Page 2 - When installing and moving the air conditioner to another; Before installation and electric work; Symbols used in the text; ELV : Please pay attention to electric shock because this; Safety precautions; site, do not charge it with a refrigerant different from the
- Inadequate connection and fastening may generate heat and cause a fire. • Prepare for typhoons and other strong winds and earth-quakes and install the unit at the specified place.- Improper installation may cause the unit to topple and result in injury. • Always use an air cleaner, humidifier, ele...
Page 3 - Contents
Contents 1 COMPONENT OF EQUIPMENT 1 [1] Appearance of Components 1 [2] Refirigerant Circuit Diagram and Thermal Sensor Standard operation data iger 6 [3] PUHY-80, 100TMU-A ELECTRICAL WIRING DIAGRAM 79 [4][5] Function of dip SW and rotary SW 11 2 TEST RUN 15 [1] Before Test Run 15 [2] Test Run Method...
Page 5 - Rear Controller Box
Rear Controller Box INV board MAIN board Choke coil(L2) Interrigent Power Module(IPM) Magnetic contactor(52C) Capacitor (C1)(Smoothing capacitor) Gate Amplifier board(G/A board) Diode stack(DS) Power board Terminal block(TB7)Transmission Terminal block (TB3) Transmission Terminal block (TB1) Power s...
Page 6 - MAIN board; CN51 Indication distance
MAIN board CNS1 M-NET Transmission (DC30V) CNS2 M-NET Transmission (Centralized control) (DC30V) CN40 M-NET TransmissionPower supply CNVCC3 Powersource for contorl 1 - 2 DC30 V 1 - 3 DC30 V 4 - 6 DC12 V 5 - 6 DC5 V CN51 Indication distance 3 - 4 Compressor ON/Off 3 - 4 trouble LD1Service LED CNRS53S...
Page 7 - INV board
INV board CNDC2 1 - 3 DC310 V CN15V2Power supply IPM control 1 - 2 DC15 V 5 - 6 DC15 V 9 - 0 DC15 V C - D DC15 V CNL2Choke coil CNRS2 Serial transmission to MAIN board CNAC2Power source 1 L2 5 N CNFAN Control for MF1 CN52C Control for 52C CNVCC2powersupply CNCT CNVCC4 CNTH CNDR2IPM controlsignal SW1...
Page 8 - Power board
G/A board Power board DC310V CNDC1 1 - 3 DC310V CN15V1Power SupplyIPM control 1 - 2 DC15V 5 - 6 DC15V 9 - 0 DC15V C - D DC15V CNDR1IPM control signal - 5 -
Page 9 - Refirigerant Circuit Diagram and Thermal Sensor; High
[2] Refirigerant Circuit Diagram and Thermal Sensor 1 PUHY-80TMU-A, 100TMU-A TH1 TH6 TH7 TH8 TH5 TH2 O/S 63HS CJ1 Comp HEXF HEXB SCC LEV1 ST7 BV2 ST2 Indoor Unit BV1 ST1 CJ2 CV1 ST6 SV1 CP1 SV2 SLEV SA MA CP2 63H High pressure safety valve Accumulator - 6 -
Page 12 - Standard operation data; Condition
[4] Standard operation data 1 Cooling operation 75 81 111 157 Discharge (TH1) Heat exchanger outlet (TH5) Inlet Accumulator Outlet Suction (Comp) low pressure saturationtemperature (TH2) Shell bottom (Comp) SCC outlet (TH7) Bypass outlet (TH8) LEV inlet Heat exchanger outlet Outdoor units Items Cond...
Page 14 - Function of dip SW and rotary SW; If the address is set from 01 to 50, it automatically becomes 100.
[5] Function of dip SW and rotary SW (1) Outdoor unit Switch Function Function According to Switch Operation Switch Set Timing When Off When On When Off When On Unit Address SettingFor self diagnosis/operation monitoring – Centralized ControlSwitchDeletion of connectioninformation. Deletion of error...
Page 18 - TEST RUN; Check points before test run; ing it with a DC500V megger. Do not run if it is lower than 2M; Caution at inverter check; the instructions shown below.
TEST RUN [1] Before Test Run (1) Check points before test run 1 Neither refrigerant leak nor loose power source/ transmission lines should be found, if found correct immediately. 2 Confirm that the resistance between the power source terminal block and the ground exceeds 2M Ω by measur- ing it with ...
Page 19 - Insulation pipe
(3) Check points for test run when mounting options (4) Attention for mounting drain water pump mechanism Check point Local remote controller displays codeNo. “2503”, and the mechanism stops. No overflow from drain pan. Drain water comes out by operation ofdrain pump. Sound of pump operations is hea...
Page 20 - Check points for system structure
Trouble Not operate. Not cool (at cooling). Not heat (at heating). Not cool, not heat, error stop. Condensation drip in piping. Not cool, not heat, error stop. Water leak, condensation drip in drain piping. Error stop, not operate. Electric shock. Error stop, not operate. Classification Installation...
Page 23 - Switch function; ii
3 GROUPING REGISTRATION OF INDOOR UNITS WITH M-NET REMOTE CONTROLLER (1) Switch function • The switch operation to register with the remote controller is shown below: Registration/ordinary modeselector switch Registration/ordinarymode selection switch Switch to assign indoorunit address Registration...
Page 24 - Attribute display of unit
(2) Attribute display of unit • At the group registration and the confirmation/deletion of registration/connection information, the type (attribute) of the unit is displayed with two English characters. Display Type (Attribute) of unit/controller Indoor unit connectable to remote controller Outdoor ...
Page 26 - A B
2) Method of retrieval/confirmation 2 1 2 • Retrieval/confirmation of group registration information on indoor unit ............... The address of the indoor unit being registered on the remote controller is displayed. [Operation procedure] With the remote controller under stopping or at the display...
Page 27 - Press the switch for confirmation (
3) Method of deletion • Deletion of group registration information of indoor unit ...................................... [Operation procedure] With the remote controller under stopping or at the display of “HO”, continuously press the FILTER + LOUVER button ( + ) at the same time for 2 seconds to ch...
Page 29 - CONTROL; Control of Outdoor Unit; Initial processing
4 CONTROL [1] Control of Outdoor Unit (1) Initial processing • When turning on power source, initial processing of microcomputer is given top priority. • During initial processing, control processing corresponding to operation signal is suspended. The control processing is resumed after initial proc...
Page 30 - Frequency control
–30– (4) Frequency control • Depending on capacity required, capacity control change and frequency change are performed to keep constant evaporation temperature (0˚C) in cooling operations, and high pressure (18kg/cm 2 G) in heating operation. • Frequency change is perfprmed at the rate of 3Hz/secon...
Page 31 - Defrost operation control
28˚C (82.4 ° F) or more 111 111 157 20 ~ 30˚C (68~86 ° F) 87 87 134 22˚C (71.6 ° F) or less 64 64 87 3 Back up of frequency control by bypass valve During 20Hz operations, frequency is backed up by turning on (opening) bypass valve (SV2). • Cooling During 20Hz operations 3 minutes after starting com...
Page 32 - do not stop until expected defrosting activities are completed.; Control of liquid level detecting heater; minute after starting compressor.; Judgement of refrigerant amount; TdSH; Cooling
5) Change in number of operating indoor units during defrosting operations • In case number of operating indoor units changes during defrosting operations, the defrosting operations continue, and control of unit number change is performed after the defrosting operations are finished. • Even in case ...
Page 34 - Operation Flow Chart
YES NO YES NO YES YES NO NO 2 2 [2] Operation Flow Chart (1) Outdoor unit (Cooling, heating modes) Note: 1 For about 2 minutes after turning on power source, address and group information of outdoor unit, indoor unit, and remo tecontroller are retrieved by remote controller, during which "HO"...
Page 36 - Cooling operation
YES NO YES YES NO NO (3) Cooling operation Note : 1 Indoor unit fan operates at set notch in cooling operation regardless of thermostat ON/OFF. Cooling operation 4-way valve OFF Indoor unit fan operations Test run start Thermostat ON Note: 1 3-minute restart pre- vention 1. Inverter output 0Hz 2. In...
Page 38 - Dry operation
YES NO YES YES NO (5) Dry operation Normal operations Thermostat ON Stop Dry operations 4-way valve OFF Thermostat ON Test run start Inlet temp.> = 18˚C Note: 2 Note: 1 1. Indoor unit fan stop 2. Inverter output 0Hz 3. Indoor unit LEV, oil return LEV, Subcool bypass LEV fully closed 4. Solenoid v...
Page 39 - Outdoor unit; List of Major Component Functions
Low pressure shell scrolltype with capacity controlmechanismWinding resistance:Each phase 0.107 Ω (20˚C) Setting 30kg/cm 2 G OFF R 120 =7.465k Ω B 25/120 =4057 Rt =7.465exp{4057( – )} R 0 =15k Ω B 0/100 =3460 Rt =15exp{3460( – )} R 50 =17k Ω B 25/50 =4170 Rt = Com- MC pressor Pressure 63HS sensor Pr...
Page 42 - REFRIGERANT AMOUNT ADJUSTMENT; [1] Refrigerant Amount and Operating Characteristics; Symptom; Excessive refrigerant replenishment
REFRIGERANT AMOUNT ADJUSTMENT 5 Clarify relationship between the refrigerant amount and operating characteristics of CITY MULTI, and perform service activities such as decision and adjustment of refrigerant amount on the market. [1] Refrigerant Amount and Operating Characteristics The followings are...
Page 43 - Refrigerant Volume Adjustment Operation
(2) Refrigerant Volume Adjustment Operation 1) Operating Characteristics Refrigerant Volume Characteristic items related to operating characteristics and the refrigerant volume are shown below. If the number of indoor units in operation increases during cooling, the required volume of refrigerant te...
Page 45 - Operation
3) Refrigerant Volume Adjustment Mode Operation 1 Procedure TH1 Self-diagnosis Switch TH5 Self-diagnosis Switch TH7 Self-diagnosis Switch Tc Self-diagnosis Switch Using these, judge TH1, Tc - TH5 and Tc - TH7. 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 ...
Page 47 - TROUBLESHOOTING; Pressure Sensor; Judging Failure; High Pressure; Connector
6 TROUBLESHOOTING [1] Principal Parts Pressure Sensor (1) Judging Failure 1) Check for failure by comparing the sensing pressure according to the high pressure sensor and the pressure gauge pressure. Turn on switches 1, 3, 5, 6 of the digital display select switch (SW1) as shown below, and the senso...
Page 48 - circuit and the sound of the refrigerant.
Solenoid Valve (SV1, SV2) Check if the control board’s output signals and the operation of the solenoid valves match. Setting the self-diagnosis switch (SW1) as shown in the figure below causes the ON signal of each relay to be output to the LED’s. Each LED shows whether the relays for the following...
Page 49 - Outdoor LEV
Outdoor LEV The valve opening angle changes in proportion to the number of pulses. (Connections between the outdoor unit’s MAIN board and SLEV, LEV1 (outdoor electronic expansion valve)) Pulse Signal Output and Valve Operation LEV Valve Closing and Valve Opening Operations ✻ When the power is switch...
Page 50 - Judgment Methods and Likely Failure Mode
Judgment Methods and Likely Failure Mode Caution: The specifications of the outdoor unit (outdoor LEV) and outdoor units (indoor LEV) differ. For this reason, there ar e cases where the treatment contents differ, so follow the treatment specified for the appropriate LEV as indicated in the right col...
Page 53 - Trouble and remedy of remote controller
1 2 Despite pressing ofremote controllerswitch, operationdoes not start with noelectronic sound. (No powering signal appears.) At about 10 secondsafter turning remotecontroller operationswitch ON, thedisplay distinguishesand the operationstops. 1) M-NET transmission power source is not supplied from...
Page 56 - Transmission Power Circuit (30 V) Check Procedure
Transmission Power Circuit (30 V) Check Procedure If “ ” is not displayed by the remote control, investigate the points of the trouble by the following procedure and correct it. DC24~30 V Except the above-mentioned Connector disconnected Except the above-mentioned DC24~30 V Except the above-mentione...
Page 57 - Investigation of transmission wave shape/noise; The figure should be 104
(6) Investigation of transmission wave shape/noise Control is performed by exchanging signals between outdoor unit, indoor unit and remote controller by M-NET trans- mission. If noise should enter into the transmission line, the normal transmission will be hindered causing erroneous operation. 1) Sy...
Page 59 - Treatment of Inverter and Compressor Troubles
4) Treatment of Inverter and Compressor Troubles If the compressor does not work when error codes 4240 or 4250 are detected, determine the point of malfunction by following the steps in the appropriate sections on the pages starting from page 75, then perform the procedures below. 1 If it was kept o...
Page 61 - [Caution at replacement of inverter parts]
6) Individual Parts Failure Judgment Methods. [Caution at replacement of inverter parts] 1 The IPM and G/A board should be replaced together at the same time. 2 Fully check wiring for incorrect and loose connection. 3 Coat the grease for radiation provided uniformly onto the radiation surface of IPM...
Page 62 - To compressor; board
Model PUHY-80TMU-A, 100TMU-A To compressor Red White Blue Blue Red To capacitor (C1) board - 59 -
Page 65 - Mechanical
(1) Mechanical Checking code Meaning, detecting method Cause Checking method & Countermeasure Serialtransmissiontrouble Dischargetemperaturetrouble (Outdoor unit) If serial transmission cannot beestablished between the MAINand INV boards 1. W h e n 1 4 0 ° C o r m o r e d i s - charge temperatur...
Page 66 - Low pressure saturation temperature trouble
Checking code Meaning, detecting method Cause Checking method & Countermeasure 1. 2. When –40 ° C or less temp. is detected again (the secondtime) within 30 minutes afterstop of outdoor unit, errorstop is observed with codeNo s . " 1 1 1 1 " o r displayed. 3. W h e n – 4 0 ° C o r l e s ...
Page 76 - Thermal Sensor Error, Outdoor Unit
Checking code Meaning, detecting method Cause Checking method & Countermeasure <Other than THHS> 1 A short in the thermistor oran open circuit was sensed.The outdoor unit switches tot h e t e m p o r a r y s t o p m o d ewith restarting after 3 min-utes, then if the temperaturedetected by ...
Page 77 - Multiple address error
Checking code Meaning, detecting method Cause Checking method & Countermeasure 6600 6602 Multiple address error Transmission from units withthe same address is detected. Note: T h e a d d r e s s / a t t r i b u t eshown on remote con-troller indica tes the con-t r o l l e r w h i c h h a s d e ...
Page 81 - (2) Group operation system using plural refrigerant
Checking code Meaning, detecting method No ACK error When no ACK signal is detected in 6 continuous times with 30 second interval by transmission side controller, the transmission side detects error. Note: The address/attribute shown on remote controller indicates the controller not providing the an...
Page 83 - No relation with system
Checking code Meaning, detecting method No ACK error When no ACK signal is detected in 6 continuous times with 30 second interval by transmissionside controller, the transmission side detects error. Note: The address/attribute shown on remote controller indicates the controller not providing the ans...
Page 84 - No response error; System error; Total capacity error
Checking code 6608 1) At the collision of mutual transmis- s i o n d a t a w h e n t r a n s m i s s i o nwiring is modified or the polarity ischanged while turning the powers o u r c e o n , t h e w a v e s h a p echanges detecting error. 2) Repeating of transmission error due to noise. 3) Damping ...
Page 85 - Connected unit count over
7102 7105 7111 Connected unit count over Address setting error• Erroneous setting of Outdoor unit address Trouble source : Outdoor unit Remote control sensor errorError not providing the tem-perature designed to remotecontroller sensor. Trouble source : Indoor unit 2) The Outdoor unit address is bei...
Page 86 - LED Monitor Display
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 0000000000 1000000000 0100000000 1100000000 0010000000 1010000000 0110000000 1110000000 0001000000 1001000000 0101000000 1101000000 0011000000 1011000000 0111000000 1111000000 0000100000 1000100000 0100100000 1100100000 0010100000 [3] LED Monitor ...
Page 94 - AIR CONDITIONERS CITY MULTI Series Y; Models; Service Handbook; New publication effective March 2004.; Ser
AIR CONDITIONERS CITY MULTI Series Y Models PUHY-80TMU-A, 100TMU-A Service Handbook Service Handbook PUHY-80TMU-A, 100TMU-A Issued in March 2004 New publication effective March 2004. Specifications subject to change without notice. Ser vice Handbook PUHY-80TMU-A, 100TMU-A
Page 95 - 400 Lawrenceville Suwanee Road; Specifications are subject to change without notice.
3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904 www.mrslim.com Specifications are subject to change without notice.
