MULTI TYPE

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Checklist 1 • Using Checklist 1, check that there are no problems with the installation work. Is the capacity of the circuit breaker (Earth leakage breaker) appropriate? Is the gauge of the power cable correct? Outdoor total capacity A Header unit (A) A Indoor unit A Follower unit (B) A Follower unit (C) A Follower unit (D) A Header unit (A) mm 2 Indoor unit mm 2 Follower unit (B) mm 2 Follower unit (C) mm 2 Follower unit (D) mm 2 Is the control Indoor-outdoor connection terminals (U1, U2) communication line Outdoor-outdoor connection terminals (U5, U6) correct? Central control system connection terminals (U3, U4) Is the power of indoor units supplied collectively? Is it grounded to earth? Is the resistance sufficient? (10 M or higher) M or higher Is the main power voltage sufficient? (within 380-415 V ±10%) V Is the diameter of connecting pipe correct? Is the branch kit correct? Is the water drain of the indoor unit arranged so that it flows without accumulation? Is the heat insulation of pipes sufficient? (connecting pipes, branch kit) Is there no short circuit of discharge air in the indoor/outdoor units? After an airtightness test of the pipes, are vacuuming and adding of refrigerant executed? Are the valves of all the outdoor units fully opened? Gas side Liquid side Balance side Header unit (A) Follower unit (B) Follower unit (C) Follower unit (D) 121
• Check the additional amount of refrigerant. Checklist 2 Calculate the additional amount of refrigerant from the additional amount of refrigerant (A) by the pipe diameter on the liquid side, the pipe length to be connected, and the corrective amount of refrigerant (C) according to system horsepower. Additional amount of refrigerant = Actual liquid pipe length × Additional amount of refrigerant per 1 m of liquid pipe + Corrective amount of refrigerant according to system horsepower First, enter the total length for each liquid pipe diameter in the following table, and then calculate the additional amount of refrigerant by pipe length. Pipe diameter on the liquid side Standard amount of refrigerant kg/m Total pipe length on each liquid side m Next, refer to the following table for the corrective amount of refrigerant (C) according to system horsepower. Lastly, add the additional amount of refrigerant by pipe length (A) to the corrective amount of refrigerant by combined horsepower (C). This is the final additional amount of refrigerant. If a minus sign is indicated as the result, do not add the refrigerant (= 0 kg). 122 Additional amount of refrigerant pipe diameter on each liquid side kg Ø6.4 0.025 × = kg Ø9.5 0.055 × = kg Ø12.7 0.105 × = kg Ø15.9 0.160 × = kg Ø19.0 0.250 × = kg Ø22.2 0.350 × = kg Additional amount of refrigerant by pipe length (A) kg Standard type High Efficiency type Combined HP (HP) Combined outdoor units (HP) C (Corrective amount of refrigerant) (kg) 8 8HP – – – 1.5 10 10HP – – – 2.5 12 12HP – – – 3.5 14 14HP – – – 8.5 16 16HP – – – 10.5 18 10HP 8HP – – 0.0 20 10HP 10HP – – 3.0 22 12HP 10HP – – 5.0 24 12HP 12HP – – 7.5 26 16HP 10HP – – 8.5 28 16HP 12HP – – 9.5 30 16HP 14HP – – 11.5 32 16HP 16HP – – 12.5 34 12HP 12HP 10HP – 3.0 36 12HP 12HP 12HP – 4.0 38 16HP 12HP 10HP – 6.0 40 16HP 12HP 12HP – 7.0 42 16HP 14HP 12HP – 8.0 44 16HP 16HP 12HP – 10.0 46 16HP 16HP 14HP – 12.0 48 16HP 16HP 16HP – 14.0 16 8HP 8HP – – 0.0 24 8HP 8HP 8HP – -4.0 26 10HP 8HP 8HP – -4.0 28 10HP 10HP 8HP – -2.0 30 10HP 10HP 10HP – 0.0 32 8HP 8HP 8HP 8HP -6.0 34 10HP 8HP 8HP 8HP -6.0 36 10HP 10HP 8HP 8HP -6.0 38 10HP 10HP 10HP 8HP -6.0 40 10HP 10HP 10HP 10HP -5.0 42 12HP 10HP 10HP 10HP -4.0 44 12HP 12HP 10HP 10HP -2.0 46 12HP 12HP 12HP 10HP 0.0 48 12HP 12HP 12HP 12HP 2.0 Additional amount of refrigerant by pipe length (A) kg Corrective amount of refrigerant according to combined horsepower (C) kg Additional amount of refrigerant kg (A) (C)
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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
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Specifications Model MMY-MAP0804HT8
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Carrying in the Outdoor Unit CAUTIO
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Selection of Pipe Size Coupling siz
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Table 2 Standard type High Efficien
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4. Tools (1) Required Tools for R41
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Models: MMY-MAP1404* and MAP1604 *
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1-2-2. Compact 4-way Cassette Type
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1-2-4. 1-way Air Discharge Cassette
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1-2-6. 2-way Air Discharge Cassette
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1-2-8. Concealed Duct High Static P
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1-2-9. Slim Duct Type Models: MMD-A
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1-2-11.High Wall Type 2 series Mode
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1-2-13.Floor Standing Cabinet Type
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1-2-15.Floor Standing Type Models:
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Models: MMD-AP0721HFE and MMD-AP096
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2-2. Outdoor Unit (60Hz model: MMY-
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2-4. Outdoor Inverter (60Hz model:
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2-way Air Discharge Cassette Type M
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Concealed Duct High Static Pressure
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Floor Standing Type Model MMF-AP 01
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14, 16HP Model: MMY-MAP1404* , MAP1
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Outdoor Unit (14, 16HP) Model: MMY-
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2-8-2. Inverter P.C. board for comp
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3 Refrigerant Piping Systematic Dra
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Explanation of Functional Parts Fun
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4 Combined Refrigerant Piping Syste
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4-3. Normal Operation (HEAT Mode) H
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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
Page 113 and 114: 6-8-3. Snowfall Fan Control Header
Page 115 and 116: 6-8-6. Operation Mode Selection Con
Page 117 and 118: 6-8-8. Compressor Operation Output
Page 119 and 120: 7 TEST OPERATION 7-1. Procedure and
Page 121: (2) In the case that a central cont
Page 125 and 126: 7-4. Address Setup This product req
Page 127 and 128: (Example) Controlling 2 or more ref
Page 129 and 130: 10 Set the central control address.
Page 131 and 132: Manual address setup from the remot
Page 133 and 134: To find an indoor unit’s position
Page 135 and 136: 4 Push the TIME / buttons repeatedl
Page 137 and 138: 2) Turn on dip switch 2 of SW30 on
Page 139 and 140: 7-4-4. Check after Address Setup wh
Page 141 and 142: 7-5-2. Operation from the indoor re
Page 143 and 144: Miswiring example Figure Remote con
Page 145 and 146: 7-6-2. Cooling/Heating Test Operati
Page 147 and 148: (2) Test operation START Test opera
Page 149 and 150: 7-7. Service Support Function 7-7-1
Page 151 and 152: 7-7-2. Function to Start/Stop (ON/O
Page 153 and 154: (2) Heating test operation function
Page 155 and 156: (4) Individual start/stop (ON/OFF)
Page 157 and 158: (2)Clearing error by using switches
Page 159 and 160: 7-7-5. Pulse Motor Valve (PMV) Forc
Page 161 and 162: 7-7-8. Fan Operation Check in Outdo
Page 163 and 164: 7-7-10.Manual Adjustment Function o
Page 165 and 166: 7-7-11.Monitor Function of Remote C
Page 167 and 168: 8 TROUBLESHOOTING 8-1. Overview (1)
Page 169 and 170: (Error detected by main remote cont
Page 171 and 172: 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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MULTI TYPE

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