature when used by children...

Page 4: ...ter valve from the home main water pipe 2 Open the main breaker switch 3 Push the breaker angle support up to activate the heater electrical system 4 Turn the water volume knob as desired see the water volume knob detail in water temperature adjustment 5 Turn the temperature knob from OFF clockwise to adjust the desired temperature The heater lamp red will be illuminated and the warm water will fl...

Page 5: ...eck water pressure Water shall overflow at the end of the tube within 2 3 meters above the faucet 2 Installation the unit 2 1 Preparing installation area The unit must be mounted to the wall in a vertical position only See in the picture Leave this unit away from the wall for both sides more than 200 millimeters The minimum height of 1 5 meters to the lower edge of the unit must be observed About ...

Page 6: ...r by lifting from the bottom 2 3 Mounting the unit to the wall Drill two 6 millimeters holes in the wall with approximately 25 millimeters in depth Install wall anchors into the holes Screw the top wall anchors leave screw length around 8 10 millimeters and hang the unit on the screw and hang the unit on the screw then marked the position in order to drill another 2 holes at the bottom drill the h...

Page 7: ... Joint Shower hose Connect to the unit Connect to the shower head 3 Piping installation 3 1 Connection point between the unit and the water volume knob and twist the shower hose by hands until tight Do not use any tools during assembly because it may cause the damage to plastic components 3 2 Tighten the connection into the thread located at the bottom of the water volume knob Force gauge do not e...

Page 8: ...t will not work properly It may result in damage to the circuit or may cause danger to the user 4 Electric wire connections 4 1 Before connection the wires please make sure the main breaker is off to cut off power Use dual insulated wire with at least 4 square millimeters cross section Connect electric wire to the unit from the main breaker board through the main breaker which is located the bathr...

Page 9: ...th is not less than 240 centimeters Embed the ground rod at least 30 centimeters in depth from ground surface Grounding process 4 4 Ground resistance must be less than 5 ohm 4 5 After grounding process is completed if ground resistance is higher than 5 ohm additional ground rod must be embedded Leave the additional one away from the previous ground rod at least equal to the length of ground rod Co...

Page 10: ... bottom 3 Now the body is free REMOVE OF BODY REPLACING METHOD FOR MAIN PARTS 1 Turn out the joint body between the body with the shower hose manually Never use other tools to avoid breaking plastic parts REMOVE OF SHOWER HOSE Fig 20 Body Shower hose Body Screw Back cover Fig 21 ...

Page 11: ...dance with REMOVE OF BODY 2 Disconnect reed SW lead wires from the PCB control ass y 3 Remove 2 screws holding the reed SW from the body valve 4 Now the reed SW is free Note Tighten the mounting screws of the reed switch at the specified torque 3 4 kgf cm REMOVE OF REED SWITCH Fig 23 Reed SW lead wire Fig 22 Breaker lead wire Heater tank Screw Triac White lead wire Triac lead wire Brown lead wire ...

Page 12: ...t in accordance with REMOVE OF BODY VALVE ASS Y and WATER OUTLET 3 Remove the screw to L Wire Earth from heater tank ass y 4 Remove the screw holding cable tie from the heater tank support 5 Remove 2 screws holding triac lead wire brown and thermostat lead wire black to the heater tank ass y 6 Remove 2 screws holding the thermostat to the heater tank ass y 7 Now the heater tank ass y is free REMOV...

Page 13: ...lead wire from PCB control ass y 3 Remove the screw holding the PCB control ass y 4 Cut off the volume SW lead wire at the PCB control ass y 5 Disconnect the white lead wire from the triac and the breaker 6 Disconnect lead wire red from the triac 7 Remove 2 screws holding lead wire brown and lead wire black from heater tank 8 Now the PCB control ass y is fee REMOVE OF PCB CONTROL ASS Y Volume SW F...

Page 14: ...er lead wires to the breaker 4 Remove 2 screws holding the breaker to the back cover 5 Now the breaker is free REMOVE OF BREAKER Note For disassembly Cut off the lead wire from PCB control ass y Volume SW Blue lead wire Back cover Screw Split pin Breaker angle support Breaker Breaker lead wire White lead wire Orange lead wire Fig 29 Fig 28 Orange lead wire ...

Page 15: ...valve Reset thermostat Check or replace the volume SW Replace reed SW Replace PCB control ass y Water temperature can not be set PCB control ass y is defected Replace PCB control ass y O ring is clogged Shower ass y is clogged Main water valve open too low Main water valve is closed Water volume is closed Problem Possible cause Corrective action Volume SW is defected Check or replace volume SW Wat...

Page 16: ..._1 A C White NEON LAMP 1 2 3 4 CN1_1 1 2 3 CN2_1 1 2 CN4_1 R3 15K 1 2W small R2 3 3K R4 47 C2 39nF 400V DIAC1 DB3 C1 39 nF 400V R1 100k 1 2 3 CN3 D1 1N4007 R6 47K R7 100k 1 2w s R5 1K ZD1 BZX55C12 Q1 KSP44 1 2 3 4 CN1 1 2 3 CN2 1 2 CN4 R9 100k 1 2W s R8 100k 1 2W s C3 33uF 50v D2 B6M TG35C60 4500W V in 220V ELB black THERMOSTAT 1 MAIN HEATER black brown black L N ...

Page 17: ... FITTING PLATE 1 2 11 7A220 CLAMPING SPRING 2 2 12 71T216ASY BODY VALVE ASS Y 1 2 13 71T215 INSULATION SHEET 1 2 14 71B401SET HEATER TANK SET 1 2 15 7K1361 HEATER TANK SUPPORT 1 2 16 7K137 CABLE TIES 1 2 17 71A2041ASY SHOWER ASS Y 1 2 18 7A901ASY SHOWER HOSE ASS Y 1 2 19 7A910 SHOWER STAND 1 2 20 7A912 O RING FIXER 1 ELECTRIC PARTS 3 1 7A605 BREAKER 220V 30A 1 3 2 71T411 BREAKER LEAD WIRE BLACK 1 ...

Page 18: ... CLAMPING SPRING 2 2 12 71T216ASY BODY VALVE ASS Y 1 2 13 71T215 INSULATION SHEET 1 2 14 71B401SET HEATER TANK SET 1 2 15 7K1361 HEATER TANK SUPPORT 1 2 16 7K137 CABLE TIES 1 2 17 71A2041ASY SHOWER ASS Y 1 2 18 7A901ASY SHOWER HOSE ASS Y 1 2 19 7A910 SHOWER STAND 1 2 20 7D924ASY WATER VOLUME ASS Y 1 2 21 7A912 O RING FIXER 1 ELECTRIC PARTS 3 1 7A605 BREAKER 220V 30A 1 3 2 71T411 BREAKER LEAD WIRE ...

Page 19: ... CLAMPING SPRING 2 2 12 71T216ASY BODY VALVE ASS Y 1 2 13 71T215 INSULATION SHEET 1 2 14 71B401SET HEATER TANK SET 1 2 15 7K1361 HEATER TANK SUPPORT 1 2 16 7K137 CABLE TIES 1 2 17 71C2041ASY SHOWER ASS Y 1 2 18 7A9012ASY SHOWER HOSE ASS Y 1 2 19 7A910 SHOWER STAND 1 2 20 7D924ASY WATER VOLUME ASS Y 1 2 21 7A912 O RING FIXER 1 ELECTRIC PARTS 3 1 7A605 BREAKER 220V 30A 1 3 2 71T411 BREAKER LEAD WIRE...

Page 20: ...220 CLAMPING SPRING 2 2 12 71T216ASY BODY VALVE ASS Y 1 2 13 71T215 INSULATION SHEET 1 2 14 71X301SET HEATER TANK SET 1 2 15 7K1361 HEATER TANK SUPPORT 1 2 16 7K137 CABLE TIES 1 2 17 71A2041ASY SHOWER ASS Y 1 2 18 7A901ASY SHOWER HOSE ASS Y 1 2 19 7A910 SHOWER STAND 1 2 20 7A912 O RING FIXER 1 ELECTRIC PARTS 3 1 7A605 BREAKER 220V 30A 1 3 2 71X411 BREAKER LEAD WIRE BLACK 1 3 3 7K442ASY PCB LAMP AS...

Page 21: ...21 ...

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