Page 1 Refer to National, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation, maintenance and/or service of this product. PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit. © Panasonic Corporation 2021.
Page 2: Table Of Contents
TABLE OF CONTENTS PAGE PAGE Safety Precautions ..........4 13.20 Solar Operation (Optional) ......110 13.21 Boiler Bivalent Control ......111 Precaution for Using R32 Refrigerant ....6 13.22 External Room Thermostat Control (Optional) ...
Page 3 Technical Data ..........197 19.1 Operation Characteristics ......197 19.2 Heating Capacity Table ......201 19.3 Cooling Capacity Table ......201 Exploded View and Replacement Parts List .. ................. 202 20.1 Water System ..........
Page 4: Safety Precautions
1. Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before installation of (Mono bloc) Air-to-Water Heatpump system (hereafter referred to as “Mono bloc unit”).  Electrical works and water installation works must be done by licensed electrician and licensed water system installer respectively.
Page 5 WH-MXC09J3E8) or Use approved 20A 4-poles circuit breaker with a minimum contact gap of 3.0mm. (Only applicable for WH-MXC12J9E8, WH-MXC16J9E8) 11. Ensure the correct polarity is maintained throughout all wiring. Otherwise, it will cause electrical shock or fire. After installation, the installer is obliged to verify correct operation of the Mono bloc unit. Check the connection point for water leakage during test run.
Page 6: Precaution For Using R32 Refrigerant
2. Precaution for Using R32 Refrigerant  The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models. However, pay careful attention to the following points: WARNING Since the working pressure is higher than that of refrigerant R22 models, some of the piping and installation and service tools are special.
Page 7 CAUTION Installation (Space)  Must comply with national gas regulations, state municipal rules and legislation. Notify relevant authorities in accordance with all applicable regulations.  Must ensure mechanical connections be accessible for maintenance purposes.  In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction. ...
Page 8 CAUTION 2-8. Checks to electrical devices  Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures.  Initial safety checks shall include but not limit to:- That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking. That there is no live electrical components and wiring are exposed while charging, recovering or purging the system.
Page 9 CAUTION Removal and evacuation  When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to: remove refrigerant ->...
Page 10 CAUTION Recovery  When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.  When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. ...
Page 11: Specifications
3. Specifications Item Unit Refrigerant System Performance Test Condition EN 14511 / EN 14825 POS (EAN) 5025232910717 Condition A35W7 (Ambient/Water) Cooling Capacity 14.50 BTU/h 49500 kcal/h 12470 2.84 Cooling EER kcal/hW 2.44 Condition A7W35 A2W35 (Ambient/Water) Heating Capacity 16.00 16.00 BTU/h 54600 54600...
Page 12 Item Unit Refrigerant System Type Propeller Fan Material Motor Type DC (8-poles) Output Power Cooling: 680 (Top), 720 (Bottom) Fan Speed Heating: 630 (Top), 670 (Bottom) Fin Material Aluminium (Pre Coat) Fin Type Corrugated Fin Heat Exchanger Row x Stage x FPI 2 x 51 x 19 Size (W x H X L) 44 x 1295.4 x 898.8:864.3...
Page 13 Item Unit Water System Performance Test Condition EN 14511 / EN 14825 POS (EAN) 5025232910717 Cooling: 10 / 43 Outdoor Ambient °C (min. / max.) Heating: -20 / 35 Cooling: 5 / 20 Operation Range Heating (Circuit): 20 / 55 (Below Ambient -20°C) * Water Outlet °C (min.
Page 14: Features
4. Features  Inverter Technology - Energy saving  High Efficiency  Compact Design  Environment Protection - Non-ozone depletion substances refrigerant (R32)  Easy to use control panel  Weekly Timer setting  Quality Improvement - Random auto restart after power failure for safety restart operation - Gas leakage protection - Prevent compressor reverse cycle - Inner protector to protect compressor...
Page 15: Location Of Controls And Components
5. Location of Controls and Components Indoor Unit 5.1.1 Remote Controller buttons and display Buttons / Indicator Quick Menu button (For more details, refer to the separate Quick Menu Guide.) Back button Returns to the previous screen LCD Display Main Menu button For function setup ON/OFF button Starts/Stops operation...
Page 16 Display Mode selection AUTO • Depending on the preset outdoor COOL • COOL operation is either turned temperature, the system selects ON or OFF. HEAT or * COOL operation • The unit provides cooling to the mode. system. Auto Heat Auto Cool AUTO •...
Page 17 5.1.2 Initialization Before starting to install the various menu settings, please initiate the Remote Controller by selecting the language of operation and installing the date and time correctly. When power is turned on for the first time, it becomes the setting screen automatically. It can also be set from personal setting of the menu.
Page 18 5.1.4 Menus For user Select menus and determine settings according to the system available in the household. All initial settings must be done by an authorised dealer or a specialist. It is recommended that all alterations of the initial settings are also done by an authorised dealer or a specialist.
Page 19 Menu Default Setting Setting Options / Display Holiday timer To save energy, a holiday period may be set to either turn OFF the system or lower the temperature during the period. Holiday start and end. Date and time OFF or lowered temperature •...
Page 20 Menu Default Setting Setting Options / Display 2 System check Energy monitor Present Present or historical chart of Select and retrieve energy consumption, generation or COP. Historical chart Select and retrieve • COP= Coefficient of Performance. • For historical chart, the period is selected from 1 day/1 week/1year. •...
Page 21 Menu Default Setting Setting Options / Display Backlight Sets the duration of screen backlight. 1 min Backlight intensity Sets screen backlight brightness. Clock format Sets the type of clock display. Date & Time Sets the present date and time. Year / Month / Day / Hour / Min Language ENGLISH / FRANÇAIS / DEUTSCH / Sets the display language for...
Page 22 5.1.5 Menus For installer Menu Default Setting Setting Options / Display 5 Installer setup > System setup Optional PCB connectivity To connect to the external PCB required for servicing. • If the external PCB is connected (optional), the system will have following additional functions: Buffer tank connection and control over its function and temperature.
Page 23 Menu Default Setting Setting Options / Display Buffer tank connection To connect tank to the system and if selected YES, to set T temperature. • The optional PCB connectivity must be selected YES to enable the function. Set T for Buffer •...
Page 24 Menu Default Setting Setting Options / Display Yes Auto To select a bivalent connection to allow an additional heat source such as a boiler to heat- Set outdoor up the buffer tank and domestic temperature for -5°C hot water tank when heatpump turn ON Bivalent connection.
Page 25 Menu Default Setting Setting Options / Display Delay timer to stop the bivalent heat 0:30 source (in hour and minutes). Control pattern Advanced parallel DHW Yes • DHW Tank is activated only after selecting “Yes”. Delay timer to start the bivalent heat 0:30 source (in hour and minutes).
Page 26 Menu Default Setting Setting Options / Display Yes After selecting the tank T ON temperature Set T OFF 5°C temperature Yes After selecting the tank T ON temperature T OFF temperature Set Antifreeze 5°C temperature Yes After selecting the tank T ON temperature T OFF temperature After setting the antifreeze temperature...
Page 27 Menu Default Setting Setting Options / Display Heat-Cool SW 5.19 Force heater 5.20 To turn on Force heater either manually (by default) or automatically. Manual Force defrost 5.21 If auto selection is set, the unit will start defrost operation Manual if long heating hour operate during low outdoor temperature.
Page 28 Menu Default Setting Setting Options / Display Water temp. for heating ON Compensation curve Input the 4 temperature points X axis: -5°C, 15°C (2 on horizontal X Y axis: 55°C, 35°C axis, 2 on vertical Y axis). • Temperature range: X axis: -20°C ~ 15°C, Y axis: See below •...
Page 29 Menu Default Setting Setting Options / Display Heater ON/OFF Delay time for heater ON Delay time for heater 0:30 min to turn on Heater ON/OFF Water temperature for heater ON Setting of water temperature to turn -4°C on from water set temperature.
Page 30 Menu Default Setting Setting Options / Display Water temp. for cooling ON Direct Set temperature for 10°C Cooling ON • If 2 zone system is selected, temperature set point must input for Zone 2. • “Zone 1” and “Zone 2” will not appear on the display if only 1 zone system. T for cooling ON Set T for cooling ON * This setting will not...
Page 31 Menu Default Setting Setting Options / Display Tank heat up time (max) Maximum time for 1:00 heating the tank (in hours and minutes) Tank re-heat temp. Set temperature to -8°C perform reboil of tank water. Sterilization Sterilization may be set for 1 or more days of the week.
Page 32 Menu Default Setting Setting Options / Display Pump down Pump down operation To set the pump down operation. Dry concrete Edit to set the temperature of dry concrete. To dry the concrete (floor, walls, etc.) during construction. ON / Edit Do not use this menu for any other purposes and in period other than during construction...
Page 33 5.1.6 Main Components DETAIL A FOR WH-MXC09J3E8 FOR WH-MXC12J9E8 & WH-MXC16J9E8 Component name Heater assembly Connector name 3 phase RCCB (Main Power) Overload protector (4 pieces) Water inlet Single or 3 phase RCCB (Backup Heater) Pressure relief valve Water outlet...
Page 34: Dimensions
6. Dimensions Mono Bloc Unit <Top View> <Front View> <Side View> <Side View> 1284 318.5 <Back View> Unit: mm...
Page 35: Refrigeration And Water Cycle Diagram
7. Refrigeration and Water Cycle Diagram Outdoor Side Mono bloc Unit Water Pressure Gauge Expansion Liquid Side Valve Shut Shut Strainer Strainer (3-Way Valve) Valve Valve Subcooler Water Inlet Filter Water Pump Refrigerant Temp. Expansion Sensor Valve Water Inlet (Bypass) Temp.
Page 36: Standard System (Optional Pcb Not Connected)
Standard System (Optional PCB not connected) Room Thermo (4 option) Cold Water Supply External Internal Thermostat Thermostat External Nothing DHW Tank Thermistor 3-Way valve 3-Way valve Extra Pump Fan Coil Unit (Heating / Cooling) DHW Tank Air purge valve Panel Heater Unit Mono Bloc (Heating) Unit...
Page 37: Block Diagram
8. Block Diagram FUSE1...
Page 38: Wiring Connection Diagram
9. Wiring Connection Diagram Water System EXTERNAL COMP. SW HEAT/COOL SWITCH SG SIGNAL SOLAR TEMP. SENSOR DEMAND SIGNAL WATER TEMP. ZONE 1 WATER TEMP. ZONE 2 POOL TEMP. SENSOR BUFFER TANK SENSOR ROOM TEMP. ZONE 1 ROOM TEMP. ZONE 2...
Page 39: Refrigerant System
Refrigerant System...
Page 40: Electronic Circuit Diagram
10. Electronic Circuit Diagram 10.1 Water System EXTERNAL COMP. SW HEAT/COOL SWITCH SG SIGNAL SOLAR TEMP. SENSOR DEMAND SIGNAL WATER TEMP. ZONE 1 WATER TEMP. ZONE 2 POOL TEMP. SENSOR BUFFER TANK SENSOR ROOM TEMP. ZONE 1 ROOM TEMP. ZONE 2...
Page 41: Refrigerant System
10.2 Refrigerant System...
Page 42: Printed Circuit Board
11. Printed Circuit Board 11.1 Water System 11.1.1 Main Printed Circuit Board AC2-L2 HT1-L2 AC2-L1 HT1-L1 AC1-L1 AC1-L2 AC2-N2 CN-OLP1 HT1-L3 AC2-L3 AC2-N1 CN-PWR CN-HT CN-PWR2 CN-PWR3 DATA AC1-N AC1-L3 CN-PUMP1 CN-PWR4 CN-FLWSEN CN-TH1 CN-TH3 ACL3 LJP2 CN-CNT...
Page 43 11.1.2 Optional Printed Circuit Board CN205 CN-PWR204 CN204 CN-COMM CN-PWR202 CN206 CN210 CN207...
Page 44: Refrigerant System
11.2 Refrigerant System 11.2.1 Main Printed Circuit Board COM3 AC-WHT02 CN-EV1 CN-RY1 CN-EV2 CN-PSW1 CN-FM103 CN-FM101 AC-BLK02 CN-FM102 CN-TANK CN-RY2 CN-TH2 CN-TH3 CN-TH1 CN-DIS CN-HPS...
Page 45 11.2.2 Noise Filter Printed Circuit Board CN-FM201 CN-FM1 CN-FM2 CN-HT1 CN-FM202 CN-HT2 CN-HOT CN-V1...
Page 46: Installation Instruction
12. Installation Instruction  If an awning is built over the unit to prevent direct 12.1 Mono Bloc Unit sunlight or rain, be careful that heat radiation from the condenser is not obstructed. Attached Accessories  Do not place any obstacles which may cause a Accessories part Qty.
Page 47 12.1.2.1 Disposal of Mono Bloc Unit Drain Water  When a Drain elbow □ is used, please ensure to follow below: The unit should be placed on a stand which is taller than 50mm. Cover the 8 holes (ø20mm) with Rubber cap □ (refer to illustration below) Use a tray (field supply) when necessary to dispose the Mono bloc unit drain water.
Page 48 Isolating Devices Recommended RCD 5 x minimum 1.5 mm 30mA, 4P, type A 5 x minimum 1.5 mm 30mA, 4P, type AC For model WH-MXC16J9E8 Power Supply Cord Cable Size Isolating Devices Recommended RCD 5 x minimum 2.5 mm 30mA, 4P, type A 5 x minimum 1.5 mm...
Page 49 For model WH-MXC12J9E8, the equipment’s Power Supply 1 complies with IEC/EN61000-3-2. For model WH-MXC16J9E8, the equipment’s Power Supply 1 complies with IEC/EN61000-3-12 provided that the short-circuit power Ssc is greater than or equals to 550kVA at the interface point between the user’s supply and the public system.
Page 50 12.1.4.5 Connecting with External Device (Optional)  All connections shall follow to the local national wiring standard.  It is strongly recommended to use manufacturer-recommended parts and accessories for installation.  For connection to main PCB ① Two-way valve shall be spring and electronic type, refer to “Field Supply Accessories” table for details. Valve cable shall be (3 x min 1.5 mm ), of type designation 60245 IEC 57 or heavier, or similarly double insulation sheathed cable.
Page 51 ABCDEFGHJMFLG ABCDEFGHJMFLG ABCDEFGHJMFLG Holder (Clamper) POWE R SUP PLY 2 • For WH-MXC12J9E8 For WH-MXC09J3E8 Power Supply 1 cord and WH-MXC16J9E8 • • Power Supply 2 cord Remote controller cable Optional cables: Optional cables: • • 3-way valve cable External control cable •...
Page 52 CAUTION 240-250V WARNING P OWER SUPPLY 2 ABCDEFGHJMFLG ABCDEFGHJMFLG ABCDEFGHJMFLG ABCDEFGHJMFLG For WH-MXC09J3E8 For WH-MXC12J9E8 and WH-MXC16J9E8 • • Pump zone 1 cable Room sensor zone 1 cable • • Pump zone 2 cable Room sensor zone 2 cable •...
Page 53 12.1.5 Installation of Remote Controller 12.1.5.1 Installation Location  Install at the height of 1 to 1.5 m from the floor (Location where average room temperature can be detected).  Install vertically against the wall.  Avoid the following locations for installation. By the window, etc.
Page 54 For embedded type Preparation: Make 2 holes for screws using a driver. Mount the bottom case to the wall. Mount the top case. • • Pass the wire through the hole Align the claws of the top in the centre of the bottom case. case and then align the claws of the bottom case.
Page 55 CN-CNT cable For WH-MXC12J9E8 For WH-MXC09J3E8 For WH-MXC12J9E8 For WH-MXC09J3E8 (Take care not to and WH-MXC16J9E8 and WH-MXC16J9E8 pinch the cable) Without Optional PCB With Optional PCB 2. Insert a flat head screwdriver into the slot on the top of the adaptor and remove the cover.
Page 56 12.1.7 Charging the Water 12.1.8.2 Check Pressure Relief Valve ⑪  Make sure all the piping installations are properly  Check for correct operation of Pressure Relief done before carry out below steps. Valve ⑪ by turning on the lever to become Open Cabinet front plate ⑯...
Page 57 Protector Refrigerant type : R32 (GWP=675) For WH-MXC09J3E8 and WH-MXC12J9E8 Amount : 1.6kg (1.080 ton CO equivalent) For WH-MXC16J9E8 Amount : 1.8 kg (1.215 ton CO equivalent) 12.1.9 Test Run 1. Before test run, make sure below items have been checked:- Pipework are properly done.
Page 58 12.1.10 Maintenance  In order to ensure optimal performance of the unit, seasonal inspections on the unit, functional check of RCCB, field wiring and piping have to be carried out at regular intervals. This maintenance should be carried out by authorized dealer.
Page 59: Variation Of System
12.2 Variation of System This section introduces variation of various systems using Air-To-Water Heatpump and actual setting method. 12.2.1 Introduce Application Related to Temperature Setting. 12.2.1.1 Temperature Setting Variation for Heating 1. Remote Controller Mono bloc Setting of remote controller Installer setting System setup Optional PCB connectivity - No...
Page 60 Floor heating Connect floor heating or radiator directly to Mono bloc. Install separate external room thermistor (specified by Panasonic) in the room where floor heating is installed. This is an application that uses external room thermistor. There are 2 kinds of circulation water temperature setting method.
Page 61 Connect floor heating and swimming pool to 2 circuits through buffer tank as shown in figure. Install mixing valves, pumps and thermistors (specified by Panasonic) on both circuits. Then, install additional pool heat exchanger, pool pump and pool sensor on pool circuit.
Page 62 Connects pool heat exchanger directly to Mono bloc without using buffer tank. Install pool pump and pool sensor (specified by Panasonic) at secondary side of the pool heat exchanger. Install the remote controller in room where floor heating is installed.
Page 63 This is an application that connects the DHW tank to the Mono bloc through 3-way valve before connect the solar water heater to heat up the tank. DHW tank’s temperature is detected by tank thermistor (specified by Panasonic). Solar panel’s temperature is detected by solar thermistor (specified by Panasonic).
Page 64 Thermistor Floor heating This is an application that connects the buffer tank to the Mono bloc. Buffer tank’s temperature is detected by buffer tank thermistor (specified by Panasonic). This system requires optional PCB (CZ-NS4P). Buffer tank + Solar Setting of remote controller...
Page 65 (It must connect to buffer tank especially when selecting Advanced Parallel setting.) WARNING Panasonic is NOT responsible for incorrect or unsafe situation of the boiler system. CAUTION Make sure the boiler and its integration in the system complies with applicable legislation.
Page 66: How To Fix External Device
Pump Outdoor air AW-A2W-TSOD (Total cable length shall be 30m or Boiler contact / sensor less) Defrost signal Tank sensor Please use Panasonic specified part External control Tank sensor 12.3.1.2 Connection of Optional PCB Room sensor (CZ-NS4P) Outdoor air sensor...
Page 67 12.3.1.3 Recommended External Device Specification Dimensions (mm)  This section explains about the external devices (optional) recommended by Panasonic. Please always ensure to use the correct external device during system installation.  For optional sensor. Buffer tank sensor: PAW-A2W-TSBU Solar sensor: PAW-A2W-TSSO...
Page 68  Please refer to the table below for sensor For optional pump. characteristic of the sensors mentioned Power supply: AC230V/50Hz, <500W above. Recommended part: Yonos 25/6: made by Wilo Temperature (°C) Resistance (kΩ) 5.326 6.523 8.044 9.980 12.443 15.604  For optional mixing valve.
Page 69: System Installation
12.4 System Installation 12.4.1 Remote Controller Outline Name Function Main screen Display information Menu Open/Close main menu Triangle (Move) Select or change item Operate Start/Stop operation Back Back to previous item Quick Menu Open/Close Quick menu Confirm 12:00am,Mon Name Function 10:34am, Mon 1: Function icon Display set function/status...
Page 70 First time of power ON (Start of installation) Initialization 12:00am,Mon Date & time 12:00am,Mon Year/Month/Day Hour : Min When power is ON, ﬁrstly YY/MM/DD/Time initialization setup screen 12 : 00 2020 / 01 / 01 Initializing. screen appears appears (10 sec) Select Conﬁrm ...
Page 71 12.4.2 Installer Setup Optional PCB connectivity Yes/No System setup Only when the selection for Optional PCB is Yes Zone & Sensor 1 Zone system / 2 Zone system Zone settings Capacity select Heater capacity Yes/No Anti freezing Tank connection Yes/No Only when the selection for Tank connection is Yes DHW Capacity Variable/Standard...
Page 72 Force Heater Auto/Manual Force Defrost Auto/Manual Defrost Signal Yes/No T/ Max. Duty Pump ﬂowrate Compensation curve Compensation curve setup Operation setup Heat Water temp. for heating ON Direct Direct temp. setup Heating OFF Temp. setup Outdoor temp. for heating OFF T for heating ON T for heating setup Heater ON/OFF...
Page 73 12.4.3 System Setup 12:00am,Mon System setup 1. Optional PCB connectivity Initial setting: No Optional PCB connectivity If function below is necessary, please purchase and install optional PCB. Zone & Sensor Please select Yes after installing optional PCB. Heater capacity • •...
Page 74 12:00am,Mon System setup 6. DHW Capacity Initial setting: Variable Heater capacity Variable DHW capacity setting normally run with efﬁcient boiling which is energy saving Anti freezing heating. But while hot water usage high and tank water temperature low, variable DHW mode will run with fast heat up which heat up the tank with high heating capacity.
Page 75 12:00am,Mon System setup 11. Bivalent connection Initial setting: No Tank heater Set if heat pump linked with boiler operation. Base pan heater Connect the start signal of the boiler in boiler contact terminal (main PCB). Alternative outdoor sensor Set Bivalent connection to YES. After that, please begin setting according to remote controller instruction.
Page 76 12:00am,Mon System setup 13. Solar connection Initial setting: No Alternative outdoor sensor Set when solar water heater is installed. Bivalent connection Setting include items below. External SW Set either buffer tank or DHW tank for connection with solar water heater. ①...
Page 77 12:00am,Mon System setup 17. External Compressor SW Initial setting: No External Error signal Set when external compressor SW is connected. Demand control SW is connected to external devices to control power consumption, Open Signal will stop compressor’s operation. (Heating operation etc. are not cancelled). SG ready External compressor SW (NOTE) Does not display if there is no Optional PCB.
Page 78 12.4.4 Operation Setup Heat 24. Water temp. for heating ON Initial setting: compensation curve 55°C Decide temperature of 4 points as shown Set target water temperature to operate heating operation. Hot water temperature in diagram Compensation curve: Target water temperature change in conjunction with outdoor ambient temperature change.
Page 79 Auto Heat Outdoor temp. rising 30. Outdoor temp. for (Heat to Cool) Initial setting: 15°C Set outdoor temp that switches from heating to cooling by Auto setting. Cool Setting range is 5°C ~ 25°C 15°C Timing of judgement is every 1 hour Heat Outdoor temp.
Page 80 12.4.5 Service Setup 12:00am,Mon Service setup 36. Pump maximum speed Initial setting: Depend on model Flow rate Max. Duty Operation Normally setting is not necessary. Please adjust when need to reduce the pump sound etc. Air Purge 88:8 L/min 0xCE Besides that, it has Air Purge function.
Page 81: Service And Maintenance
12.5 Service and Maintenance Custom menu If forget Password and cannot operate remote controller Press for 5 sec. Setting method of Custom menu Password unlock screen appears, press Conﬁrm and it shall reset. Password will become 0000. Please reset it again. Custom menu 12:00am,Mon (NOTE) Only display when it is locked by password.
Page 82: Operation And Control
13. Operation and Control 13.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.
Page 83 13.1.4 Target Water Temperature Setting 13.1.4.1 Target Water Temperature Control of Standard System (Optional PCB not connected) There are 2 types of temperature control selection which are Compensation and Direct.  Temperature control type selection by installer: Compensation : WLo, WHi, ODLo, ODHi can be set at installer menu. Direct : Direct Water Temperature Set ...
Page 84 Compensation Type: (Operation under Heat Mode and Cool Mode)  The set temperature defines the parameters for the ambient (Outdoor temperature) dependent operation of the unit. The water temperature is determined automatically depending on the outdoor temperature. Default setting is the colder outdoor temperature will result in warmer water and vice versa.
Page 85 13.1.5 Target Water Temperature at Extension System (Optional PCB is connected) Target water temperature is calculated as below.  Heat Mode: When buffer tank selection is “YES:” Target water temperature = Target buffer tank temperature + [2°C] When buffer tank selection is “NO” ...
Page 86 B (shift temperature) value is depend on the room sensor selection at remote controller as below table: B (Shift Temp.) B shift value depend on the room sensor selection at remocon as table below Sensor selection Water temperature B = 0 External Room thermostat B = 0 Cool Mode:...
Page 87 B (shift temperature) value is depend on the room sensor selection at remote controller as below table: B (Shift Temp.) B shift value depend on the room sensor selection at remocon as table below Sensor selection Water temperature B = 0 External Room thermostat B = 0 Cool Mode:...
Page 88  Buffer Tank connection select "NO" & One zone system is select  This zone room temperature control by either one of the 4 room sensor (Room Th, Int/Ext Room Thermostat, Water temp.)  Target Zone Water Temperature calculate base on selected temperature control type (Compensation or Direct) and selected room sensor.
Page 89  Control details: To enable the unit to operate either heat or cool mode automatically, heat to cool set temperature and cool to heat set temperature can be set by control panel. Automatic operation is judged based on control panel setting temperature and outdoor ambient temperature.
Page 90 Tank Thermo ON Case 1: Internal Tank Heater is select and Tank Heater ON Tank temperature < Tank set temperature + R/C (Tank re-heat temperature) Case 2: Tank Heater select OFF OR External Heater is select Tank temperature < Tank water set temperature + R/C (Tank re-heat temperature) * When tank thermo ON, water pump will ON for 3 minutes then only heat pump turn ON.
Page 91 Heat pump OFF condition at Tank Mode Tank temperature > tank water set temperature continuously for 20 seconds after heat pump thermos OFF due to water thermo. (Heat pump turn OFF but water pump continue ON and room heater turn ON to achieve tank set temperature) OR Tank temperature >...
Page 92 During Tank heat-up interval  Tank interval is the first mode running when heat + tank mode is select.  Switch to room interval only when tank achieve tank thermo OFF OR tank heat-up interval timer is complete.  Heat pump operates according to normal tank mode operation. Room heater control: During heating heat-up interval ...
Page 93 During tank heat-up interval  Tank interval is the first mode running when the cool + tank mode is select.  Switch to room interval only when tank achieve tank thermo OFF OR tank heat-up interval timer is complete.  Heat pump operates according to normal tank mode operation.
Page 94: Water Pump
13.2 Water Pump 13.2.1 Water Pump Control  Once the indoor unit is ON, the water pump will be ON immediately and no error judgment for 70 seconds. However, during this 70 seconds operation, if there is any abnormality cause at outdoor or malfunction, the compressor should be OFF immediately and restart delay after 3 minutes.
Page 95 1) P-Q graph for different pump HEX duty P-Q (WH-MXC16J9E8) Max duty C5 16kW raed duty 94 Min duty 46 Water Flow Rate, Q (L/min) ...
Page 96 13.2.2 Zone Water Pump Control Purpose:  Water pump install at each zone to circulate the water inside each zone during buffer tank connection selected “YES” or 2 zone systems. Content:  AC type water pump install for this zone water pump control. When optional PCB connected, 230V output will drive this zone pump.
Page 97 Zone Pump Control during Anti-Freeze Zone pump control during Zone Anti-Freeze Control:  When Zone Anti-Freeze Flag=1, Zone Pump Turn ON.  When Zone Anti-Freeze Flag=0, Zone Pump Turn OFF. Zone pump control during Indoor Anti-Freeze Control:  Zone pump only ON/OFF if the Extension PCB connected and Buffer Tank select "NO" condition When Indoor Anti-Freeze flag=1, Zone Pump Turn ON When Indoor Anti-Freeze flag=0, Zone Pump Turn OFF * Pool Water Pump will not affected by both Indoor anti-freeze control or zone anti-freeze control.
Page 98: Indoor Unit Safety
13.3 Indoor Unit Safety 13.3.1 Indoor Unit Safety Control When water pump is ON, the system will start checking flow switch status (ON/OFF). If the flow switch ON for 10 seconds, the system will check on the water inlet temperature for 10 seconds. If the water inlet temperature not exceeds 80°C, the water pump shall be continuously running with normal mode.
Page 99: Indoor Back-Up Heater Control
13.6 Indoor Back-Up Heater Control 13.6.1 Indoor Electric Heater Control Normal Heating Mode Heater On condition: a. Heater switch is ON b. After Heatpump thermo ON for Remote Control Set Delay Time mins c. After water pump operate [1] minute d.
Page 100: Tank Heater Control
However, room heater keeps ON if indoor electric heater control activate. 13.7 Tank Heater Control 13.7.1 Tank Heater Remote Control Setting Tank heater selection: External: - Booster Heater use to heat up tank when select external Internal: - Backup Heater use to heat up tank when select internal * When select External Tank Heater, Heater Delay ON Timer need to set.
Page 101 13.7.2 External Heater Control at Tank Side Heating operation condition: Heater OFF Tank set temperature + Tank set temperature + Tank Re-Heat Temp. + [ -1°C] [0°C] Heater ON  Tank heater Turn On condition: External Heater selected for Tank heater by remote controller. Tank Heater select ON by user.
Page 102: Base Pan Heater Control (Optional)
13.7.3 Internal Heater Control at Tank Mode  Internal heater turn On condition: Internal Heater select for Tank heater by remote controller Tank Heater select ON by user. Backup Heater Enable Tank Temperature < Tank Set Temperature Heat Pump Thermo OFF 20 minutes from previous heater off.
Page 103: Heater Turn On/Off Priority Control
13.9 Heater Turn ON/OFF priority Control Purpose: To allow only one heater between room and tank heater to turn ON at the same time due to both heater power supplies is sharing the same ELCB. Prohibit two heater sources to turn ON at the same time to avoid overcurrent.
Page 104 * For tank mode condition, If internal heater selected backup heater will turn ON to boil up tank water. If external heater selected, booster heater will turn ON to boil up tank water regardless of tank heater selection Room Side: (Heat Mode) 1) When force heater mode start condition fulfilled, turn ON water pump and turn ON backup heater follow below control.
Page 105: Powerful Operation
13.11 Powerful Operation Powerful mode is use to increase the capacity of heat pump to achieve higher target temperature. Powerful mode is applicable when heat mode is operating. Remote control setting: On quick menu of remote control, there is 4 options of powerful mode can be select. ...
Page 106: Sterilization Mode
13.13 Sterilization Mode  Purpose: To sterilize water tank by setting the required boiling temperature.  Remote control setting Days for sterilization function to start can be select. Time of selected day to start sterilization function. Boiling temperature (External heater is 55°C ~ 75°C, Internal heater is 55°C ~ 65°C) Maximum operation time is 5 minutes to 1 hour.
Page 107: Alternative Outdoor Ambient Sensor Control
13.15 Alternative Outdoor Ambient Sensor Control Purpose of the Alternative Outdoor Ambient Sensor:  It is some possibility that the air to water heat pump unit will install at a location where the original ambient sensor is expose to direct sunlight. Therefore, another optional ambient sensor can be connect to indoor PCB and locate at new and better reading location to improve the heat pump performance.
Page 108: Smart Dhw Mode
13.17 SMART DHW mode Panasonic All In One model provide the option to choose STANDARD DHW Mode or SMART DHW Mode for Tank Heat Up according to requirement. SMART DHW mode comparatively consume lower tank heat up power but longer re-heat time than STANDARD DHW Mode.
Page 109: Anti Freeze Control
13.19 Anti Freeze Control  Anti freeze protection control menu can be set YES or NO by control panel.  In heatpump system, there are 3 types of anti freeze control: 1. Expansion tank anti-freeze control  Expansion tank anti freeze heater ON condition: Outdoor ambient temp.
Page 110: Solar Operation (Optional)
13.20 Solar Operation (Optional) 13.20.1 Solar Operation: Solar function:  This function allow user to control the solar pump to operate depend on the solar sensor reading compare to the tank installed. Solar pump will circulate the hot water energy store at solar panel to heat up the DHW Tank or Buffer Tank.
Page 111: Boiler Bivalent Control
13.20.2 Solar Operation Control  Solar function can only be activate if the solar function selection “YES” from remote control. To achieve hot water from solar panel, indoor need to control the solar pump and circulate hot water from solar panel. Under normal case: Solar pump start condition: ...
Page 112 ** However indoor water pump can operate when Anti-freeze control condition fulfilled. Boiler signal turn OFF and heat pump and water pump turn ON when:  Outdoor ambient > Outdoor Ambient Set + [2°C] OR  Boiler prohibit flag = 1 ...
Page 113: External Room Thermostat Control (Optional)
SG ready Control Mode: Using same SG ready from Sub Board input to control boiler ON/OFF output. * When this SG ready is select for bivalent control, default SG ready function will change to control bivalent output. Remote controller can set the External Pump ON/OFF like bivalent alternative mode. Control Content Indoor will follow the SG ready bit input to control ON/OFF heat pump and boiler 00 : Heat pump OFF, Boiler OFF...
Page 114: Three Ways Valve Control
Wire Connection and thermo characteristic of Siemen RAA20: Setting L/Y1 (H) Heat Thermo L/Y2 (C) Cool Thermo Set Temp < Actual Temp Open Circuit Short Circuit Set Temp > Actual Temp Short Circuit Open Circuit Indoor Unit L (label) Siemen RAA20 Cooling Y1 (label) Heating...
Page 115: Two Ways Valve Control
* Recommended Parts : SFA 21/18 (Siemens) 13.25 External OFF/ON Control  Communication circuit between indoor unit and external controller is as per below. External Controller mico Panasonic CN-THERMO  Maximum length of communication cable is 50 meter.  Control content: External Control Switch...
Page 116: External Compressor Switch (Optional Pcb)
Remocon Screen Display and Control Detail: 10:34am , Mon Turned off by external switch. ˚ CANCEL ˚ ˚ ˚ REMOTE CONTROLLER REMOTE CONTROLLER SIGNA EXTERNA CONTROLLER SWITCH UNIT When External SW connection select "YES" from remocon installer menu:  Heating or Cooling system will operate normally if the External Switch signal is ON. ...
Page 117: Heat/Cool Switch (Optional Pcb)
 Heater ON/OFF function Purpose:  Heater ON/OFF function is use to turn OFF the heater (backup heater & booster heater) when there is energy or electric current limitation. Heat pump and other optional function still can operate. Control detail: ...
Page 118: Sg Ready Control (Optional Pcb)
13.28 SG Ready Control (Optional PCB) Purpose:  To set ON/OFF of heat pump and target temperature by digital input of third party device if necessary in field. Optional PCB Remote Station BIT1 BIT2 Remote control setting For this function, following items need to be set on R/C (installer menu) – ...
Page 119 If Buffer selection is “YES” Room side New Target Buffer tank temperature = Current Target Buffer Tank Temperature * Remote Control setting (" capacity 1) % * Max Min regulation is follow Target Buffer tank temperature control specification ** No change of Target zone water temperature, only set higher buffer tank temperature. DHW Tank side New Tank Set Temperature = Tank Set Temperature * Remote Control setting for DHW ("Capacity 1) % * (Max regulation depend on the tank max setting limit)
Page 120: Demand Control (Optional Pcb)
13.29 Demand Control (Optional PCB) Remote control setting:  When Optional PCB connection select 'YES", Demand Control function can select "YES" or "NO". Purpose:  After the demand control select YES, below control will activated. 0-10V Demand control 0-10V Demand control ...
Page 121: Dry Concrete
13.31 Dry Concrete  Purpose: Provide heat to floor heating panel and dry the wet concrete during installation.  Setting condition: Dry concrete parameter can be set through remote control under system setup. Parameters are possible to set up to 99 days with different target set temperature ...
Page 122: Protection Control
14. Protection Control 14.1 Protection Control for All Operations 14.1.1 Time Delay Safety Control The compressor will not start for three minutes after stop of operation. 14.1.2 30 Seconds Forced Operation Once the compressor starts operation, it will not stop its operation for 30 seconds. However, it can be stopped using control panel at indoor unit.
Page 123 14.1.5 High Pressure Sensor Control  Purpose: - To protect the system operation.  Detection period: - After compressor on for 1 minute.  Detection conditions: - When abnormal high voltage detection, 5 V or when open circuit detection 0V for 5 seconds continuously. ...
Page 124: Protection Control For Heating Operation
14.2 Protection Control for Heating Operation 14.2.1 Outdoor Air Temperature Control The maximum current value is regulated when the outdoor air temperature rises above 14°C in order to avoid compressor overloading. 14.2.2 Deice Operation When outdoor pipe temperature and outdoor air temperature is low, deice operation start where outdoor fan motor stop.
Page 125 Deice operation time diagram a. Deice mode 1 control: Free Free Compressor Four way valve ID pump OD fan Free Free Expansion valve Free max 9 minutes 30 seconds deice 1 b. Deice mode 2 control: Deice mode 2 Normal Heating Deice operation...
Page 126: Protection Control For Cooling Operation
14.3 Protection Control for Cooling Operation 14.3.1 Outdoor Air Temperature Control  The Compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.  This control will begin 1 minute after the compressor starts. ...
Page 127: Servicing Mode
15. Servicing Mode 15.1 Expansion Vessel ⑦ Pre 15.2 Maintenance Pressure Checking  In order to ensure optimal performance of the unit, seasonal inspections on the unit, functional check [Upper limit water volume of the system] of RCCB, field wiring and piping have to be The Mono bloc unit has a build-in Expansion Vessel carried out at regular intervals.
Page 128: Pump Down Procedures
15.3 Pump Down Procedures Refer below steps for proper pump down procedure. Press Press SW & scroll to “Pump down” [Screen 4]...
Page 129: How To Adjust Pump Speed
15.4 How To Adjust Pump Speed 11 : 00am, M on Press & scroll to “Installer setup” [Screen 4] - Press SW to select & conﬁrm maximum duty. (Range: 0 x40~0xFF) [Screen 5] - Range (0.1~99.9)L/min [Screen 6] Press SW to select & conﬁrm operation NOTE: 1.
Page 130: How To Unlock Cool Mode
15.5 How To Unlock Cool Mode Operation must be OFF Press ( ) SW’s continuously for 5secs Display latest status retrieved from EEPROM...
Page 131: Eeprom Factory Default Data Setup Procedure
15.6 EEPROM Factory Default Data Setup Procedure - EEPROM default data setup is only possible during initialization process. - Press simultaneously for 5secs continuously, initialization process will stop & EEPROM default data setup process will start. During EEPROM default data setup process, display should be as shown below. 0.2s Later 0.2s...
Page 132: Dry Concrete Setup
15.7 Dry Concrete Setup 11 : 00am, M on Press & scroll to “Installer setup” [Screen 4] [Screen 5] [Screen 6] Once ‘ON’ is confirm, stage 1 setup will start Every day stage will increment with its respective setup Next Page...
Page 133 - Press button to select no. of stages. - Press to store latest status. - Press button, display will return to [Screen 6]. - If suppose to select 10 stages, then setup will start from stage 1/10. - Press button to select set temperature. - Press button to store latest status.
Page 134: Maintenance Guide
16. Maintenance Guide In order to ensure safety and optimal performance of the unit, seasonal inspections on the unit, functional check of RCCB/ELCB, field wiring and piping have to be carried out at regular intervals. This maintenance should be carried out by authorized dealer.
Page 135 Expansion vessel [Upper limit water volume of the system] The Mono bloc unit has a build-in Expansion Vessel with 10 L air capacity and initial pressure of 1 bar. Without antifreeze agent condition Total amount of water in the system should be below 200 L. If the total amount of water is more than 200 L, please add expansion vessel (field supply).
Page 136: Maintenance Menu
Reset overload protector Overload Protector a serves the safety purpose to prevent the water over heating. When the Overload Protector a trip at high water temperature, take below steps to reset it. a. Take out the cover. b. Use a test pen to push the centre button gently in order to reset the Overload Protector. c.
Page 137 16.1.4 Specifications 16.1.4.1 Specifications of Fresh Water was Heat Transfer Medium in Brazed Heat Exchanger Parameter Quality Limits for Tap Water on the Secondary Side Temperature Below 60°C 7 to 9 Alkalinity 60mg/I <HCO <300mg/I Conductivity < 500μS/cm Hardness , Mg ] / [HCO ] >...
Page 138: Troubleshooting Guide
17. Troubleshooting Guide 17.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan.
Page 139: Relationship Between The Condition Of The Air-To-Water Heatpump Indoor And Outdoor Units And Pressure And Electric Current
17.2 Relationship between the Condition of the Air-to-Water Heatpump Indoor and Outdoor Units and Pressure and Electric Current Heating Mode Cooling Mode Condition of the Air-to-Water Heatpump Low Pressure High Pressure Electric current Low Pressure High Pressure Electric current indoor and during operation during operation outdoor units...
Page 140: Breakdown Self Diagnosis Function
17.3 Breakdown Self Diagnosis Function 17.3.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  When abnormality occur during operation, the system will stop operation, and OFF/ON control panel LED will blink and error code will display on the control panel. ...
Page 141 Press button and select “System Check” Press SW to select [Screen 4] “Error history” Display last 4 error retrieved from EEPROM...
Page 142: Error Codes Table
17.4 Error Codes Table Diagnosis display Abnormality/Protection control Abnormality judgement Primary location to verify No abnormality detected — —  Indoor/outdoor connection wire  Indoor/outdoor PCB Indoor/Outdoor capacity unmatched 90s after power supply  Specification and combination table in catalogue ...
Page 143 Diagnosis display Abnormality/Protection control Abnormality judgement Primary location to verify  Outdoor high pressure sensor  Water pump or water leakage Outdoor high pressure overload  Clogged expansion valve or strainer — protection  Excess refrigerant  Outdoor PCB  Outdoor high pressure sensor ...
Page 144: Self-Diagnosis Method
17.5 Self-diagnosis Method 17.5.1 Connection Capability Rank Abnormality (H12) Malfunction Decision Conditions: During startup operation of cooling and heating, the capability rank of indoor checked by the outdoor is used to determine connection capability rank abnormality. Malfunction Caused: Wrong model interconnected. Wrong indoor unit or outdoor unit PCB (main) used.
Page 145 17.5.2 Compressor Tank Temperature Sensor Abnormality (H15) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the compressor tank temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main).
Page 146 17.5.3 Water Pump Abnormality (H20) Malfunction Decision Conditions: During startup and operation of cooling and heating, the rotation speed detected by the IPM of water pump motor during water pump operation is used to determine abnormal water pump (feedback of rotation > 6,000rpm or < 700rpm).
Page 147 17.5.4 Indoor Refrigerant Liquid Temperature Sensor Abnormality (H23) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor refrigerant liquid temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor.
Page 148 17.5.5 Service Valve Error (H27) Malfunction Decision Conditions: During cooling operation, when:- [a] Indoor refrigerant pipe temperature at compressor startup - present indoor refrigerant pipe temperature < 2°C [b] Present high pressure - high pressure at compressor startup < 5kg/cm **Judgment only for first time cooling operation and not during pump down operation.
Page 149 17.5.6 Abnormal Solar Sensor (H28) Malfunction Caused: Faulty connector connection. Faulty solar sensor. Faulty indoor sub PCB. Abnormality Judgment: Continue for 5 seconds. For safety reason and to prevent Abnormal solar sensor component breakdown, always switch Caution off the power before remove and connect the component.
Page 150 17.5.7 Abnormal Swimming Pool Sensor (H31) Malfunction Caused: Faulty connector connection. Faulty swimming pool sensor. Faulty indoor sub PCB. Abnormality Judgment: Continue for 5 seconds. For safety reason and to prevent Abnormal swimming pool sensor component breakdown, always switch Caution off the power before remove and connect the component.
Page 151 17.5.8 Abnormal Buffer Tank Sensor (H36) Malfunction Caused: Faulty connector connection. Faulty buffer tank sensor. Faulty indoor sub PCB. Abnormality Judgment: Continue for 5 seconds. For safety reason and to prevent Abnormal buffer tank sensor component breakdown, always switch Caution off the power before remove and connect the component.
Page 152 Brand code not match component breakdown, always switch Caution off the power before remove and connect the component. ● Use only Panasonic units. Check the brand of indoor and outdoor unit both Panasonic? ● Change to Panasonic unit. Change PCB outdoor...
Page 153 17.5.10 Compressor Low Pressure Protection (H42) Malfunction Decision Conditions: During operation of heating and after 5 minutes compressor ON, when outdoor pipe temperature below -37°C or above 26°C is detected by the outdoor pipe temperature sensor. Malfunction Caused: Dust accumulation on the outdoor unit heat exchanger. Air short circuit at outdoor unit.
Page 154 17.5.11 Abnormal Zone 1 Sensor (H43) Malfunction Caused: Faulty connector connection. Faulty buffer tank sensor. Faulty indoor sub PCB. Abnormality Judgment: Continue for 5 seconds. For safety reason and to prevent Abnormal zone 1 sensor component breakdown, always switch Caution off the power before remove and connect the component.
Page 155 17.5.12 Abnormal Zone 2 Sensor (H44) Malfunction Caused: Faulty connector connection. Faulty buffer tank sensor. Faulty indoor sub PCB. Abnormality Judgment: Continue for 5 seconds. For safety reason and to prevent Abnormal zone 2 sensor component breakdown, always switch Caution off the power before remove and connect the component.
Page 156 17.5.13 Water Flow Switch Abnormality (H62) Malfunction Decision Conditions: During operation of cooling and heating, the water flow detected by the indoor water flow switch is used to determine water flow error. Malfunction Caused: Faulty water pump. Water leak in system. Faulty connector connection.
Page 157 17.5.14 Outdoor High Pressure Abnormality (H64) Malfunction Decision Conditions: During operation of cooling and heating, when the outdoor high pressure sensor output signal is 0 Vdc or 5 Vdc. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue 4 times in 20 minutes.
Page 158 Check if external water pump is Use buffer tank to separate external water used and it is directly installed to pump from air-to-water the air-to-water heatpump indoor unit circuit. (without buffer heatpump indoor unit Panasonic External Air-to-Water circuit. tank) Pump Heatpump Indoor Unit ●...
Page 159 17.5.16 Abnormal External Thermistor 1 (H67) Malfunction Caused: Faulty connector connection. Faulty room temperature zone 1 sensor. Faulty indoor sub PCB. Abnormality Judgment: Continue for 5 seconds. For safety reason and to prevent Abnormal external thermistor 1 component breakdown, always switch Caution off the power before remove and connect the component.
Page 160 17.5.17 Abnormal External Thermistor 2 (H68) Malfunction Caused: Faulty connector connection. Faulty room temperature zone 2 sensor. Faulty indoor sub PCB. Abnormality Judgment: Continue for 5 seconds. For safety reason and to prevent Abnormal external thermistor 2 component breakdown, always switch Caution off the power before remove and connect the component.
Page 161 17.5.18 Indoor Backup Heater OLP Abnormality (H70) Malfunction Decision Conditions: During operation of indoor backup heater, when no power supplies to indoor backup heater or OLP open circuit. Malfunction Caused: Faulty power supply connector connection. Faulty connector connection. Faulty indoor backup heater overload protector (OLP). Faulty indoor unit PCB (main).
Page 162 17.5.19 Tank Temperature Sensor Abnormality (H72) Malfunction Decision Conditions: When tank connection is set to ON, the temperatures detected by the tank temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty indoor unit PCB (main). Abnormality Judgment: Continue for 5 seconds.
Page 163 17.5.20 PCB Communication Error (H74) Malfunction Decision Conditions: When External PCB connection is select “YES” and no communication with External PCB micon for 10 seconds and above. Malfunction Caused: Faulty connector connection. Faulty Indoor PCB. Faulty indoor sub PCB. Abnormality Judgment: After 1 minute operation started.
Page 164 17.5.21 Indoor-Control Panel Communication Abnormality (H76) Malfunction Decision Conditions: During standby and operation of cooling and heating, indoor-control panel error occur. Malfunction Caused: Faulty connector connection. Faulty control panel. Faulty indoor unit PCB (main). For safety reason and to prevent component breakdown, Troubleshooting: always switch off the power before remove and connect the component.
Page 165 17.5.22 Indoor/Outdoor Abnormal Communication (H90) Malfunction Decision Conditions: During operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused: Faulty outdoor unit PCB (main). Faulty indoor unit PCB (main). Indoor-outdoor signal transmission error due to wrong wiring.
Page 166 17.5.23 Tank Booster Heater OLP Abnormality (H91) Malfunction Decision Conditions: During operation of tank booster heater, and tank booster heater OLP open circuit. Malfunction Caused: Faulty connector connection. Faulty tank booster heater overload protector (OLP). Faulty indoor unit PCB (main). Abnormality Judgment: Continue for 60 seconds.
Page 167 17.5.24 Unspecified Voltage between Indoor and Outdoor (H95) Malfunction Decision Conditions: The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused: Insufficient power supply. Faulty outdoor unit PCB (noise filter/main). For safety reason and to prevent component breakdown, Troubleshooting: always switch off the power before remove and connect the component.
Page 168 17.5.25 Outdoor High Pressure Protection (H98 / F95) Malfunction Decision Conditions: During operation of cooling / heating, when pressure 4.2 MPa and above is detected by outdoor high pressure sensor. Malfunction Caused: Faulty water pump. Insufficient water flow rate in system. Water leak in system.
Page 169 For safety reason and to prevent component breakdown, Troubleshooting: always switch off the power before remove and connect the component. Caution Operation Mode Cooling Check the outdoor unit fan motor operation. Check the dust accumulation on the outdoor unit heat exchanger. Replace the outdoor unit Is the outdoor unit fan fan motor and/or outdoor...
Page 170 17.5.26 Indoor Freeze-up Protection (H99) Malfunction Decision Conditions: During anti-freezing control in cooling operation, when the indoor refrigerant liquid temperature < 0°C. Malfunction Caused: Faulty water pump. Insufficient water flow rate in system. Water leak in system. 2 way valve partially closed. Clogged expansion valve or strainer.
Page 171 17.5.27 Outdoor High Pressure Switch Activate (F12) Malfunction Decision Conditions: During operation of cooling and heating, when pressure 4.3 MPa and above is detected by outdoor high pressure switch. Malfunction Caused: Dust accumulation on the outdoor unit heat exchanger. Air short circuit at outdoor unit. Faulty water pump.
Page 172 17.5.28 Compressor Rotation Failure (F14) Malfunction Decision Conditions: A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused: Compressor terminal disconnect. Faulty outdoor unit PCB (main). Faulty compressor. Abnormality Judgment: Continue 4 times in 20 minutes. For safety reason and to prevent component breakdown, Troubleshooting: always switch off the power before remove and connect the component.
Page 173 17.5.29 Outdoor Fan Motor (DC Motor) Mechanism Locked (F15) Malfunction Decision Conditions: The rotation speed detected by the Hall IC of the fan motor during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550 rpm or < 20 rpm). Malfunction Caused: Operation stop due to short circuit inside the fan motor winding.
Page 174 17.5.30 Input Over Current Detection (F16) Malfunction Decision Conditions: During operation of cooling and heating, when outdoor current exceeding the following table is detected by the current transformer (CT) in the outdoor unit PCB. WH-MXC09J3E8 WH-MXC12J9E8 WH-MXC16J9E8 Current 12.8A 12.8A 17.4A Malfunction Caused: Excessive refrigerant.
Page 175 17.5.31 Compressor Overheating (F20) Malfunction Decision Conditions: During operation of cooling and heating, when temperature above 117°C is detected by the outdoor discharge pipe temperature sensor. Malfunction Caused: Faulty outdoor discharge pipe temperature sensor. 2/3 way valve closed. Refrigerant shortage (refrigerant leakage). Clogged expansion valve or strainer.
Page 176 17.5.32 IPM Overheating (F22) Malfunction Decision Conditions: During operation of cooling and heating, when temperature 95°C is detected by the outdoor IPM temperature sensor. Malfunction Caused: Faulty outdoor unit fan motor. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue 4 times in 30 minutes. For safety reason and to prevent component breakdown, Troubleshooting: always switch off the power before remove and connect the component.
Page 177 During operation of cooling and heating, when outdoor DC current exceeding the following table is detected by the IPM DC Peak sensing circuitry in the outdoor unit PCB (main). WH-MXC09J3E8 WH-MXC12J9E8 WH-MXC16J9E8 DC current 41.2A Malfunction Caused: Faulty outdoor unit PCB (main).
Page 178 17.5.34 Refrigeration Cycle Abnormality (F24) Malfunction Decision Conditions: During operation running (heating / cooling) for more than 5 minutes expect deice, pumpdown and test mode. During heating / cooling, water outlet and water inlet difference is less than 3°C (Heating) / 2°C (Cooling). During heating / cooling, high pressure <...
Page 179 17.5.35 Four Way Valve Abnormality (F25) Malfunction Decision Conditions: During heating operation, when the indoor pipe temperature of thermostat ON indoor unit < 0°C. During cooling operation, when the indoor pipe temperature of thermostat ON indoor unit > 45°C. Malfunction Caused: Faulty sensor.
Page 180 17.5.36 Outdoor High Pressure Switch Abnormal (F27) Malfunction Decision Conditions: During compressor stop, and outdoor high pressure switch is remain opened. Malfunction Caused: Faulty connector connection. Faulty switch. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue for 1 minute. For safety reason and to prevent component breakdown, Troubleshooting: always switch off the power before remove and connect the component Caution...
Page 181 17.5.37 Indoor Water Outlet Temperature Sensor 2 Abnormality (F30) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor water outlet temperature sensor 2 are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor.
Page 182 17.5.38 Outdoor Air Temperature Sensor Abnormality (F36) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main).
Page 183 17.5.39 Indoor Water Inlet Temperature Sensor Abnormality (F37) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor water inlet temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor.
Page 184 17.5.40 Outdoor Discharge Pipe Temperature Sensor Abnormality (F40) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor.
Page 185 17.5.41 Power Factor Correction (PFC) Abnormality (F41) Malfunction Decision Conditions: During operation of cooling and heating, when the PFC protection circuitry in the outdoor unit PCB (main) senses abnormal high DC voltage level. Malfunction Caused: Power supply surge. Compressor windings not uniform. Faulty outdoor unit PCB (main).
Page 186 17.5.42 Outdoor Pipe Temperature Sensor Abnormality (F42) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main).
Page 187 17.5.43 Outdoor Defrost Temperature Sensor Abnormality (F43) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the outdoor defrost temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main).
Page 188 17.5.44 Indoor Water Outlet Temperature Sensor Abnormality (F45) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor water outlet temperature sensor are used to determine sensor errors. Malfunction Caused: Faulty connector connection. Faulty sensor.
Page 189 17.5.45 Outdoor Current Transformer Open Circuit (F46) Malfunction Decision Conditions: A current transformer (CT) open circuit is detected by checking the compressor running frequency ( rated frequency) and CT detected input current (< 1.6 A) for continuously 20 seconds. Malfunction Caused: CT defective.
Page 190: Disassembly And Assembly Instructions
18. Disassembly and Assembly Instructions WARNING High Voltage 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. WARNING Be sure to switch off all the power supply before performing each of the below action.
Page 191: To Remove The Cabinet Rear Plate
18.3 To Remove The Cabinet Rear Plate 1. Remove 4 2. Remove 7 mounting screws. mounting screws. 18.4 To Remove Pressure Gauge 2. Use spanner to release nut of pressure gauge. Pressure Gauge For WH-MXC12J9E8 and WH-MXC16J9E8...
Page 192: To Remove Water System Electronic Controller Board
CN-PUMP1 CN-PWR4 CN-FLWSEN CN-TH1 CN-TH3 ACL3 LJP2 CN-CNT For WH-MXC12J9E8 & WH-MXC16J9E8 Electronic Controller Board 2. Disconnect all lead wires of G01 (Green), G02 (Green), G03 (Green) AC2-N2 (White), AC2-L2 (Yellow) Data (Red), AC1-N (White) AC1-L3 (Black) and ACL3 (Black)
Page 193: To Remove Air Purge Valve
18.6 To Remove Air Purge Valve Air Purge Valve 1. Turn the Air Purge Valve anti-clockwise, then release the retaining ring and pull out the air purge valve. During reinstall Air Purge Valve. Make sure plug is fully close in clockwise direction. Packing Apply some water based grease on packing surface...
Page 194: To Remove Water Pump
18.8 To Remove Water Pump 1. Disconnect CN-PUMP1 connector from Electronic Controller Board. 2. Remove 2 screw from Pump Bracket. When reinstall the water pipe, use grease or water at the joining. If pump is replace, please follow below instruction. Hose Band Make sure bag opening facing down...
Page 195: To Remove Heater
18.9 To Remove Heater BLUE BLUE BLACK 2. Remove terminal cover by releasing BLACK 1 screw, then remove the Overload ORANGE ORANGE Protector (OLP) lead wire (Blue), (Black) and (Orange). LEAD WIRE FIXING FOR OLP 1. Remove 4 lead wire, HT1-L2 (Orange), HT-L3 (Red) and AC2-N2 (White) and N1 (White) from below the Heater.
Page 196: To Remove Filter
18.10 To Remove Filter 1. Remo ve the access cover by removing 2 screws. 1. Set 2 valve for the Water Filter Set to “CLOSE”. Water Filter 2. Pull up the Water Filter set. 3. Remove the retaining ring, then remove the the Water Filter.
Page 197: Technical Data
19. Technical Data 19.1 Operation Characteristics Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C 16.300 16.200 16.100 16.000 15.900 15.800 Outdoor Temperature (°C) 8.400 7.180...
Page 198 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C 15.500 14.300 13.100 11.900 10.700 9.500 Outdoor Temperature (°C) 5.150 4.750 4.350 3.950 3.550 3.150...
Page 199 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 14°C 19.000 17.500 16.000 14.500 13.000 11.500 Outdoor Temperature (°C) 4.400 4.190 3.980 3.770 3.560 3.350...
Page 200 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 18°C 19.000 17.700 16.400 15.100 13.800 12.500 Outdoor Temperature (°C) 4.400 4.120 3.840 3.560 3.280 3.000...
Page 201: Heating Capacity Table
19.2 Heating Capacity Table Water Out 25ºC 35ºC Outdoor Air Capacity(W) Input Power(W) Current(A) Capacity(W) Input Power(W) Current(A) 16000 7400 11.1 16000 8400 12.6 15300 6100 16000 6910 10.3 19000 6600 16000 6700 10.0 20600 5350 16000 5160 16000 2800 16000 3540 16000...
Page 202: Exploded View And Replacement Parts List
20. Exploded View and Replacement Parts List 20.1 Water System 16 4 16 4 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 203: Refrigerant System
20.2 Refrigerant System 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 204 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 205 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 206 <Water System> SAFETY REF. NO. PART NAME & DESCRIPTION QTY. WH-MXC16J9E8 REMARK BASE PAN ASS’Y ACXD52K02760 HOT WATER COIL - COMPLETE ACXB90C01510 FLOW SWITCH ACXB62-00931 PUMP ACXB53-00390 HEATER ASS'Y ACXA34K00390 SOUND PROOF MATERIAL CWG302594 THERMOSTAT CWA151074 ELECTRONIC CONTROLLER (MAIN) ACXA73C7871R...
Page 207 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. WH-MXC16J9E8 REMARK SOUND PROOF MATERIAL ACXG30-07663 CWG861452 SHOCK ABSORBER CWG713660 SHOCK ABSORBER CWG713661 SHOCK ABSORBER CWG713662 BASE BOARD - COMPLETE ACXG62C02080 C.C. CASE ACXG50-57120 CIRCUIT BREAKER CWA181008 TERMINAL COVER CWH171051 GASKET FOR TERMINAL COVER...
Page 208 <Refrigerant System> SAFETY REF. NO. PART NAME & DESCRIPTION QTY. WH-MXC16J9E8 REMARK BASE PAN ASS’Y CWD52K1276 COMPRESSOR 9JD650XAA22 BUSHING - COMPRESSOR MOUNT CWH50055 NUT - COMPRESSOR MOUNT CWH561049 CRANKCASE HEATER ACXA34-00110 CONDENSER COMPLETE ACXB32C25170 HIGH PRESSURE SENSOR ACXA50-05990 DISCHARGE MUFFLER...
Page 209 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. WH-MXC16J9E8 REMARK WIRE NET CWD041069 CABINET TOP PLATE ACXE03C00880 ACCESSORY CO. (RUBBER CAP) CWH82C1839 CABINET FRONT PLATE CWE061274A TUBE ASSY (CAP.TUBE) ACXT07K09171 EXPANSION VALVE (1) CWB051091 EXPANSION VALVE (2) CWB051029 2-WAYS VALVE (LIQUID)

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Panasonic WH-MXC16J9E8 Service Manual

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