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4-2. Normal Operation (COOL Mode) - Low Outside Air Temperature (Roughly Below 20 °C) Header unit (MMY-MAP1604*) Follower unit (MMY-MAP1204*) FM FM TO TO PMV1 PMV2 PMV4 TE2 TE1 TE1 SV 4-Way valve PMV1 PMV2 SV5 4-Way valve Pressure sensor (high pressure) TS1 TS1 TL SV3D SV O.S. SV6 SV SV SV2 Pressure sensor (low pressure) TL Pressure sensor (high pressure) SV3D SV O.S. Pressure sensor (low pressure) SV SV2 Liquid tank SV41 SV TD1 SV3C HPS SV TK4 Compressor 1 HPS Compressor 2 SV SV42 TD2 HPS Compressor 3 SV Accumulator SV43 TD3 Liquid tank SV SV41 TD1 HPS SV3C Compressor A3 1 SV SV SV42 TD2 HPS TK4 Compressor 2 Accumulator TK1 TK2 TK1 TK2 TK3 SV3E SV TK5 SV TK5 SV3E SV SV3F SV3A SV SV3A SV SV SV3B SV SV3B Balance pipe Liquid pipe Gas pipe Gas pipe Liquid pipe PMV PMV PMV PMV TC2 TC1 TC2 TC1 TC2 TC1 TC2 TC1 TCJ TCJ TCJ TCJ Indoor unit High-pressure gas or condensate liquid refrigerant Evaporative gas refrigerant (low-pressure gas) Normal refrigerant line Note: With a 14 or 16 HP outdoor unit, the main heat exchanger and sub-heat exchanger may be switched over depending on the outside temperature and air conditioning loads. Note: The "header unit" is the outdoor unit to which the indoor-outdoor communication line is connected. All other outdoor units are called "follower units". (The diagram shows a 28 HP system (16 HP + 12 HP) as an example.) 65
4-3. Normal Operation (HEAT Mode) Header unit (MMY-MAP1604*) Follower unit (MMY-MAP1204*) FM FM TO TO PMV1 PMV PMV4 TE2 TE1 TE1 SV PMV1 SV5 4-Way valve PMV2 4-Way valve Pressure sensor (high pressure) TS1 TS1 TL SV3D SV O.S. SV6 SV SV SV2 Pressure sensor (low pressure) TL Pressure sensor (high pressure) SV3D SV O.S. Pressure sensor (low pressure) SV SV2 Liquid tank SV41 SV TD1 SV3C HPS SV TK4 Compressor 1 HPS Compressor 2 SV TD2 SV42 HPS Compressor 3 SV Accumulator SV43 TD3 Liquid tank SV SV41 TD1 HPS SV3C Compressor A3 1 SV SV SV4 2 TD2 HPS TK4 Compressor 2 Accumulator TK1 TK2 TK1 TK2 TK3 SV3E SV TK5 SV TK5 SV3E SV SV3F SV3A SV SV SV3B SV3A SV SV SV3B Balance pipe Liquid pipe Gas pipe Gas pipe Liquid pipe PM PMV PMV PMV TC2 TC J TC1 TC2 TCJ TC1 TC2 TCJ TC1 TC TCJ TC1 Indoor unit High-pressure gas or condensate liquid refrigerant Evaporative gas refrigerant (low-pressure gas) Normal refrigerant line Note: The "header unit" is the outdoor unit to which the indoor-outdoor communication line is connected. All other outdoor units are called "follower units". (The diagram shows a 28 HP system (16 HP + 12 HP) as an example.) 66
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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
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Use specified parts. When any of th
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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 and 62: 3 Refrigerant Piping Systematic Dra
Page 63 and 64: Explanation of Functional Parts Fun
Page 65: 4 Combined Refrigerant Piping Syste
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
Page 75 and 76: NO. Item Specification outline Rema
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
Page 113 and 114: 6-8-3. Snowfall Fan Control Header
Page 115 and 116: 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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