Mitsubishi Electric Mr.SLIM PUZ-ZM200YKA Service Manual
  1. Manuals
  2. Brands
  3. Mitsubishi Electric Manuals
  4. Air Conditioner
  5. Mr.SLIM PUZ-ZM200YKA
  6. Service manual

Mitsubishi Electric Mr.SLIM PUZ-ZM200YKA Service Manual

Split-type, heat pump air conditioners
Hide thumbs Also See for Mr.SLIM PUZ-ZM200YKA:
Table of Contents

Advertisement

Quick Links

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
Outdoor unit
[Model Name]
PUZ-ZM200YKA
PUZ-ZM250YKA
[Service Ref.]
PUZ-ZM200YKA.UK
PUZ-ZM250YKA.UK
R32
CONTENTS
1. REFERENCE MANUAL ···························· 2
2. SAFETY PRECAUTION ···························· 2
3. FEATURES ·········································· 12
4. SPECIFICATIONS ································· 13
5. DATA ·················································· 14
6. OUTLINES AND DIMENSIONS ················ 17
7. WIRING DIAGRAM ································ 18
8. WIRING SPECIFICATIONS ····················· 19
9. REFRIGERANT SYSTEM DIAGRAM ·········· 24
10. TROUBLESHOOTING ·························· 26
11. FUNCTION SETTING ··························· 80
12. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ·91
13. EASY MAINTENANCE FUNCTION ········100
14. DISASSEMBLY PROCEDURE ··············103
PARTS CATALOG (OCB738)
March 2020
No. OCH738
Note:
• This manual describes service
data of the outdoor units only.

Advertisement

Table of Contents
loading

Related Manuals for Mitsubishi Electric Mr.SLIM PUZ-ZM200YKA

Summary of Contents for Mitsubishi Electric Mr.SLIM PUZ-ZM200YKA

  • Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS March 2020 No. OCH738 SERVICE MANUAL Outdoor unit [Model Name] [Service Ref.] PUZ-ZM200YKA.UK PUZ-ZM200YKA Note: • This manual describes service data of the outdoor units only. PUZ-ZM250YKA.UK PUZ-ZM250YKA CONTENTS 1. REFERENCE MANUAL ···························· 2 2. SAFETY PRECAUTION ···························· 2 3.
  • Page 2 REFERENCE MANUAL INDOOR UNIT SERVICE MANUAL Service Model Name Service Ref. Manual No. OCH650 PLA-ZM50/60/71/100/125EA PLA-ZM50/60/71/100/125EA.UK OCB650 OCH697 PLA-M50/60/71/100/125EA PLA-M50/60/71/100/125EA.UK OCB697 OCH725 PCA-M71HA(-ET) PCA-M71HA(-ET) OCB725 OCH659 PCA-M50/60/71/100/125KA PCA-M50/60/71/100/125/KA OCB659 OCH660 PKA-M50HA(L) PKA-M50HA(L) OCB660 OCH661 PKA-M60/71/100KA(L) PKA-M60/71/100KA(L).TH OCB661 HWE16130 PEAD-M50/60/71/100/125JA(L) PEAD-M50/60/71/100/125JA(L).UK BWE017010 SAFETY PRECAUTION MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT...
  • Page 3 Use a vacuum pump with a reverse flow check Use new refrigerant pipes. valve. In case of using the existing pipes for R22, be careful with Vacuum pump oil may flow back into refrigerant cycle and the following: that can cause deterioration of refrigerant oil, etc. ·...
  • Page 4 [1] Warning for service (1) Do not alter the unit. (2) For installation and relocation work, follow the instructions in the Installation Manual and use tools and pipe components specifically made for use with refrigerant specified in the outdoor unit installation manual. (3) Ask a dealer or an authorized technician to install, relocate and repair the unit.
  • Page 5 [4] Cautions for unit using R32 refrigerant Basic work procedures are the same as those for conventional units using refrigerant R410A. However, pay careful attention to the following points. (1) Information on servicing (1-1) Checks on the Area Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized.
  • Page 6 (3) Repair to intrinsically Safe Components Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use. Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere.
  • Page 7 b) Isolate system electrically. c) Before attempting the procedure, ensure that: • mechanical handling equipment is available, if required, for handling refrigerant cylinders; • all personal protective equipment is available and being used correctly; • the recovery process is supervised at all times by a competent person; •...
  • Page 8 [5] Service tools Use the below service tools as exclusive tools for R32 refrigerant. Tool name Specifications Gauge manifold · Only for R32 · Use the existing fitting specifications . (UNF1/2) · Use high-tension side pressure of 5.3MPa·G or over. Charge hose ·...
  • Page 9 (2) Cautions for refrigerant piping work New refrigerant R32 is adopted for replacement inverter series. Although the refrigerant piping work for R32 is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R32 is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.
  • Page 10 2-4. Choosing the outdoor unit installation location R32 is heavier than air—as well as other refrigerants— so tends to accumulate at the base (in the vicinity of the floor). If R32 accumulates around base, it may reach a flammable concentration in case room is small. To avoid ignition, maintaining a safe work environment is required by ensuring appropriate ventilation.
  • Page 11 C) Create an appropriate ventilation open area. Make sure that the width of the open area is 0.9 [m] or more and the height of the open area is 0.15 [m] or more. However, the height from the bottom of the installation space to the bottom edge of the open area should be 0.125 [m] or less.
  • Page 12 Case 2: for floor standing (PSA-M) M [kg] Amin [m²] < 1.84 No requirements 1.84 h0 = 0 [m] Floor standing (PSA-M) FEATURES PUZ-ZM200YKA.UK PUZ-ZM250YKA.UK CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT Maximum 30 m The refrigerant circuit with LEV (Linear Expansion Valve) and power receiver always control the optimal refrigerant level regardless of the length (30 m maximum and 5 m minimum) of piping.
  • Page 13 SPECIFICATIONS Service Ref. PUZ-ZM200YKA.UK PUZ-ZM250YKA.UK Power supply (phase, cycle, voltage) 3 phase 50 Hz, 400 V Max. current 22.5 External finish Munsell 3Y 7.8/1.1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model AVB52FBAMT Motor output Starter type Inverter Protection devices HP switch Comp surface thermo Over current detection...
  • Page 14 DATA 5-1. REFILLING REFRIGERANT CHARGE (R32: kg) PUZ-ZM200/250 Piping length (one way) Initial Service Ref. charged 10 m 20 m 30 m 40 m 50 m 60 m 75 m PUZ-ZM200YKA.UK +0.4 (6.7) +0.8 (7.1) +1.2 (7.5) +1.6 (7.9) PUZ-ZM250YKA.UK +0.6 (7.4) +1.2 (8.0) +1.8 (8.6)
  • Page 15 5-4. NOISE CRITERION CURVES MICROPHONE UNIT 1.5 m GROUND PUZ-ZM200YKA.UK PUZ-ZM250YKA.UK SPL(dB) SPL(dB) MODE LINE MODE LINE COOLING COOLING HEATING HEATING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20 CONTINUOUS...
  • Page 16 5-5. STANDARD OPERATION DATA PLA-ZM100EA.UK × 2 PLA-ZM125EA.UK × 2 Representative matching Cooling Heating Cooling Heating Mode Capacity 19,000 22,400 22,000 27,000 Input 4.95 5.63 6.86 7.81 Indoor unit PLA-ZM100EA.UK PLA-ZM125EA.UK Phase , Hz 1, 50 1, 50 Voltage Current 0.47 ×...
  • Page 17 OUTLINES AND DIMENSIONS PUZ-ZM200YKA.UK Unit: mm PUZ-ZM250YKA.UK OCH738...
  • Page 18 WIRING DIAGRAM PUZ-ZM200YKA.UK PUZ-ZM250YKA.UK OCH738...
  • Page 19 WIRING SPECIFICATIONS 8-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model ZM200/250 Outdoor unit power supply 3N~ (3 ph 4-wires), 50 Hz, 400 V Outdoor unit input capacity main switch (Breaker) 32 A Outdoor unit power supply 5 × Min 4 Cable length 50m:3×4 (Polar)/ Indoor unit-Outdoor unit Cable length 80m:3×6 (Polar)
  • Page 20 8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES The following illustrations show available connection patterns. The outdoor unit power supply patterns vary on models. Simultaneous twin/triple system <For models without heater> The optional indoor power supply terminal kit is required. Outdoor unit power supply Earth leakage breaker Wiring circuit breaker or isolating switch Outdoor unit...
  • Page 21 8-3. INDOOR – OUTDOOR CONNECTING CABLE The cable shall not be lighter than design 60245 IEC or 60227 IEC. Wire No. o Size (mm²) Indoor/Outdoor separate power supply Max. 120 m Indoor unit-Outdoor unit 2 o Min 0.3 Indoor unit-Outdoor unit earth —...
  • Page 22 8-4. M-NET WIRING METHOD Points to note: (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication. Place them at intervals of more than 5 cm. Do not put them in the same conduit tube.
  • Page 23 M-NET wiring (1) Use 2-core × 1.25mm² shield wire for electric wires. M-NET terminal (Excluding the case connecting to system controller.) Earth block wire (2) Connect the wire to the M-NET terminal block. Connect one core of the transmission wire (non-polar) to A terminal and the other to B. Peel the shield wire, twist the shield part to a string and connect it to S terminal.
  • Page 24 REFRIGERANT SYSTEM DIAGRAM PUZ-ZM200YKA.UK PUZ-ZM250YKA.UK Unit: mm Heat exchanger Thermistor TH6 Thermistor TH7 (2-phase pipe) (Ambient) Ball valve 4-way valve Strainer Refrigerant GAS pipe connection ø25.4 (ø 1 inch ) Muffler Distributor Charge plug (Low pressure) High pressure switch 63H Charge plug Strainer (High pressure)
  • Page 25 9-1. REFRIGERANT COLLECTING (PUMP DOWN) When relocating or disposing of the indoor/outdoor unit, pump down the system following the procedure below so that no refrig- erant is released into the atmosphere. 1 Turn off the power supply (circuit breaker). 2 Connect the low pressure valve on the gauge manifold to the charge plug (low pressure side) on the outdoor unit. 3 Close the liquid stop valve completely.
  • Page 26 TROUBLESHOOTING 10-1. TROUBLESHOOTING <Check code displayed by self-diagnosis and actions to be taken for service (summary)> Present and past check codes are logged, and they can be displayed on the control board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summarized in the table below. Check the contents below before investigating details.
  • Page 27 10-2-2. Test run for wired remote controller <PAR-4xMAA ("x" represents 0 or later)> MENU RETURN SELECT ON/OFF Function buttons Select "Service" from the Main menu, and press the [ ] button. Test run Input maintenance info. Settings Check Others Select "Test run" with the F1 or F2 button, and press the [ ] button.
  • Page 28 <Error information> When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer. Check code, error unit, refrigerant address, unit model name, and Error information serial number will appear. Error code The model name and serial number will appear only if the informa- Error unit Unit#1...
  • Page 29 <Checking the error information> Maintenance menu While no errors are occurring, page 2/2 of the error information can be Error information viewed by selecting "Error information" from the Maintenance menu. Filter information Errors cannot be reset from this screen. Cleaning Main menu: Cursor <Error history>...
  • Page 30 10-2-3. Test run for wireless remote controller (Type C) Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1.0M". TEST RUN 1 Turn on the main power to the unit.
  • Page 31 10-3. HOW TO PROCEED "SELF-DIAGNOSIS" 10-3-1. Self-diagnosis <PAR-4xMAA ("x" represents 0 or later)> Select "Service" from the Main menu, and press the [ ] button. Diagnosis Self check Select "Check" from the Service menu, Remote controller check and press the [ ] button.
  • Page 32 10-3-2. Remote controller check <PAR-4xMAA ("x" represents 0 or later)> If operations cannot be completed with the remote controller, diagnose the remote controller with this function. Select "Service" from the Main menu, Diagnosis and press the [ ] button. Self check Remote controller check Select "Check"...
  • Page 33 10-3-3. Self-diagnosis for wireless remote controller (Type C) When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. < Malfunction-diagnosis method at maintenance service> [Procedure] 1. Press the CHECK button twice. Refrigerant address •...
  • Page 34 • Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds Beep Beep Beep Beep Beep Beep Beep OPERATION · · · Repeated INDICATOR lamp flash pattern Approx. 2.5 s 0.5 s 0.5 s 0.5 s 0.5 s Approx.
  • Page 35 10-4. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is put on> Note: Refer to indoor unit section for codes starting with P and E. Check Code Abnormal points and detection method Cause Judgment and action 1 No voltage is supplied to terminal 1 Check following items.
  • Page 36 Check Code Abnormal points and detection method Cause Judgment and action Miswiring of indoor/outdoor unit 1 Contact failure or miswiring of 1 Check disconnection or looseness or connecting wire indoor/outdoor unit connecting polarity of indoor/outdoor unit connecting 1. Outdoor controller circuit board can wire wire of indoor and outdoor units.
  • Page 37 <Abnormalities detected while unit is operating> Check Code Abnormal points and detection method Cause Judgment and action High pressure(High pressure switch 63H 1 Short cycle of indoor unit 1–6 Check indoor unit and repair defect. operated)/High compressor temperature 2 Clogged filter of indoor unit 3 Decreased airflow caused by dirt (Thermal protector TRS operated) of indoor fan...
  • Page 38 Check Code Abnormal points and detection method Cause Judgment and action Open/short of outdoor unit thermistors 1 Disconnection or contact failure of 1 Check connection of connector (TH3,TH6/TH7) (TH3, TH6, TH7, and TH8) connectors on the outdoor controller circuit board. Check connection of connector (CN3) on the outdoor Abnormal if open or short is detected during Outdoor controller circuit...
  • Page 39 Check Code Abnormal points and detection method Cause Judgment and action To find out the detail history (latest) about U9 error, turn ON SW2-1, 2-2 and 2-6. Detailed codes Refer to "10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS". Overvoltage error 1 Abnormal increase in power source 1 Check the field facility for the power •...
  • Page 40 Check Code Abnormal points and detection method Cause Judgment and action Over heat protection 1 Defective outdoor fan (fan motor) 1 Check outdoor unit air passage. Abnormal if outdoor pipe thermistor (TH3) or short cycle of outdoor unit detects 70: or more during compressor during cooling operation operation.
  • Page 41 Check Code Abnormal points and detection method Cause Judgment and action Remote controller transmission error (E0)/ 1 Contact failure at transmission 1 Check disconnection or looseness of signal receiving error (E4) wire of remote controller indoor unit or transmission wire of remote 1 Abnormal if main or sub remote controller controller.
  • Page 42 Check Code Abnormal points and detection method Cause Judgment and action Indoor/outdoor unit communication error Check LED display on outdoor controller (Signal receiving error) circuit board. (Connect A-Control service 1 Abnormal if indoor controller board could tool (PAC-SK52ST)) Refer to EA−EC item if not receive any signal normally for 6 LED displays EA−AC.
  • Page 43 Check Code Abnormal points and detection method Cause Judgment and action Serial communication error 1 Breaking of wire or contact failure 12 Check connection of each connector CN2 1 Abnormal if serial communication between of connector CN2 between the and CN4 between the outdoor controller outdoor controller circuit board and out- outdoor controller circuit board circuit board and the outdoor power cir-...
  • Page 44 <M-NET communication error> Note: “Indoor unit” in the text indicates M-NET board in outdoor unit. Check Code Abnormal points and detection method Cause Judgment and action Address duplicate definition 1 There are 2 or more same Search the unit with same address as This error is displayed when transmission address of controller of outdoor abnormality occurred.
  • Page 45 Check Code Abnormal points and detection method Cause Judgment and action NO ACK signal Common factor that has no relation Always try the following when the error with abnormality source 1. Transmitting side controller detects “A7” occurs. 1 The unit of former address does abnormal if a message was transmitted 1 Turn off the power supply of outdoor not exist as address switch has...
  • Page 46 Check Code Abnormal points and detection method Cause Judgment and action 4. If displayed address or attribute is remote Same as mentioned in “A7” of the previ- 1 During group operation with indoor unit of multi-refrigerant controller, indoor unit detects abnormal- ous page.
  • Page 47 Check Code Abnormal points and detection method Cause Judgment and action M-NET NO RESPONSE 1 Transmitting condition is repeated 1 Check transmission waveform or noise on Abnormal if a message was transmitted and fault because of noise and the transmission wire. there were reply (ACK) that message was like.
  • Page 48 Phenomena Factor Countermeasure 4. Even controlling by the wireless 1 The pair number settings of the wireless remote 1 Check the pair number settings. remote controller, no beep is heard controller and indoor controller board are and the unit does not start operating. mismatched.
  • Page 49 Symptoms: “Please Wait” is kept being displayed on the remote controller. Inspection method and Diagnosis flow Cause troubleshooting Check the display time of “Please Wait” after turning on the main power. 6 minutes 2 minutes or more or less How long is “Please Wait” •...
  • Page 50 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller. 1 LED1 : LED2 : LED3 : Inspection method and Diagnosis flow Cause troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.
  • Page 51 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller. 2 LED1 : LED2 : LED3 : Inspection method and Diagnosis flow Cause troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.
  • Page 52 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller. 3 LED1 : LED2 : LED3 : — Inspection method and Diagnosis flow Cause troubleshooting Check the voltage of the terminal block (TB6) of the remote controller. 10 to 16 V DC? •...
  • Page 53 • Before repair Frequent calling from customers Phone Calls From Customers How to Respond Note Unit does 1 The operating display of remote 1 Check if power is supplied to air conditioner. not operate controller does not come on. Nothing appears on the display unless power is at all.
  • Page 54 Phone Calls From Customers How to Respond Note The room cannot be cooled or heated sufficiently. 1 Check the set temperature of remote controller. The outdoor unit cannot be operated if the set temperature is not appropriate. The outdoor unit operates in the following modes. COOL: When the set temperature is lower than the room temperature.
  • Page 55 Phone Calls From Customers How to Respond Note Something 3 Air blows out for a while after However, this control is also 3 This is not a malfunction. is wrong HEAT operation is stopped. The blower is operating just for cooling down the applied to the models which with the heated-up air conditioner.
  • Page 56 Phone Calls From Customers How to Respond Note A white mist is expelled from the indoor unit. This is not a malfunction. This may occur when the operation is started in the room of high humidity. Water or moisture is expelled from the outdoor COOL: when pipes or piping joints are cooled, they unit.
  • Page 57 10-6. HOW TO CHECK THE PARTS PUZ-ZM200YKA.UK PUZ-ZM250YKA.UK Parts name Checkpoints Disconnect the connector then measure the resistance with a tester. Thermistor (TH3) (At the ambient temperature 10 to 30°C) <Liquid> Thermistor (TH4) <Discharge> Normal Abnormal Thermistor (TH6) TH4/TH33 160 to 410 k" <2-phase pipe>...
  • Page 58 Check method of DC fan motor (fan motor/outdoor controller circuit board) Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. board and fan motor.) (It causes trouble of the outdoor controller circuit Self check...
  • Page 59 10-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Liquid> (TH3) • Thermistor <2-phase pipe> (TH6) • Thermistor <Ambient> (TH7) Thermistor R0 = 15 k" ± 3% B constant = 3480 ± 2% =15exp{3480( – 273+t 15 k"...
  • Page 60 Linear expansion valve (1) Operation summary of the linear expansion valve • Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the outdoor controller cir- cuit board. • Valve position can be changed in proportion to the number of pulse signal. <Connection between the outdoor controller board and the linear expansion valve>...
  • Page 61 (3) How to attach and detach the coil of linear expansion valve <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Main body Stopper Coil Lead wire <How to detach the coil> Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward.
  • Page 62 10-8. EMERGENCY OPERATION (1) When any check codes shown below is displayed on outdoor unit, or microcomputer for wired remote controller or indoor unit has a failure while no other problems are found, emergency operation will be available by setting the emergency opera- tion switch (SWE) ON and short-circuiting the connector (CN31) on outdoor controller board.
  • Page 63 (5) Operation data during emergency operation During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation are set to the following values: Operation mode Operation data Remarks COOL HEAT Intake temperature (TH1) 27°C 20.5°C –...
  • Page 64 10-9. TEST POINT DIAGRAM Outdoor controller circuit board PUZ-ZM200YKA.UK <CAUTION> TEST POINT1 is high voltage. PUZ-ZM250YKA.UK CN51 CNDM External signal output Manual defrost, 1 to 2: Input of low-level sound priority mode • Compressor operating signal detect history Demand control setting 1 to 3: Input of external contact point •...
  • Page 65 Outdoor noise filter circuit board PUZ-ZM200YKA.UK PUZ-ZM250YKA.UK LI1, LI2, LI3, NI POWER SUPPLY LI1-LI2/LI2-LI3/LI3-LI1: 400 V AC input LI1-NI/LI2-NI/LI3-NI: 230 V AC input (Connect to the terminal block (TB1)) Connect to the elec- trical parts box CNAC1, CNAC2 230 V AC (Connect to the outdoor controller circuit board (CNAC))
  • Page 66 Outdoor power circuit board PUZ-ZM200YKA.UK Brief Check of POWER MODULE Usually, they are in a state of being short-circuited if they are broken. PUZ-ZM250YKA.UK Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken. 1.
  • Page 67 Outdoor M-NET board (optional) Switch for communication LED11 LED13 display between LED12 Outdoor unit Receiving CN2M M-NET and outdoor board Transmitting connecting display Connect to M-NET Serial communication with outdoor board LED2 Energizing display of M-NET board (5V power supply) SW11 SW12 Power supply (5V/12V) input...
  • Page 68 Action by the switch operation Type of Switch No. Function Effective timing Switch No function — — — Power failure Auto recovery No auto recovery When power supply ON automatic recovery * 3,4,5 No function — — — No function —...
  • Page 69 (2) Function of connector Action by open/short operation Types Function Effective timing Connector Short Open Connector CN31 Start When power supply ON Emergency operation Normal Special function (a) Low-level sound priority mode (Local wiring) By performing the following modification, operation noise of the outdoor unit can be reduced by about 3-4 dB. The low noise mode will be activated when a commercially available timer or the contact input of an ON/OFF switch is added to the CNDM connector (option) on the control board of the outdoor unit.
  • Page 70 <Display function of inspection for outdoor unit> The blinking patterns of both LED1 (green) and LED2 (red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part ‘A-Control Service Tool (PAC-SK52ST)’ to connector CNM on outdoor controller board.
  • Page 71 Indication Error Outdoor controller board Check Detailed Contents code Inspection method reference LED1 LED2 page (Green) (Red) 3 blinking 1 blinking Abnormality of discharge thermistor/comp. 1 Check if stop valves are open. P.37 surface thermistor (TH4/TH33) 2 Check if connectors (TH4,TH33, LEV-A, LEV-B) on outdoor controller board are not disconnected.
  • Page 72 <Outdoor unit operation monitor function> [When optional part ‘A-Control Service Tool (PAC-SK52ST)’ is connected to outdoor controller board (CNM)] Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of check code by controlling DIP SW2 on ‘A-Control Service Tool’. Operation indicator SW2: Indicator change of self-diagnosis SW2 setting...
  • Page 73 The black square ( ) indicates a switch position. SW2 setting Display detail Explanation for display Unit Pipe temperature/Liquid (TH3) −60 to 91 −60 to 91 (When the coil thermistor detects 0°C or below, “–” and temperature are displayed by turns.) °C (Example) When −10°C;...
  • Page 74 The black square ( ) indicates a switch position. Display detail Explanation for display Unit SW2 setting Pipe temperature/Liquid (TH3) on error −60 to 91 occurring (When the coil thermistor detects 0°C or below, “–” −60 to 91 and temperature are displayed by turns.) °C (Example) When −15°C;...
  • Page 75 The black square ( ) indicates a switch position. Display detail Explanation for display SW2 setting Unit 0 to 4 The number of connected indoor units (The number of connected indoor units are dis- played.) Unit 2 3 4 5 6 Capacity setting display Displayed as an outdoor capacity code.
  • Page 76 The black square ( ) indicates a switch position. Display detail Explanation for display Unit SW2 setting Indoor setting temperature 17 to 30 17 to 30 °C 2 3 4 5 6 Outdoor pipe temperature/2-phase (TH6) −60 to 91 −60 to 91 (When the temperature is 0°C or less, “–”...
  • Page 77 The black square ( ) indicates a switch position. Display detail Explanation for display Unit SW2 setting DC bus voltage 150 to 400 (ZM100–140V) 150 to 400 (ZM100–140V) 300 to 750 (ZM100–140Y) 300 to 750 (ZM100–140Y) (When it is 100 V or more, hundreds digit, tens digit and ones digit are displayed by turns.) 2 3 4 5 6 0 to 100...
  • Page 78 The black square ( ) indicates a switch position. Display detail Explanation for display Unit SW2 setting LEV-C opening pulse 0 to 480 0 to 480 (ZM140) (When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 130 pulse;...
  • Page 79 The black square ( ) indicates a switch position. Display detail SW2 setting Explanation for display Unit Sub cool on error occurring SC 0 to 130 0 to 130 (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by Cooling = TH6−TH3 turns.) °C...
  • Page 80 FUNCTION SETTING 11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set as necessary using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1. <Table 1>...
  • Page 81 (2) Functions available when setting the unit number to 01–03 or AL (07 in case of wireless remote controller) • When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 setting the indoor unit number of Operating Procedure.
  • Page 82 11-1-1. Selecting functions using the wired remote controller <PAR-4xMAA ("x" represents 0 or later)> <Service menu> Maintenance password is required Select "Service" from the Main menu, and press the [ ] button. Main Main menu *At the main display, the menu button and select "Service" to make the maintenance setting.
  • Page 83 <Function setting> Settings menu Select "Service" from the Main menu, and press the [ ] button. Function setting Select "Setting" from the Service menu, and press the [ ] button. Service menu: Select "Function setting", and press the [ ] button. Set the indoor unit refrigerant addresses and unit numbers with the F1 Function setting Ref.
  • Page 84 11-1-2. Selecting functions using the wireless remote controller (Type C) Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refriger- ant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller. [Flow of function selection procedure] Flow of function selection procedure The flow of the function selection procedure is shown below.
  • Page 85 11-1-3. Selecting functions using the wireless remote controller <PAR-SL100A-E> 1 Going to the function select mode Press the button between of 5 seconds. (Start this operation from the status of remote controller display turned off.) [CHECK] is lit and "00" blinks. (Fig. 11-1) Press the button to set the "50".
  • Page 86 11-2. FUNCTION SELECTION OF REMOTE CONTROLLER 11-2-1. <PAR-4xMAA ("x" represents 0 or later)> The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear.
  • Page 87 Menu structure Main menu Press the button. MENU Move the cursor to the desired item with the buttons, and press the button. SELECT Operation Vane · Louver · Vent. (Lossnay) High power Comfort Manual vane angle 3D i-See sensor Bluetooth connection Timer menu Timer ON/OFF timer...
  • Page 88 Continue from the previous page. Maintenance menu Error information Filter information Cleaning Auto descending panel Descending operation Descending adjustment Service menu Test run menu Test run Drain pump test run Maintenance information Model name input Serial No. input Dealer information input Initialize maintenance info.
  • Page 89 Main menu list Main Setting and display items Setting details menu Operation Vane · Louver · Vent. Use to set the vane angle. (Lossnay) • Select a desired vane setting from 5 different settings. Use to turn ON/OFF the louver. •...
  • Page 90 Main Setting and display items Setting details menu Initial Basic Main/Sub When connecting 2 remote controllers, one of them needs to be designated as setting setting a sub controller. Clock Use to set the current time. Daylight Set the daylight saving time. saving time Administrator The administrator password is required to make the settings for the following...
  • Page 91 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 12-1. HOW TO "MONITOR THE OPERATION DATA" <PAR-4xMAA ("x" represents 0 or later)> Details on the operation data including each thermistor temperature and error history can be confirmed with the remote controller. Select "Service"...
  • Page 92 12-2. Request code list Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed. Description Request content Unit Remarks (Display range) Operation state Refer to 12-2-1. Detail Contents in Request Code. – Compressor-Operating current (rms) 0–50 Compressor-Accumulated operating time 0–9999...
  • Page 93 Description Request content Unit Remarks (Display range) Indoor unit-Control state – Refer to 12-2-1.Detail Contents in Request Code. Outdoor unit-Control state – Refer to 12-2-1.Detail Contents in Request Code. Compressor-Frequency control state Refer to 12-2-1.Detail Contents in Request Code. – Outdoor unit-Fan control state Refer to 12-2-1.Detail Contents in Request Code.
  • Page 94 Description Request content Unit Remarks (Display range) Error history 1 (latest) Displays error history. (" --" is displayed if no history is present.) Code Error history 2 (second to last) Displays error history. (" --" is displayed if no history is present.) Code Error history 3 (third to last) Displays error history.
  • Page 95 Description Request content Unit Remarks (Display range) Indoor-Fan operating time 0–9999 1 hour (After filter is reset) Indoor-Total operating time 0–9999 10 hours (Fan motor ON time) Indoor fan output value (Sj value) 0–255 Fan control data – For indoor fan phase control Indoor fan output value "...
  • Page 96 12-2-1. Detail Contents in Request Code [Operation state] (Request code :" 0") Relay output state Power currently Data display Display Compressor Four-way valve Solenoid valve supplied to compressor – – – – Relay output state Operation mode Operation mode Display Operation mode STOP •...
  • Page 97 [Fan control state] (Request code :" 53 ") Data display Fan step correction value by heatsink temperature overheat prevention control Fan step correction value by cool condensation temperature overheat prevention control Display Correction value − (minus) − 1 [Actuator output state] (Request code :"54") Data display Actuator output state 1 Actuator output state 2...
  • Page 98 [Contact demand capacity] (Request code : " 61") Setting content Data display Display Setting value Setting content 100% [External input state] (Request code : "62") Input state : Input present Data display Contact demand Silent mode Spare 1 Spare 2 Display Input state input...
  • Page 99 [Indoor unit – Capacity setting information] (Request code : "163") Data display Display Capacity setting state Display Capacity setting state See the table on the right. 35, 36 [Wireless pair No. (indoor control board side) setting] (Request code :" 165") Data display Display Pair No.
  • Page 100 EASY MAINTENANCE FUNCTION 13-1. SMOOTH MAINTENANCE 13-1-1. <PAR-4xMAA ("x" represents 0 or later)> Maintenance data, such as the indoor/outdoor unit’s heat exchanger temperature and compressor operation current can be displayed with “Smooth maintenance”. This cannot be executed during test operation. Depending on the combination with the outdoor unit, this may not be supported by some models.
  • Page 101 The operation data will appear. Smooth maintenance Cool Ref. address The Compressor-Accumulated operating (COMP. run) time is 10-hour unit, COMP. current COMP. run time and the Compressor-Number of operation times (COMP. ON/OFF) is a 100- times COMP. On / Off time unit (fractions discarded).
  • Page 102 <Guide for operation condition> Checkpoints Enter the temperature differences between into the graph given below. Operation state is determined according to the plotted areas on the graph. For data measurements, set the fan speed to "Hi" before activat ing maintenance mode. Inspection item Result Classification...
  • Page 103 DISASSEMBLY PROCEDURE PUZ-ZM200YKA.UK PUZ-ZM250YKA.UK : Indicates the visible parts in the photos/figures. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the service panel and top panel Photo 1 Top panel fixing screws Top panel (1) Remove the service panel fixing screws (4 for front/ 5 x 12), then slide the service panel downward to remove it.
  • Page 104 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the electrical parts box Photo 4 (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) Electrical parts box (3) Disconnect the power supply cable from terminal block. Controller (4) Disconnect the indoor/outdoor connecting wire from ter- circuit board minal block.
  • Page 105 OPERATING PROCEDURE PHOTOS/FIGURES 4. Disassembling the electrical parts box Photo 5 Controller Cont base circuit board (C.B.) (1) Disconnect all the connectors on the controller circuit board. (2) To remove the controller circuit board, release it from the support. (3) Remove cont base fixing screws (2 for front/ 4 x 10) and clip.
  • Page 106 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the thermistor <Ambient> (TH7) Photo 11 Lead wire of thermistor <Ambient> (TH7) (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Disconnect the connector TH7/6 (RED) on the controller circuit board in the electrical parts box.
  • Page 107 OPERATING PROCEDURE PHOTOS/FIGURES Photo 13 8. Removing the 4-way valve coil (21S4), LEV coil (LEV(A)/ LEV(B)) and lead wire for high pressure switch. (1) Remove the electrical parts box. (See Photo 4) (2) Loosen the clamp for the lead wire on separator. [Removing the lead wire for high pressure switch] High pressure (3) Disconnect the lead wire from the high pressure switch.
  • Page 108 OPERATING PROCEDURE PHOTOS/FIGURES 10. Removing the compressor (MC) Photo 14 (1) Remove the service panel. (See Photo 1) Ball valve fixing (2) Remove the top panel. (See Photo 1) Stop valve screws (3) Remove the electrical parts box. (See Photo 4) fixing screws Valve bed (4) Remove the cover panel (front).
  • Page 109 OCH738...
  • Page 110 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2020 MITSUBISHI ELECTRIC CORPORATION Published: Mar. 2020 No.OCH738 Made in Japan Specifications are subject to change without notice.

This manual is also suitable for:

Mr.slim puz-zm250ykaPuz-zm200yka.ukPuz-zm250yka.uk

Table of Contents