Page 1: Table Of Contents
13 Maintenance Guide--------------------------------------------- 26 10.2. Tank Unit Installation-------------------------------------15 14 Troubleshooting Guide --------------------------------------- 28 10.3. Piping Installation-----------------------------------------16 14.1. Error Codes Table---------------------------------------- 28 14.2. Self-diagnosis Method ---------------------------------- 30 © Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2009. Unauthorized copying and distribution is a violation of law.
Page 2 15 Disassembly Instructions ------------------------------------ 46 15.1. Front Grille Removal Procedures -------------------- 46 15.2. Heater Removal Procedures -------------------------- 47 15.3. Main Printed Board Removal Procedures --------- 48 15.4. Control Board Removal Procedure ------------------ 49 15.5. Pressure Relief Valve Procedures ------------------- 50 15.6.
Page 3: Safety Precautions
1 Safety Precautions • Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. • Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. •...
Page 4 1. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire. 2. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, leakage may happen and may cause damage to properties of the user.
Page 5: Specifications
2 Specifications Model Indoor WH-TX30B9E8 Performance Test Condition EUROVENT Phase, Hz Three, 50 Power Supply 9.00 Electric Heater Capacity BTU/h 30700 kJ/h 32400 Volume Rated Pressure Max Input Power 9.20 78 u 2 Pump Input ELCB Specification 25A / 0.03...
Page 6: Features
3 Features • A hot water storage tank, with capacity of 300L • High Efficiency • Compact Design • Highly Durable - Made of clean stainless steel, the tank is designed to provide long lasting durability and toughness and exceptional resistance to rust.
Page 7: Location Of Controls And Components
4 Location of Controls and Components 4.1. Tank Unit 4.1.1. Location of Control...
Page 8 4.1.2. Main Components...
Page 9: Dimensions
5 Dimensions...
Page 10: Water Cycle Diagram
6 Water Cycle Diagram...
Page 11: Wiring Connection Diagram
7 Wiring Connection Diagram...
Page 12: Electronic Circuit Diagram
8 Electronic Circuit Diagram 8.1. Indoor Unit...
Page 13: Printed Circuit Board
9 Printed Circuit Board 9.1. Tank Unit 9.1.1. Main Printed Circuit Board...
Page 14 9.1.2. Surge Printed Circuit Board...
Page 15: Installation Instruction
10 Installation Instruction 10.1. Select The Best Location • Install the Tank Unit in indoor only. • A place where Tank Unit’s operation noise will not cause discomfort to the user. • Must install on a flat horizontal and solid hard surface. •...
Page 16: Piping Installation
10.3. Piping Installation • Please engage a licensed water circuit installer to install this water circuit. • This water circuit must comply with relevant European and national regulations, and local building regulation codes. • Ensure the components installed in the water circuit could withstand water pressure during operation. •...
Page 17 1 Tank Unit To Indoor Unit /Heat Exchanger Unit Piping Installation This Tank Unit is designed for combination with Panasonic Air-to-Water Heatpump System (indoor unit and outdoor unit). If another manufacturer’s indoor unit and outdoor unit are being used in combination with Panasonic Tank Unit, neither optimum operation nor reliability of the system is not guaranteed.
Page 18 3Panel/Floor Heater Piping Installation • It’s strongly recommended to install an expansion vessel (purchase seperately) in the water circuit. Refer Typical piping installation section to locate the expansion vessel. • The capacity of the expansion vessel should be given by formula.
Page 19: Connecting The Power Supply Cord To The Unit
10.4. Connecting The Power Supply Cord To The Unit This section is for authorized and licensed electrician/water system installer only. Work behind the front plate secured by screws must only be carried out under supervision of qualified contractor, installation engineer or service person. How To Take Out Front Plate Please follow the steps below to remove the front plate.
Page 20 Wire Stripping And Connecting Requirement Guiding Outdoor Temperature Sensor Cable 1. Guide the outdoor temperature sensor cable inside the Tank Unit as illustrated below. 2. To avoid cable damaged by sharp edge, the cable must be guided through Bushing. The bushing must be used and must not be removed.
Page 21: Charging And Discharging The Water
10.5. Charging And Discharging The Water Charge The Water 1. Make sure all the piping installations are properly done. 2. Set the water supply valve 9 “OPEN” and water discharge valve qa “CLOSE”. 3. Pull up the lever of pressure relief valve 3. 4.
Page 22: Reconfirmation
10.6. Reconfirmation Be sure to switch off all power supply (Tank Unit power supply, indoor unit power supply, heater power supply etc.) before performing each below checkings. Check Pressure Relief Valve 3 • Check for correct operation of pressure relief valve 3 by turning on the lever to become horizontal. (Refer to figure of “Pressure relief valve 3”).
Page 23: Operation Control
11 Operation Control 11.1. Tank empty abnormality • Every time power ON reset, when heater 1 is started up for first time the unit will monitor heater 1 temperature for 10 minutes. If heater 1 temperature increased continuously, error code H96 will be display. 11.2.
Page 24: Sanitary Water Control
11.4. Sanitary water control 11.4.1. Flow adjustment valve control • There are 3 setting temperature for sanitary water which are 45qC, 50qC and 55qC. • The valve will open according to the temperature different between sanitary water setting temperature and Pump1 return water temperature sensor.
Page 25: Servicing Mode
12 Servicing Mode 12.1. Test Run 1. Fill up the boiler tank with water. For details refer to boiler tanks installation instruction and operation instruction. 2. Set ON to the indoor unit and RCCB. Then, for control panel’s operation please refers to air-to-water Heatpump’s operation instruction.
Page 26: Maintenance Guide
13 Maintenance Guide In order to ensure optimal performance of the unit, checks and inspections on the unit and the field wiring must be carried out regularly. Please request a licensed technician for carry out maintenance job. Before carried out any maintenance or repair work, and removing the front plate of heat exchanger unit, always switch off all power supply (i.e.
Page 27 6. How to release the trapped air in water circuit • Turn up the level to become horizontal. (Refer to figure “Pressure relief valve”). The trapped air will be drained out together with water. After few seconds, turn down the level to stop the water drainage. •...
Page 28: Troubleshooting Guide
14 Troubleshooting Guide 14.1. Error Codes Table Abnormality detection Operation when Item code Display Detection period Cancel condition condition abnormal After ON the operation Tank no water Confirm tank is empty by empty SW, when heater is Total stops Operate error reset SW abnormality boiling detection sequence power ON for first time.
Page 29 Operation when Item code Display Abnormality detection condition Detection period Cancel condition abnormal Stop hot water supply operation (stop hot Hot water supply temperature (TH5) Cancel by reset power water supply pump). above 60qC for 30sec, at condition During hot water supply (not canceled by error Operate flow adjust where water fully open is detected.
Page 30: Self-Diagnosis Method
14.2. Self-diagnosis Method 14.2.1. Heater 2 Temperature Sensor Abnormality (H32) Malfunction Decision Conditions: During startup and operation of heating, the temperatures detected by the heater 2 temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2.
Page 31 14.2.2. Hot Water Supply 1 Temperature Sensor Abnormality (H34) Malfunction Decision Conditions: During startup and operation of heating, the temperatures detected by the hot water supply 1 temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2.
Page 32 14.2.3. Pump 1 Water Return Temperature Sensor Abnormality (H45) Malfunction Decision Conditions: During startup and operation of heating, the temperatures detected by the pump 1 water return temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2.
Page 33 14.2.4. Pump 2 Water Return Temperature Sensor Abnormality (H50) Malfunction Decision Conditions: During startup and operation of heating, the temperatures detected by the pump 2 water return temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2.
Page 34 14.2.5. Flow Adjustment Valve Abnormality (H59) Malfunction Decision Conditions: During startup and operation, the valve origin position detected by the water tank flow adjustment valve is used to determine flow adjustment valve abnormal. Malfunction Caused: 1. Faulty connector connection. 2. Faulty flow adjustment valve. 3.
Page 35 14.2.6. Heater 2 Overheat Abnormality (H71) Malfunction Decision Conditions: During startup and operation (with heater 2 ON), when no power supplies to heater 2. Malfunction Caused: 1. Faulty power supply connector connection. 2. Faulty heater 2 overload protector (OLP). 3. Faulty heater 2 temperature sensor connector connection. 4.
Page 36 14.2.7. Heater 1 Temperature Sensor Abnormality (H72) Malfunction Decision Conditions: During startup and operation of heating, the temperatures detected by the heater 1 temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3.
Page 37 14.2.8. Water Tank-Control Panel Communication Abnormality (H76) Malfunction Decision Conditions: During standby and operation of heating, water tank-control panel error occur. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3. Faulty water tank unit PCB.
Page 38 14.2.9. Outdoor Air Temperature Sensor Abnormality (H80) Malfunction Decision Conditions: During startup and operation of heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3.
Page 39 14.2.10. Hot Water Supply Temperature Sensor Abnormality (H81) Malfunction Decision Conditions: During operation (with hot water supply ON), when temperature difference of 8oC between hot water supply 1 and hot water supply 2 (sub) temperature sensors is detected. Malfunction Caused: 1.
Page 40 14.2.11. Hot Water Supply Temperature Abnormality (H87) Malfunction Decision Conditions: 1. During operation (with hot water supply ON), when hot water supply 1 temperature is above 60qC and flow adjustment valve is fully close. 2. During operation (with hot water supply ON), when hot water supply 1 temperature is above hot water setting temperature +10qC.
Page 41 14.2.12. Hot Water Supply 2 Temperature Sensor Abnormality (H89) Malfunction Decision Conditions: During startup and operation of heating, the temperatures detected by the hot water supply 2 (sub) temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2.
Page 42 14.2.13. Heater 1 Overheat Abnormality (H91) Malfunction Decision Conditions: During startup and operation (with heater 1 ON), when no power supplies to heater 1. Malfunction Caused: 1. Faulty power supply connector connection. 2. Faulty heater 1 overload protector (OLP). 3. Faulty water tank top temperature sensor / heater 1 temperature sensor connector connection. 4.
Page 43 14.2.14. Tank No Water Abnormality (H96) Malfunction Decision Conditions: During startup, when water tank top temperature increment of 6oC is detected by water tank top temperature sensor. Malfunction Caused: 1. Water tank no water. 2. Faulty sensor. 3. Faulty water tank unit PCB. Abnormality Judgment: After 60 seconds startup.
Page 44 14.2.15. Water Tank Top Temperature Sensor Abnormality (F31) Malfunction Decision Conditions: During startup and operation of heating, the temperatures detected by the water tank top temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3.
Page 45 14.2.16. Water Tank Center Temperature Sensor Abnormality (F38) Malfunction Decision Conditions: During startup and operation of heating, the temperatures detected by the water tank center temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3.
Page 46: Disassembly Instructions
15 Disassembly Instructions High voltages are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 15.1. Front Grille Removal Procedures...
Page 47: Heater Removal Procedures
15.2. Heater Removal Procedures...
Page 48: Main Printed Board Removal Procedures
15.3. Main Printed Board Removal Procedures...
Page 49: Control Board Removal Procedure
15.4. Control Board Removal Procedure...
Page 50: Pressure Relief Valve Procedures
15.5. Pressure Relief Valve Procedures...
Page 51: Flow Switch Removal Procedures
15.6. Flow Switch Removal Procedures 15.7. Water Pump Removal Procedures...
Page 52: Technical Data
16 Technical Data 16.1. Pump Characteristic 16.2. Water Tank Sensor Characteristic...
Page 55: Exploded View And Replacement Parts List
17 Exploded View and Replacement Parts List Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
Page 56 Description Qty. WH-TX30B9E8 REMARKS HEATER-COMPLETE (UPPER) CWA34C1023 OVERLOAD PROTECTOR CWA151065 HEATER-COMPLETE (LOWER) CWA34C1026 SENSOR-COMPLETE (HEATER 1&2 TEMP) CWA50C2682 SENSOR-CO. (TANK UPPER & CENTRE TEMP) CWA50C2680 FLOOR WATER PUMP CWB532092 FLOW ADJUSTMENT VALVE CWB65C1013 VALVE BODY-COMPLETE (LOWER) CWB62C1001 HOT WATER COIL-COMPLETE...

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