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Outdoor Unit (14, 16HP) Model: MMY-MAP1404, MMY-MAP1604 M Right side Fan motor Fan Main heat exchanger (TO) PMV1 PMV2 Sub heat exchanger at right side Left side PMV4 (TE2) (TE1) Main heat exchanger Sub heat exchanger at left side Check valve Check valve 4-way valve High-pressure sensor (TS1) (SV6) SV SV (TL) (SV3D) Oil separator (SV2) Low-pressure sensor Fusible plug FP SV (SV41) Liquid tank SV (TD1) (SV3C) High-pressure switch SV Highpressure switch SV (TD2) (SV42) High-pressure switch SV (SV43) (TD3) Accumulator Compressor 1 (Inverter) (TK4) Compressor 2 (Inverter) Compressor 3 (Inverter) (TK1) (TK2) (TK3) SV (TK5) (SV3E) Oil header SV (SV3F) (SV3A) SV Check valve SV (SV3B) Check valve Liquid side packed valve Gas side service valve Balance pipe packed valve Symbol SV Solenoid valve Capillary tube Check valve Check joint Strainer Temperature sensor Distributor 61
Explanation of Functional Parts Functional part name Solenoid valve 4-way valve Pulse motor valve Oil separator Temp. Sensor SV3A SV3B SV3C SV3D SV3E SV3F SV2 SV41 SV42 SV43 SV5 SV6 PMV1, 2 PMV4 TD1 TD2 TD3 TS1 TE1 TE2 TK1, TK2 TK3, TK4 TK5 TL TO Pressure sensor Low pressure sensor Heater Balance pipe High pressure sensor Compressor case heater Accumulator case heater (Connector CN321: White) 1) Supplies oil reserved in the oil header during ON time. Functional outline (Connector CN321: White) 1) Returns oil supplied in the balance pipe to the compressor. (Connector CN321: White) 1) Pressurizes oil reserved in the oil header during ON time. (Connector CN322: White) 1) Reserves oil in the oil separator during OFF time. 2) Returns oil reserved in the oil separator to the compressor during ON time. (Connector CN322: White) 1) Turns on during operation and balances oil between compressors. (Connector CN323: White) 1) Controls oil level balances between compressors. (Hot gas bypass) (Connector CN311: White) 1) Low pressure release function 2) High pressure release function 3) Gas balance function during stop time (Start compensation valve of compressor) (SV41 Connector CN312: Blue, SV42 Connector CN312: Blue, SV43 Connector CN313: Red) 1) For gas balance start 2) High pressure release function 3) Low pressure release function (Connector CN314: White) 1) Preventive function for high-pressure rising in heating operation (Connector CN315: White) 1) Liquid bypass function for discharge temperature release (cooling bypass function) (Connector CN317:Blue) 1) Cooling/heating exchange 2) Reverse defrost (Connector CN300, 301: White) 1) Super heat control function in heating operation 2) Liquid line shut-down function while follower unit stops 3) Under cool adjustment function in cooling operation 4) Exchange function between main and sub exchangers in cooling operation (Connector CN303: Red) 1) Exchange function between main and sub exchangers in cooling operation 2) Preventive function for high-pressure rising in heating operation 1) Prevention for rapid decreasing of oil (Decreases oil flowing to the cycle) 2) Reserve function of surplus oil (TD1 Connector CN502: White, TD2 Connector CN503: Pink, TD3 Connector CN504: Blue) 1) Protection of compressor discharge temp. 2) Used for discharge temperature release (Connector CN505: White) 1) Controls PMV super heat in heating operation (Connector CN520: Green) 1) Controls defrost in heating operation 2) Controls outdoor fan in heating operation (Connector CN521: Red) 1) Controls exchange function between main and sub exchangers (TK1 Connector CN531: Black, TK2 Connector CN532: Green, TK3 Connector CN533: Red, TK4 Connector CN534: Yellow, TK5 Connector CN535: Red) 1) Judges oil level of the compressor (Connector CN523: White) 1) Detects under cool in cooling operation (Connector CN507: Yellow) 1) Detects outside temperature (Connector CN501: Red) 1) Detects high pressure and controls compressor capacity 2) Detects high pressure in cooling operation, and controls the fan in low ambient cooling operation 3) Detects under cool in indoor unit in heating operation (Connector CN500: White) 1) Detects low pressure in cooling operation and controls compressor capacity 2) Detects low pressure in heating operation, and controls the super heat (Compressor 1 Connector CN331: White, Compressor 2 Connector CN332: Blue, Compressor 3 Connector CN333: Black) 1) Prevents liquid accumulation to compressor (Connector CN334: Red) 1) Prevents liquid accumulation to accumulator 1) Oil balancing in each outdoor unit 62
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AIR CONDITIONER (MULTI TYPE) SERVIC
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4-1. Normal Operation (COOL Mode /
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9-4. Cooling-Season Outdoor Unit Ba
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Definition of Protective Gear When
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Precautions for Safety The manufact
Page 11 and 12: Use specified parts. When any of th
Page 13 and 14: Only a qualified installer (*1) or
Page 15 and 16: Specifications Model MMY-MAP0804HT8
Page 17 and 18: Carrying in the Outdoor Unit CAUTIO
Page 19 and 20: Selection of Pipe Size Coupling siz
Page 21 and 22: Table 2 Standard type High Efficien
Page 23 and 24: 4. Tools (1) Required Tools for R41
Page 25 and 26: Models: MMY-MAP1404* and MAP1604 *
Page 27 and 28: 1-2-2. Compact 4-way Cassette Type
Page 29 and 30: 1-2-4. 1-way Air Discharge Cassette
Page 31 and 32: 1-2-6. 2-way Air Discharge Cassette
Page 33 and 34: 1-2-8. Concealed Duct High Static P
Page 35 and 36: 1-2-9. Slim Duct Type Models: MMD-A
Page 37 and 38: 1-2-11.High Wall Type 2 series Mode
Page 39 and 40: 1-2-13.Floor Standing Cabinet Type
Page 41 and 42: 1-2-15.Floor Standing Type Models:
Page 43 and 44: Models: MMD-AP0721HFE and MMD-AP096
Page 45 and 46: 2-2. Outdoor Unit (60Hz model: MMY-
Page 47 and 48: 2-4. Outdoor Inverter (60Hz model:
Page 49 and 50: 2-way Air Discharge Cassette Type M
Page 51 and 52: Concealed Duct High Static Pressure
Page 53 and 54: Floor Standing Type Model MMF-AP 01
Page 55 and 56: 14, 16HP Model: MMY-MAP1404* , MAP1
Page 57 and 58: Outdoor Unit (14, 16HP) Model: MMY-
Page 59 and 60: 2-8-2. Inverter P.C. board for comp
Page 61: 3 Refrigerant Piping Systematic Dra
Page 65 and 66: 4 Combined Refrigerant Piping Syste
Page 67 and 68: 4-3. Normal Operation (HEAT Mode) H
Page 69 and 70: 4-5. Emergency Operation (Heating O
Page 71 and 72: 5 Control Outline Indoor Unit Cont
Page 73 and 74: NO. Item Specification outline Rema
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Page 77 and 78: Outdoor Unit Item Description of op
Page 79 and 80: Item Description of operation, nume
Page 85 and 86: 1 Cooling operation under low outsi
Page 87 and 88: Central control remote controller (
Page 89 and 90: 6-1-2. When Wireless Remote Control
Page 91 and 92: Central control remote controller (
Page 93 and 94: X Y DC5V Power supply circuit Main
Page 95 and 96: 6-2. Indoor Printed Circuit Board M
Page 97 and 98: MCC-1403 Power supply Power supply
Page 99 and 100: 6-4. Test Operation of Indoor Unit
Page 101 and 102: Function CODE No. (DN Code) Table (
Page 103 and 104: Type DN code “10” Value Type Mo
Page 105 and 106: ▼ Ventilating fan control from re
Page 107 and 108: 6-7. Applied control for Outdoor Un
Page 109 and 110: (2) Indoor unit setup method for pr
Page 111 and 112: 6-8-1. Power peak-cut Control (Stan
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6-8-3. Snowfall Fan Control Header
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6-8-6. Operation Mode Selection Con
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6-8-8. Compressor Operation Output
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7 TEST OPERATION 7-1. Procedure and
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(2) In the case that a central cont
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• Check the additional amount of
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7-4. Address Setup This product req
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(Example) Controlling 2 or more ref
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10 Set the central control address.
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Manual address setup from the remot
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To find an indoor unit’s position
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4 Push the TIME / buttons repeatedl
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2) Turn on dip switch 2 of SW30 on
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7-4-4. Check after Address Setup wh
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7-5-2. Operation from the indoor re
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Miswiring example Figure Remote con
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7-6-2. Cooling/Heating Test Operati
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(2) Test operation START Test opera
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7-7. Service Support Function 7-7-1
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7-7-2. Function to Start/Stop (ON/O
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(2) Heating test operation function
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(4) Individual start/stop (ON/OFF)
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(2)Clearing error by using switches
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7-7-5. Pulse Motor Valve (PMV) Forc
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7-7-8. Fan Operation Check in Outdo
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7-7-10.Manual Adjustment Function o
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7-7-11.Monitor Function of Remote C
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8 TROUBLESHOOTING 8-1. Overview (1)
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(Error detected by main remote cont
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F12 - F12 ALT F15 - F15 ALT F16 - F
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(Errors detected by IPDU featuring
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Using TCC-LINK central control remo
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Light block Check code Cause of fau
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8-4. Check Codes Displayed on Remot
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Main remote controller Check code O
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Main remote controller P04 P05 P07
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Errors Detected by TCC-LINK Central
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8-5. Diagnosis procedure for each c
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Check code Check code name Cause Ch
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Check code Check code name Cause [E
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Check code Check code name Cause [E
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Check code Check code name Cause [F
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Check code Check code name Cause [H
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(*3) Check for solenoid valve of al
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Check code Check code name Cause [L
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Check code Check code name Cause [P
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(C) Heating operation Does heating
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(1)Display of System Information (D
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(3)Display of Outdoor Cycle Data (D
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(5)Display of Indoor Unit Informati
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8-8. Leakage/Clogging of Refrigerat
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List of Check Codes Generated upon
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8-9. Sensor Characteristics Outdoor
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Indoor TC1 sensor 200 150 Resistanc
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240 Outdoor Unit ▼ Ps sensor char
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9-2. Compressor Backup Operation Se
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(6) Turn on the power supply to all
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(8) Set Bits 1 and 2 of SW30 on the
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10OUTDOOR UNIT REFRIGERANT RECOVERY
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[Setup of failed outdoor unit] (13)
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[Setup of outdoor units other than
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10-3.Work procedure after Repair Wh
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11-2.Replacement of Compressors
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[When replacing normal as well as f
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11-3.Check Procedure to Search Caus
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Check items and procedures to follo
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No. Part to be replaced Work proced
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13P.C. BOARD EXCHANGE PROCEDURES I
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Procedure 1: Reading Setting Data f
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Procedure 3: Writing Setting Data i
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CODE No. list (Example) CODE No. (D
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13-2-3.Interface board (MCC-1606) r
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(6) Set the dip switch (SW800) sett
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13-2-6.Noise Filter P.C. Board (MCC
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(7) Install the service P.C. boards
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SMMS-i OUTDOOR UNIT MMY-MAP1404HT8(
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REFRIGERATION CIRCUIT DIAGRAM M MOT
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Ref. No. Part No. Description MAP08
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SMMS-i INV SERVICE PARTS LIST MMY-M
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SMMS-i OUTDOOR UNIT MMY-MAP0804T8(Z
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SMMS-i OUTDOOR UNIT MMY-MAP0804T8(Z
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SMMS-i OUTDOOR UNIT MMY-MAP1404T8-S
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WARNINGS ON REFRIGERANT LEAKAGE Che
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