Table of Contents
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SHARP SERVICE MANUAL
PARTS IDENTIFICATION AND SPECIFIC INFORMATION ..............................................
EXTERNAL DIMENSION ...................................................................................................
CAUTION FOR USE ..........................................................................................................
HOW TO USE ....................................................................................................................
WIRING DIAGRAM ............................................................................................................
INSTALLATION ADVICE ....................................................................................................
ELECTRIC WIRE CONNECTIONS ....................................................................................
SHOWER SET ....................................................................................................................
REPLACING METHOD FOR MAIN PARTS .......................................................................
TROUBLESHOOTING .......................................................................................................
CIRCUIT DIAGRAM (PCB-A) .............................................................................................
SERVICE PARTS LIST .......................................................................................................
ELECTRIC WATER HEATER
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
specifi ed should be used.
TABLE OF CONTENTS
SHARP CORPORATION
MODELS
WH-237DP
WH-247D
Page
2
3
3
4
5
5-8
8-10
10
11-16
17
18
19-21
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Summary of Contents for Sharp WH-237DP
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Page 1: Table Of Contents
SHARP SERVICE MANUAL ELECTRIC WATER HEATER MODELS WH-237DP WH-247D 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 specifi ed should be used. -
Page 2: Parts Identification And Specific Information
Display Shower stand Temperature control button ELB button Power SW. button Water volume knob Shower hose Main water valve Breaker angle support SPECIFIC INFORMATION WH-237DP WH-247D Model Rated voltage Rated frequency Power consumptions 4,500 3,500 Water supply system Single point... -
Page 3: External Dimension
ELB lamp indicator (green) are off (to avoid water automatically fl owing when you are not in the bathroom after tap water fl ow resumes). 10. While we using a product if that is stop working immediately as we do not know the cause, please inform the SHARP service center for proceed to repair. -
Page 4: How To Use
HOW TO USE BEFORE USE The installation work is to be done by the Authorized “SHARP” Dealer. The electric home shower unit must earthed. Special skill is required. Never try to repair the unit by yourself. 1. Open the main water valve from the home main water pipe. -
Page 5: Wiring Diagram
1.6. If the control lamp is orange means that the water temperature is automatically controlled. Illuminated : The water temperature will be controlled at the preset level. Flash : Water fl ows too much and the warm water temperature is out of control. If the incoming water temperature upward then press the temperature button and the control lamp will illuminate. -
Page 6: Installation Advice
INSTALLATION ADVICE 1. BEFORE INSTALLATION Please check water pressure before operating this unit. Minimum water pressure : 0.02 MPa (0.21 Bar). Maximum water pressure : 0.34 MPa (3.39 Bar). Please follow the picture below to check water pressure. Water shall overfl ow at the end of the tube within 2.3 meters above the faucet. - Page 7 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 then marked the position in order to drill another 2 holes at the bottom, drill the holes and install the rest of wall anchors then fasten all of 4 screws.
- Page 8 2.6. Installation the shower stand. Ensure that the shower stand located in the level that the top part of the shower head is not higher than the top part of the unit when hanging the shower head. (See in the picture) The angle of shower head holder can adjust into 2 levels.
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Page 9: Electric Wire Connections
1. Be sure to cut off the main power supply switch every time before starting any electrical work Use dual insulated wire with at least 4 square meters cross-section (WH-237DP). Use dual insulated wire with at least 6 square meters cross-section (WH-247D). -
Page 10: Shower Set
3. The ground wire must be connected to grounding point on the unit. Grounding process. Ground rod installation, select the area where moisture stored in the soil and away from fl ood area with no sand or limestone. The diameter of ground rod is not less than 16 millimeters and the length is not less than 240 centimeters. -
Page 11: Replacing Method For Main Parts
REPLACING METHOD FOR MAIN PARTS REMOVE OF SHOWER HOSE 1. Turn out the joint body between the body with the shower hose manually. Never use other tools to avoid breaking plastic parts. Body Shower hose Fig. 20 REMOVE OF BODY 1. - Page 12 REMOVE OF POWER SWITCH BUTTON 1. Remove the body in accordance with “REMOVE OF BODY”. 2. Push the claws of the guide pin by fl at screwdriver and remove the guide pin from the body. 3. Now the power SW. button is free. Body Guide pin Remove the guide pin...
- Page 13 REMOVE OF TRIAC 1. Remove the body in accordance with “REMOVE OF BODY”. 2. Disconnect 3 lead wires from the triac. 3. Remove 2 screws holding to the heater tank ass’y. 4. Now the triac is free. White lead wire Breaker lead wire Brown lead wire Triac lead wire...
- Page 14 REMOVE OF BODY VALVE ASS’Y AND WATER OUTLET 1. Remove the body in accordance with “REMOVE OF BODY”. 2. Remove the reed SW. in accordance with “REMOVE OF REED SWITCH”. 3. Remove the push SW. set in accordance with “REMOVE OF PUSH SWITCH SET”. 4.
- Page 15 REMOVE OF PCB CONTROL 1. Remove the body in accordance with “REMOVE OF BODY”. 2. Pull out all lead wires from the PCB control. 3. Remove 3 screws holding the PCB control. 4. Now the PCB control is free. Screw PCB control Back cover Fig.
- Page 16 REMOVE OF BREAKER 1. Remove the body in accordance with “REMOVE OF BODY”. 2. Remove split pin holding the breaker angle support to the breaker. 3. Remove 2 screws holding 2 breaker lead wires to the breaker. 4. Remove 2 screws holding the breaker to the back cover. 5.
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Page 17: Troubleshooting
TROUBLESHOOTING Problem Possible cause Corrective action Water is not hot. Power switch button is defected. Check or replace the mechanical parts - ELB lamp is not lights up. in power switch button. - Power lamp is not lights up. ELB breaker is cut off or Check electrical leakage point from - Control lamp is not lights up. -
Page 18: Circuit Diagram (Pcb-A)
CIRCUIT DIAGRAM (PCB-A) -
Page 19: Service Parts List
SERVICE PARTS LIST Model WH-237DP PARTS CODE REF. NO DESCRIPTION Q’TY PRICE (FEC) PRINTING & PACKAGING MATERIAL 71P107 INSTRUCTION BOOK 71P100 SET PACKING CASE 71P101 CARTON BOX 71P102 NAME PLATE 71P104 WIRING DIAGRAM STICKER 71J105 LOWER PAD 71J106 UPPER PAD... - Page 20 Model WH-247D PARTS CODE REF. NO DESCRIPTION Q’TY PRICE (FEC) PRINTING & PACKAGING MATERIAL 71P107 INSTRUCTION BOOK 71R100 SET PACKING CASE 71R101 CARTON BOX 71R102 NAME PLATE 71P104 WIRING DIAGRAM STICKER 71J105 LOWER PAD 71J106 UPPER PAD MECHANICAL PARTS 71R200SET BODY SET 71M219 GUIDE PIN...