Panasonic CS-MZ16VKE Service Manual
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Panasonic CS-MZ16VKE Service Manual

Indoor unit
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Please file and use this manual together with the service manual for Model No. CU-2E12SBE, CU-2E15SBE, CU-2E18SBE,
CU-3E18PBE,
CU-3E23SBE,
CU-3Z52TBE, CU-3Z68TBE, CU-4Z68TBE, CU-4Z80TBE, CU-5Z90TBE, Order No. PAPAMY1601015CE, PAPAMY1301048CE,
PAPAMY1303046CE, PAPAMY1702035CE, PAPAMY1703049CE, PAPAMY1710082CE.
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked by
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacturer.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
R32 REFRIGERANT
– This Air Conditioner contains and operates with refrigerant R32.
THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.
Refer to Commonwealth, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the
installation, maintenance and/or service of this product.
CU-4E23PBE,
CU-4E27PBE,
WARNING
IMPORTANT SAFETY NOTICE
PRECAUTION OF LOW TEMPERATURE
CU-5E34PBE,
CU-2Z35TBE,
CAUTION
Order No: PAPAMY1902036CE
Indoor Unit
CS-MZ16VKE
Destination
Europe
Turkey
CU-2Z41TBE,
CU-2Z50TBE,
in the Schematic
© Panasonic Corporation 2019.

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Summary of Contents for Panasonic CS-MZ16VKE

  • Page 1 – This Air Conditioner contains and operates with refrigerant R32. THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL. Refer to Commonwealth, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation, maintenance and/or service of this product. © Panasonic Corporation 2019.

  • Page 2: Table Of Contents

    11.1 Indoor Unit ..........24 Cross Flow Fan and Indoor Fan Motor Removal Procedures ....... 111 12. Installation Instruction ........27 18.2 ‘Panasonic Comfort Cloud’ App Setting 12.1 Select the Best Location ......27 Procedure [After Replace Main Printed 12.2 Indoor Unit ..........

  • Page 3: Safety Precautions

    1. Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Confirm the type of gas used before installation.  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 to be installed.
  • Page 4 WARNING  For R410A/R32 model, use piping, flare nut and tools which is specified for R32 refrigerant. Using of existing (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury. ...
  • Page 5 CAUTION Do not touch the sharp aluminium fin, sharp parts may cause injury. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture. Select an installation location which is easy for maintenance. Incorrect installation, service or repair of this air conditioner may increase the risk of rupture and this may result in loss damage or injury and/or property.

  • 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 The appliance shall be stored, installed and operated in a well ventilated room with indoor floor area larger than A ) [refer Table A] and without any continuously operating ignition source.
  • Page 7 CAUTION Installation (Space)  Must ensure the installation of pipe-work shall be kept to a minimum. Avoid use dented pipe and do not allow acute bending.  Must ensure that pipe-work shall be protected from physical damage.  Must comply with national gas regulations, state municipal rules and legislation. Notify relevant authorities in accordance with all applicable regulations.
  • Page 8 CAUTION 2-5. No ignition sources  No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that contains or has contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. He/She must not be smoking when carrying out such work.
  • Page 9 CAUTION The following leak detection methods are deemed acceptable for all refrigerant systems.  No leaks shall be detected when using detection equipment with a capability of 10 Pa•m /s or better, for example, a helium sniffer.  Electronic leak detectors may be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re- calibration.
  • Page 10 CAUTION Labelling  Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant.  The label shall be dated and signed.  Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant. Recovery ...

  • Page 11: Specifications

    3. Specifications Indoor CS-MZ16VKE Model Outdoor CU-3E23SBE Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. Max. 1.30 1.60 2.30 Capacity BTU/h 4430 5460 7840 Running Current – 2.00 – Input Power Annual Consumption – – 5.20 4.00...
  • Page 12 Indoor CS-MZ16VKE Model Outdoor CU-3E23SBE Height (I/D) mm (inch) 295 (11-5/8) Dimension Width (I/D) mm (inch) 919 (36-3/16) Depth (I/D) mm (inch) 194 (7-21/32) Weight Net (I/D) kg (lb) 9 (20) Pipe Diameter Piping mm (inch) 6.35 (1/4) / 9.52 (3/8)
  • Page 13 CU-2Z41TBE, CU-2Z50TBE. A single outdoor unit enables air conditioning of up to three separate rooms for CU-3Z68TBE, CU-3Z52TBE. OUTDOOR UNIT CONNECTABLE INDOOR UNIT CU-2Z35TBE CU-2Z41TBE CU-2Z50TBE CU-3Z68TBE CU-3Z52TBE ROOM TYPE CS-MZ16VKE 1.6kW ● ● ● ● ● ● ● ● ●...
  • Page 14 A single outdoor unit enables air conditioning of up to four separate rooms for CU-4Z68TBE, CU-4Z80TBE. A single outdoor unit enables air conditioning of up to five separate rooms for CU-5Z90TBE. OUTDOOR UNIT CONNECTABLE INDOOR UNIT CU-4Z68TBE CU-4Z80TBE CU-5Z90TBE ROOM TYPE CS-MZ16VKE 1.6kW ● ● ● ● ● ● ●...
  • Page 15 CU-2E18SBE. A single outdoor unit enables air conditioning of up to three separate rooms for CU-3E23SBE, CU-3E18PBE. OUTDOOR UNIT CONNECTABLE INDOOR UNIT CU-2E12SBE* CU-2E15SBE* CU-2E18SBE* CU-3E23SBE* CU-3E18PBE* ROOM TYPE CS-MZ16VKE 1.6kW ● ● ● ● ● ● ● ● ●...
  • Page 16 A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E23PBE, CU-4E27PBE. A single outdoor unit enables air conditioning of up to five separate rooms for CU-5E34PBE. OUTDOOR UNIT CONNECTABLE INDOOR UNIT CU-4E23PBE* CU-4E27PBE* CU-5E34PBE* ROOM TYPE CS-MZ16VKE 1.6kW ● ● ● ● ● ● ●...

  • Page 17: Features

    4. Features  Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control  Environment Protection Non-ozone depletion substances refrigerant (R32)  Easy to use remote control  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 18: Location Of Controls And Components

    5. Location of Controls and Components Indoor Unit Front panel Aluminium fin Auto OFF/ON button Use when remote control is misplaced or a malfunction occurs. Horizontal airflow direction louver Do not adjust by hand. Human activity sensor Remote Control Receiver Vertical airflow direction louver Do not adjust by hand.

  • Page 19: Dimensions

    6. Dimensions <Top View> <Side View> <Front View> <Side View> Air intake direction 2 ±0.5 2 ±0.5 Left piping Air outlet Right piping hole direction hole <Bottom View> <Remote Control> Gas side <Rear View> Liquid side <Remote Control Holder> (41-61) Relative position between the indoor unit and the installation plate <Front View>...

  • Page 20: Refrigeration Cycle Diagram

    7. Refrigeration Cycle Diagram INDOOR LIQUID SIDE 2-WAY VALVE PIPE TEMP. INTAKE SENSOR 2 TEMP. SENSOR PIPE TEMP. SENSOR 1 HEAT EXCHANGER (EVAPORATOR) SIDE 3-WAY VALVE COOLING HEATING...

  • Page 21: Block Diagram

    8. Block Diagram (INDOOR UNIT) FUSE 301 TEMP. FUSE...

  • Page 22: Wiring Connection Diagram

    9. Wiring Connection Diagram...

  • Page 23: Electronic Circuit Diagram

    10. Electronic Circuit Diagram CN–NANO F303 12V_1 (YLW) 500mA R108 -20V HIGH VOLTAGE NANOE POWER SUPPLY R109 (WHT) (WHT) GENERATOR 4.7k 100mA C401 4.7k 5V_3 100mA 5V_3 ELECTRONIC C400 CONTROLLER R401 R406 R405 CN-WLAN NONE (SUB) CN–WLAN (BLK) (WHT) C403 C402 NONE NONE...

  • Page 24: Printed Circuit Board

    11. Printed Circuit Board 11.1 Indoor Unit 11.1.1 Main Printed Circuit Board AC303 CN-FM CN-CNT CN-STM2 CN-STM3 CN-DATA1 CN-STM1 CN-RMT CN-TH CN-DATA3 CN-DISP CN-RCV JP1 (Random Auto Restart enable/disable)
  • Page 25 11.1.2 Indicator Printed Circuit Board LED203 LED201 LED204 LED202 CN-DISP 11.1.3 Receiver Printed Circuit Board CN-RCV 11.1.4 Sub Printed Circuit Board CN-NANO CN-WLAN CN-101 CN-103...
  • Page 26 11.1.5 High Voltage Power Supply Printed Circuit Board 11.1.6 WIFI Module Printed Circuit Board...

  • Page 27: Installation Instruction

    12. Installation Instruction 12.1 Select the Best Location 12.1.1 Indoor Unit 12.1.2 Indoor/Outdoor Unit Installation  Diagram Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.  There should not be any heat source or steam Piping direction (Front side) near the unit.

  • Page 28: Indoor Unit

    12.2 Indoor Unit 12.2.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent it from vibration. Ceiling Wall Wall More than 1 More than 1 2 screw More Indoor unit than 2 Installation 266 mm plate 1 266 mm...
  • Page 29 12.2.3 Indoor Unit Installation ● Do not turn over the unit without it’s shock absorber during pull out the piping. It may cause intake grille damage. ● Use shock absorber during pull out the piping to protect the intake grille from damage. Piping Piping Shock absorber...
  • Page 30 Exchange the drain hose and the cap Rear view for left piping installation Connection cable Piping More than 950 mm Drain hose Connection cable Drain hose Drain hose Drain cap Sleeve for piping hole Adjust the piping slightly downwards. • •...
  • Page 31 Terminal Tape Board Earth Wire longer than others AC wires Connection cable for safety reason Indoor & outdoor Connection cable Recommended length (mm) Recommended Escapement Holder length (mm) Indoor & outdoor WARNING Connection cable This equipment must be properly earthed. Outdoor unit Note: ...
  • Page 32 12.2.5 Connect the Piping 12.2.5.1 Connecting the Piping to Indoor For connection joint of all model (except R32 model) Additional Precautions For R32 Models when connecting by flaring at indoor side Please make flare after inserting flare nut (locate at joint Ensure to do the re-flaring of pipes before connecting to units to avoid leaking.
  • Page 33 12.2.6 How to Take Out Front Grille Please follow the steps below to take out front grille if Screw necessary such as when servicing. Set the vertical airflow direction louvers to the Front grille horizontal position. Vane Remove the 2 caps on the front grille as shown in the illustration at right.
  • Page 34 12.2.9 How to Replace Network Adapter  Remove the front grille (refer how to take out front grille) from the unit.  Remove the network adapter box by releasing the hook (Figure 1.0).  Remove the cover by unclipping it and pulling it out (Figure 1.1). ...

  • Page 35: Installation And Servicing Air Conditioner Using R32

    13. Installation and Servicing Air Conditioner using R32 13.1 About R32 Refrigerant For air conditioning refrigerants such as R410A, the refrigerants were collected back in order to prevent their air dissipation, to curbe the global warming impact, in case they were released into the atmosphere. In the “4th Environmental Basic Plan”, 80% reduction of greenhouse gas emissions by 2050 is required, and due to this requirement, further reduction in the emission of high greenhouse effect gas, such as CFCs, is required.
  • Page 36 2. Characteristic of Pressure As shown in Table 2, R32 does not have much difference in vapor pressure at the same refrigerant temperature comparing to R410A, but comparing to R22, it is higher at 1.6 times more. Thus, the same as in case of R410A, it is necessary to do installation and service using high-pressure tools and components.

  • Page 37: Refrigerant Piping Installation • Tools Used In Services

    13.3 Refrigerant piping installation • Tools used in services 13.3.1 Required Tools R32 refrigerant air conditioners use the common parts as R410A air conditioners for two-way valves and three-way valves (diameters of service ports); thus, they maintain commonality in the maintenance of the compressive strength, the size of pipe flaring, and the size of flare nuts as R410A.
  • Page 38 3. Torque wrenches (diameters 1/2, 5/8) Manifold gauges / Charging hoses In order to strengthen the compressive strength, the diameters of wrenches change depending on the flare nut sizes. Torque wrenches Differences in charging hoses Differences in torque wrenches (common R410A) Normal 5.1 MPa 3.4 MPa...
  • Page 39 7. HFC refrigerant_Electric gas leakage tester 9. Refrigerant cylinders R32 refrigerant is often used for other mixed Refrigerant cylinders for R410A are painted in pink, refrigerant (R410A, R404A, R407C etc.). Therefore, and the ones for R32 are painted in other colors that the usage of existing HFC detectors is possible, but in might subject to change according to the international order to detect more accurately, we recommend to...
  • Page 40 11. Tools used for refrigerant piping installations and services Tools for R410A Common with R32 Possibility of usage for R22 ○ ○ Pipe cutters, reamers or scrapers ○ ○ Flare tools (clutch type) ○ ○ Torque wrench (1/4, 3/8) ○ ×...

  • Page 41: New Installation, Relocation, Repairing Of Refrigerant Cycle System The Procedures

    13.4 New installation, Relocation, Repairing of Refrigerant Cycle System The Procedures Relocation Repairing refrigerant cycle Installation Indoor / outdoor units and piping Pump down Refrigerant recovery • Displacing pipes and wires, and displacing indoor / outdoor units Prevention of impurity •...

  • Page 42: Piping Installation Of R32

    13.5 Piping installation of R32 13.5.1 Pipe materials used and flaring Copper pipes are used for refrigerant piping. Pipes Pipe thickness which comply with JIS Regulations need to be used. Room air conditioners which use R410A and R32 O and OL materials Thickness (mm) have higher pressure;...

  • Page 43: Installation, Relocation, And Service

    13.6 Installation, Relocation, and Service 13.6.1 Air purge and gas leak test for new installation (using new refrigerant pipes) using vacuum pump (From the point of view of global environment protection, do not release CFCs into the atmosphere during installation work) 1.
  • Page 44 13.6.2 Process of refrigerant recovery 1. Connect the center charging hose of manifold gauge to the in-let side of recovery device. 2. Connect the valves of the discharge side of recovery device and liquid side of refrigerant cylinder with red hose (charging hose).
  • Page 45 13.6.3 Relocation 1. Removing the air conditioning unit a) Recovery of outdoor unit refrigerant by pumping down Press “forced cooling button” (as a general rule, since 1998 the name of cooling testing button is changed, and this name is unified within the air conditioning industry), and then you are able to start cooling operation in which the room temperature is low, and you can recover the refrigerant from the outdoor unit.
  • Page 46 13.6.6 Re-insertion of refrigerant in service When re-insertion is needed, follow the procedures to ensure the insertion of new refrigerant at correct amount. 1. Attach charging hose (blue) to the service port of the outdoor unit. 2. Attach charging hose (red) to the vacuum pump. Fully open the 2-way and 3-way valves. 3.

  • Page 47: Repairing Of Refrigerant Cycle / Brazing Point

    13.7 Repairing of refrigerant cycle / Brazing point 13.7.1 Preparation for repairing of refrigerant cycle / brazing Brazing which is a technique needed for repairing refrigerant cycle requires advanced technique and experience, and this brazing procedure can only be performed by the workers who completed “Gas Welding Skill Training” regulated by the Occupational Safety and Health Act, and went through the training programs of refrigerant operations.
  • Page 48 2. Cylinder without adjustment valve side gauge pressure is adjusted by the adjuster. Check the both side valves of the torch and open the cylinder valve to check the remaining refrigerant in the cylinder. Caution: Do not attach oil component on the connection port of the adjuster. Especially, use an oxygen cylinder adjuster which is no oil substance type.
  • Page 49 13.7.5 Types of flame Types of flame change based on the proportion of propane and oxygen. [Neutral Flame] Perform brazing with this flame (This is a flame when oxygen and propane are mixed at proper proportion, and has lesser effect on the brazed metals) White core flame 10 ~ 15 mm...
  • Page 50 13.7.7 Selection of brazing material Use BAg brazing material (silver solder) to increase the welding performance. Tensile strength Composition of ingredients (%) Temperature (°C) Characteristics (Reference) Category Standard Brazing Base Number Solidus Liquidus Kgf•cm applications temp material Liquidity is good at low temperature, 49.0 14.5...
  • Page 51 13.7.10 Checking of brazing (insert) points 1. No impurity on the brazing point Gap 0.025 ~ 0.05 mm If dirt or oil is attached on the brazing point, the brazing filler metal does not reach to junction, and Inner diameter ø6.45 it may cause poor welding.
  • Page 52 (Reference) Melting temperature of copper • • • • • • • Approx. 1083°C Maximum temperature obtained in propane and oxygen • • • • • • • Approx. 1083°C The important point is to heat the bonding part uniformly within a short period of time until reaching to the brazing temperature in the following manner.

  • Page 53: Reference> Analysis Method For No Error Code, No Cooling / No Warming

    13.8 <Reference> Analysis method for no error code, no cooling / no warming 13.8.1 Preparation for appropriate diagnosis In order to obtain appropriate operation characteristics, minimum 15 minutes or more operation time [testing operation (rated operation)] is required. 1. Method of rated operation (rated operation) For the models which have two buttons of “emergency operation and forced cooling operation”, press forced cooling button once.
  • Page 54 1. Measuring temperature 1) Indoor unit suction temperature, release temperature, temperature difference, → Measure by thermometer 2) 2-way valve pipe temperature in cooling mode is low temperature (benchmark：5 ~ 10°C), in heating mode is medium temperature (benchmark：25 ~ 35°C). 3) 3-way valve pipe temperature in cooling mode is low temperature (benchmark：7 ~ 15°C) in heating mode is high temperature (benchmark：38 ~ 50°C).

  • Page 55: Operation Control

    14. Operation Control 14.1 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 56: Indoor Fan Motor Operation

    14.1.5 Automatic Operation  This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature.  During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature.

  • Page 57: Airflow Direction

    [Heating]  According to indoor pipe temperature, automatic heating fan speed is determined as follows. B. Feedback control  Immediately after the fan motor started, feedback control is performed once every second.  During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error counter increase, fan motor is then stop and restart.
  • Page 58 Side View (Inner Vane) Reference point 128º Step 1 Stopper Step 2 Step 3 Closed Position Step 4 Step 5 Side View (Outer Vane) Closed Stopper Position 156º Reference point Step 1 Step 2 Step 3 Step 4 Step 5 Figure 2 * The horizontal vane angle tolerance is within +/- 5 degree.
  • Page 59 14.3.2 Horizontal Airflow  Automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the angles as stated below. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below.

  • Page 60: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)

    14.4 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode)  Purpose To provide quiet cooling operation compare to normal operation.  Control condition Quiet operation start condition  When “POWERFUL/QUIET” button at remote control is pressed twice. QUIET will be shown on remote control display. Quiet operation stop condition ...

  • Page 61: Timer Control

    14.7 Timer Control  There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time.  If more than one timer had been set, the upcoming timer will be displayed and will activate in sequence. 14.7.1 ON Timer Control ...

  • Page 62: Auto Restart Control

    Control pattern:  Cooling mode Sleep Function activated Unit Off Normal Setting +1°C Temperature +1°C -2°C +1°C minutes minutes minutes minutes minutes minutes Setting Set Speed Set Speed Set Speed Set Speed Set Speed Fan Speed 0.5 hr 1.0 hr 2.0 hr Selection of OFF Timer...

  • Page 63: Indication Panel

    14.10 Indication Panel POWER TIMER nanoe X Color White White White White Wireless LAN Mode Light ON Operation ON Timer Setting ON nanoe ON Wireless LAN Mode Light OFF Operation OFF Timer Setting OFF nanoe OFF Note:  If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation mode judgment, or ON timer sampling.
  • Page 64  Power failure During nanoe X individual operation, if power failure occurs, after power resumes, nanoe X individual operation resumes immediately. During combination operation, if power failure occurs, after power resumes, combination operation resume immediately.  nanoe X check mode To enable nanoe X check mode, during nanoe X operation ON:...

  • Page 65: Mild Dry Cooling Operation

    However, there is no guarantee that the APP will work well with all Android OS version.  The Network Adaptor is designed specifically as a terminal for Panasonic Comfort Cloud app.  The Wireless LAN network coverage must reach the air conditioner installation location.
  • Page 66   Google Play Open Open App Store   Search for Panasonic Comfort Cloud app. Search for Panasonic Comfort Cloud app.   Download and install. Download and install. Note  The app user interface image may change for version upgrade without notification.
  • Page 67  Failure communication parameter setting. H85 communication error: time/retry counter 10 min/3 count Wireless LAN disconnection judgment time 300 sec 14.13.8 Between ID AC and Broadband Router Failure Detect Condition  Detect condition: Communication with router is interrupted.  Confirm condition: The interrupted condition continue more than 5 minutes and retry is implemented. ...

  • Page 68: Operation Control (For Multi Split Connection)

    15. Operation Control (For Multi Split Connection) During multi split connection, indoor unit’s operation controls are same with single split connection unless specified in this chapter. 15.1 Cooling operation 15.1.1 Thermostat control  Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature — Internal setting temperature <...

  • Page 69: Automatic Operation

    15.4 Automatic Operation  This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode, indoor intake and outdoor air temperature.  During operation mode judgment, indoor fan motor (with speed of -Lo) and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature.

  • Page 70: Servicing Mode

    16. Servicing Mode 16.1 Auto OFF/ON Button AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds.

  • Page 71: Heat Only Operation

    REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off/On Mode is in standby condition) and press “AC Reset”...

  • Page 72: Remote Control Button

    16.3 Remote Control Button 16.3.1 SET Button  To check remote control transmission code and store the transmission code to EEPROM. Press “Set” button by using pointer. Press “Timer Set” button until a “beep” sound is heard as confirmation of transmission code change. LCD returns to original display if remote control does not operate for 30 seconds.
  • Page 73  To limit set temperature range for COOL & DRY, HEAT mode. Press “Set” button by using pointer. Press TEMP increment or decrement button to choose No. 3. Press Timer increment or decrement button to select desired temperature low limit of set temperature for COOL &...
  • Page 74 Press Timer Set button to confirm high limit selection. Press TEMP increment or decrement button to choose No. 5. Press Timer increment or decrement button to select desired temperature low limit of set temperature for HEAT mode. Normal display mode Press SW to enter customer zone &...
  • Page 75 16.3.2 RESET (RC)  To clear and restore the remote control setting to factory default. Press once to clear the memory 16.3.3 RESET (AC)  To restore the unit’s setting to factory default. Press once to restore the unit’s setting. 16.3.4 TIMER ...
  • Page 76 16.3.6 Customization mode LCD display area: Customization display area (highlighted in color) Function Options (If any) Cannot enter this customization mode under the following conditions: 1 Operation ON. 2 Under [Real/ON/OFF] time setting mode. To enter Customer zone: Normal display Customer Zone mode [range (1~49)]...
  • Page 77 Customization list table: Note: The functions described in the table may not be applicable to the model and may subject to change without further notice. Customization Options Remark Name Remote control number selection A, B, C, D Solar radiation sensitivity level adjustment 1, 2, 3, 4, 5 [iAUTO-X/iAUTO/iCOMF, Cool &...

  • Page 78: Troubleshooting Guide

    17. Troubleshooting Guide 17.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no Normal Pressure and Outlet Air Temperature (Standard) electrical problems before inspecting the refrigeration cycle. Gas Pressure Outlet air Temperature Such problems include insufficient insulation, problem with the (kg/cm (°C) power source, malfunction of a compressor and a fan.
  • Page 79 17.1.1 Relationship Between the Condition of the Air Conditioner and Pressure and Electric Current Cooling Mode Heating Mode Condition of the Electric current Electric current air conditioner Low Pressure High Pressure Low Pressure High Pressure during operation during operation Insufficient refrigerant ...

  • Page 80: Breakdown Self Diagnosis Function

    17.2 Breakdown Self Diagnosis Function 17.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  Once abnormality has occurred during operation, the unit will stop its operation, and Timer LED blinks.  Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown condition, the LED will light up again.

  • Page 81: Error Codes Table

    17.3 Error Codes Table Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation No memory of failure — Normal operation — — Indoor fan only  Indoor/outdoor wire terminal Indoor/outdoor operation can Indoor/outdoor After operation for ...
  • Page 82 Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation  Check indoor/outdoor Wrong wiring and connection wire and connection Abnormal wiring or — — connecting pipe, expansion pipe piping connection valve abnormality  Expansion valve and lead wire and connector ...

  • Page 83: Self-Diagnosis Method

    17.4 Self-diagnosis Method 17.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions  During startup and 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 indoor unit PCB.
  • Page 84 17.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions  During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit or outdoor unit PCBs mounted. ...
  • Page 85 17.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 86 17.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.  Faulty sensor.
  • Page 87 17.4.5 H16 (Outdoor Current Transformer) Malfunction Decision Conditions  An input current, detected by Current Transformer CT, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction Caused  Lack of gas  Broken CT (current transformer) ...
  • Page 88 17.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550 rpm or < 50 rpm) Malfunction Caused ...
  • Page 89 17.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 90 17.4.8 H27 (Outdoor Air Temperature Sensor Abnormality) 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 errors. Malfunction Caused  Faulty connector connection. ...
  • Page 91 17.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) 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 errors. Malfunction Caused  Faulty connector connection. ...
  • Page 92 17.4.10 H30 (Compressor Discharge Temperature Sensor Abnormality) 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 errors. Malfunction Caused  Faulty connector connection. ...
  • Page 93 17.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.
  • Page 94 17.4.12 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions  The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit and outdoor unit PCBs used.  Indoor unit or outdoor unit PCB defective.
  • Page 95 17.4.13 H34 (Outdoor Heat Sink Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 96 17.4.14 H36 (Outdoor Gas Pipe Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 97 17.4.15 H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 98 17.4.16 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused  Operation stops due to short circuit inside the fan motor winding. ...
  • Page 99 17.4.17 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED flashing) Malfunction Decision Conditions  Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. ...
  • Page 100 17.4.18 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions  Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) Malfunction Caused ...
  • Page 101 17.4.19 F11 (4-way Valve Switching Failure) Malfunction Decision Conditions  When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction Caused ...
  • Page 102 17.4.20 F17 (Indoor Standby Units Freezing Abnormality) Malfunction Decision Conditions  When the different between indoor intake air temperature and indoor pipe temperature is above 10°C or indoor pipe temperature is below -1.0°C. Remark: When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit(s).
  • Page 103 17.4.21 F90 (Power Factor Correction Protection) Malfunction Decision Conditions  To maintain DC voltage level supply to power transistor.  To detect high DC voltage level after rectification. Malfunction Caused  During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors.
  • Page 104 17.4.22 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions  The input current is low while the compressor is running at higher than the setting frequency. Malfunction Caused  Lack of gas.  3-way valve close. Troubleshooting...
  • Page 105 17.4.23 F93 (Compressor Rotation Failure) 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 PCB  Faulty compressor Troubleshooting...
  • Page 106 17.4.24 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry) Malfunction Decision Conditions  During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction Caused ...
  • Page 107 17.4.25 F96 (IPM Overheating) Malfunction Decision Conditions  During operating of cooling and heating, when IPM temperature data (100°C) is detected by the IPM temperature sensor. Multi Models only Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat sink temperature sensor.
  • Page 108 17.4.26 F97 (Compressor Overheating) Malfunction Decision Conditions  During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the compressor tank temperature sensor. Malfunction Caused  Faulty compressor tank temperature sensor  2/3 way valve closed ...
  • Page 109 17.4.27 F98 (Input Over Current Detection) Malfunction Decision Conditions  During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is detected by checking the input current value being detected by current transformer (CT) with the compressor running.
  • Page 110 17.4.28 F99 (DC Peak Detection) Malfunction Decision Conditions During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry. Malfunction Caused  DC current peak due to compressor failure. ...

  • Page 111: Disassembly And Assembly Instructions

    18. Disassembly and Assembly Instructions WARNING High Voltage is 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. 18.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 18.1.1...
  • Page 112 18.1.3 To Remove Electronic Controller 3 Hooks (Top, left and right hand side) Remove control board cover by releasing 3 hooks. Figure 2 Remove earth wires. Pull out the 10. Detach all connectors as labelled from the electronic electronic controller. Then pull out the controller halfway.
  • Page 113 18.1.4 To Remove Discharge Grille Remove the screw and pull out the HVU unit. HVU unit Remove the screw and pull out the WIFI module. Figure 6 13. Pull out and remove the drain hose from the discharge grille. 14. Then pull the discharge grille downward gently to dismantle it.
  • Page 114 18.1.6 To Remove Cross Flow Fan and Indoor Fan Motor Figure 9 18. Remove the bearing by pulling it gently. 17. Remove the screw from the evaporator. Figure 10...
  • Page 115 Evaporator 19. Push the holdfast to the left and lift up the evaporator. 21. Fan motor can be removed after Cross flow fan the removal of the cross flow fan. Reminder: To reinstall the fan motor, adjust the fan motor connector to 90° towards you before fixing control board.
  • Page 116 18.1.7 To Assemble the Front Grille Receiver PCB CAUTION Do not directly fix the front grille complete, to avoid hitting the Receiver PCB. Figure 13 Gently assemble the right side of the front grille first then fix the left side. Figure 14...
  • Page 117 18.1.8 To Assemble the Intake Grille Hook Intake Grille Align the intake grille hooks into the slot. Hook Place in the hook to the slot. Then slightly bend the intake grille and push in the hooks into the slot. Figure 15...
  • Page 118 Unclip & pull down Remove the top casing by pressing the side of the network adapter box. Press Press After that, network adapter can be easily replaced. Reminder: Serviceman or owner must setting again Panasonic Comfort Cloud app after replace Wireless LAN Module.

  • Page 119: Panasonic Comfort Cloud' App Setting Procedure [After Replace Main Printed Circuit Board Or Change The Indoor Unit]

    18.2 ‘Panasonic Comfort Cloud’ App Setting Procedure [After Replace Main Printed Circuit Board or Change the Indoor Unit] 18.2.1 Initial Setup (Method 1) My house My house Menu Home My House Living room Living room Owner 30.0 C 16.May 15:50 16.May 15:50...
  • Page 120 Setting Connection Network Connection Guide Connection Guide Connection Guide Step 1 Step 1 Step 2 Step 2 Step 3 Step 3 Step 1 Step 2 Step 3 Step 1 Step 3 Step 2 Make sure smartphone is connected to same wireless network.
  • Page 121 Connection network using WPS mode (Method 1) Connection Guide Connection Guide Connection Guide Step 1 Step 2 Step 3 Step 1 Step 2 Step 3 Step 1 Step 2 Step 3 If Wireless LAN LED is OFF during the connec on setup, please press “Wireless LAN”...
  • Page 122 Copy password and next CANCEL CONNECT HUAWEI-E5377-F108 MF910_84AA17 Cancel (go back to previous screen) English (UK) Done 3. Copy the password for later use. Select “Panasonic-CS-wirelessAP” from smartphones Wireless LAN setting and enter the copied password. Return to “Panasonic Comfort Cloud” app.
  • Page 123 Select your wireless router Select your wireless router Select your wireless router Network name (SSID) Network name (SSID) router SSID1 Panasonic-factory-wireless-ap-00 Panasonic-factory-wireless-ap-00 Enter the password of the selected router SSID2 Security wireless router. router SSID3 WPA2...
  • Page 124  By registered the new name of air- conditioner, the function of “Panasonic Comfort Cloud” app is ready to be used. Device password setting My house Step 1 Step 3...
  • Page 125 18.2.2 ‘Panasonic Comfort Cloud’ App Setting Procedure [After Replace Wireless LAN Module] 18.2.2.1 Initial Setup (Method 1) My house My house Menu Home My House Living room Living room Owner 30.0 C 16.May 15:50 16.May 15:50 User list Bedroom 1...
  • Page 126 Please choose the following: My Home Was this air-condi oner operated using this Living Room smart APP before? Newly purchased air-condi oner CS-MZ16VKE Others (Air -condi oner used before) Cancel Cancel Cancel Start 4. Select start button to proceed for 5.
  • Page 127 18.2.2.3 Setting Connection Network Connection Guide Connection Guide Connection Guide Step 1 Step 1 Step 2 Step 2 Step 3 Step 3 Step 1 Step 2 Step 3 Step 1 Step 2 Step 3 Make sure smartphone is connected to same wireless network.
  • Page 128 Press and hold “Wireless LAN” bu on for 5 secs un l easy se “ ” 1 SSID: Panasonic-CS-wirelessAP Press “up” or “down” bu on un l Advance Password: Rac8pswi se ng “2” is shown. Point remote control to air-condi oner and press “SET”...
  • Page 129 MF910_84AA17 Cancel (go back to previous screen) English (UK) Done 2. Copy the password for later use. Select “Panasonic-CS-wirelessAP” from smartphones Wireless LAN setting and enter the copied password. Return to “Panasonic Comfort Cloud” app. Connection Guide Connection Guide Connection Guide...
  • Page 130 18.2.2.6 Select the Air Conditioner and Set the Password Connection Guide Connection Guide My house Step Step Step Step 1 Step 2 Step 3 Master room *If Wireless LAN LED is OFF, please press Select the air-condi oner for registra on “Wireless LAN”...

  • Page 131: Exploded View And Replacement Parts List

    19. Exploded View and Replacement Parts List 19.1 Indoor Unit CWH55025J CWH55051J 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 132 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-MZ16VKE REMARK CHASSIS COMPLETE ACXD50C00200 FAN MOTOR L6CBYYYL0175 CROSS-FLOW FAN COMPLETE CWH02C1076 BEARING ASSY CWH64K1006 SCREW - CROSS-FLOW FAN CWH551146 PARTICULAR PIECE CWD933067B EVAPORATOR ACXB30C12920 FLARE NUT (LIQUID) CWT251048 FLARE NUT (GAS)
  • Page 133 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-MZ16VKE REMARK INSTALLATION INSTRUCTION ACXF60-36520 INSTALLATION INSTRUCTION ACXF60-36530 INSTALLATION INSTRUCTION ACXF60-36540 INSTALLATION INSTRUCTION ACXF60-36550 INSTALLATION INSTRUCTION ACXF60-36560 INSTALLATION INSTRUCTION ACXF60-36570 INSTALLATION INSTRUCTION ACXF60-36580 INSTALLATION INSTRUCTION ACXF60-36590 CWG861497 SHOCK ABSORBER (L) ACXG70-00380 SHOCK ABSORBER (R) ACXG70-00390 C.

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