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Check code Display of receiving unit Outdoor 7-segment display Sub-code TCC-LINK central control or main remote controller display Indicator light block Operation Timer Ready Flash Typical fault site Description of error A3-IPDU Fan A3-IPDU Fan 1 2 3 IPDU 1 2 3 IPDU 01 O 0A O O 02 O 0B O O O 03 O O 0C O O L29 04 O 0D O O O L29 SIM Error in number of IPDUs 05 O O 0E O O O 06 O O 0F O O O O 07 O O O Circle (O): 08 O Faulty IPDU 09 O O There are insufficient number of IPDUs (P.C. boards) in inverter box. L30 Detected indoor unit No. (L30) SIM Indoor external error input (interlock) P03 – P03 Outdoor discharge (TD1) ALT temperature error 00: Open phase detected Open phase/power failure P05 01: Compressor 1 P05 ALT Inverter DC voltage (Vdc) 02: Compressor 2 error 03: Compressor 3 MG-CTT error P07 01: Compressor 1 02: Compressor 2 03: Compressor 3 P07 ALT Heat sink overheating error P10 Indoor unit No. detected (P10) ALT Indoor unit overflow P13 – P13 ALT P15 01: TS condition 02: TD condition P17 – P17 ALT P18 – P18 ALT P19 Outdoor unit No. detected P19 ALT P20 – P20 ALT P15 Outdoor liquid backflow detection error ALT Gas leak detection Outdoor discharge (TD2) temperature error Outdoor discharge (TD3) temperature error 4-way valve reversing error Activation of high-pressure protection Indoor unit has been shut down for external error input in one refrigerant line (detected by indoor unit). Outdoor discharge temperature sensor (TD1) has detected abnormally high temperature. Open phase is detected when power is turned on. Inverter DC voltage is too high (overvoltage) or too low (undervoltage). Temperature sensor built into IGBT (TH) detects overheating. Indoor unit has been shutdown in one refrigerant line due to detection of overflow (detected by indoor unit). State of refrigerant cycle circuit indicates liquid backflow operation. Outdoor suction temperature sensor (TS1) detects sustained and repeated high temperatures that exceed standard value. Outdoor discharge temperature sensor (TD2) detects abnormally high temperature. Outdoor discharge temperature sensor (TD3) detects abnormally high temperature. Abnormality in refrigerating cycle is detected during heating operation. High pressure (Pd) sensor detects high pressure that exceeds standard value. MG-CTT: Magnet contactor 171
(Errors detected by IPDU featuring in SMMS-i standard outdoor unit - typical examples) F13 H01 H02 H03 P04 P07 P22 P26 P29 Check code Outdoor 7-segment display Sub-code 01: Compressor 1 02: Compressor 2 03: Compressor 3 01: Compressor 1 02: Compressor 2 03: Compressor 3 01: Compressor 1 02: Compressor 2 03: Compressor 3 01: Compressor 1 02: Compressor 2 03: Compressor 3 01: Compressor 1 02: Compressor 2 03: Compressor 3 01: Compressor 1 02: Compressor 2 03: Compressor 3 0: IGBT circuit 1: Position detection circuit error 3: Motor lockup error 4: Motor current detection C: TH sensor error D: TH sensor error E: Inverter DC voltage error (outdoor fan) Note: Although letters 0 to F appear at locations indicated by “”, please ignore them. 01: Compressor 1 02: Compressor 2 03: Compressor 3 01: Compressor 1 02: Compressor 2 03: Compressor 3 TCC-LINK central control or main remote controller display F13 H01 H02 H03 P04 P07 Display of receiving unit Indicator light block Operation Timer Ready Flash ALT ALT ALT Typical fault site Error in temperature sensor built into indoor IGBT (TH) Compressor breakdown Description of error Temperature sensor built into indoor IGBT (TH) has been open/short-circuited. Inverter current (Idc) detection circuit detects overcurrent. Compressor error (lockup) Compressor lockup is detected Current detection circuit error Activation of high-pressure SW Heat sink overheating error Abnormal current is detected while inverter compressor is turned off. High-pressure SW is activated. Temperature sensor built into IGBT (TH) detects overheating. P22 ALT Outdoor fan IPDU error Outdoor fan IPDU detects error. P26 P29 ALT ALT Activation of G-Tr (IGBT) short-circuit protection Compressor position detection circuit error Short-circuit protection for compressor motor driver circuit components is activated (momentary overcurrent). Compressor motor position detection error is detected. Note: The above check codes are examples only, and different check codes may be displayed depending on the outdoor unit configuration (e.g. a Super heat recovery multi system). For details, see the service manual for the outdoor unit. 172
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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
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5 Control Outline Indoor Unit Cont
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NO. Item Specification outline Rema
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NO. Item Specification outline Rema
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Outdoor Unit Item Description of op
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Item Description of operation, nume
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1 Cooling operation under low outsi
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Central control remote controller (
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6-1-2. When Wireless Remote Control
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Central control remote controller (
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X Y DC5V Power supply circuit Main
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6-2. Indoor Printed Circuit Board M
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MCC-1403 Power supply Power supply
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6-4. Test Operation of Indoor Unit
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Function CODE No. (DN Code) Table (
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Type DN code “10” Value Type Mo
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▼ Ventilating fan control from re
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6-7. Applied control for Outdoor Un
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(2) Indoor unit setup method for pr
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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
Page 121 and 122: (2) In the case that a central cont
Page 123 and 124: • Check the additional amount of
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: F12 - F12 ALT F15 - F15 ALT F16 - F
Page 175 and 176: Using TCC-LINK central control remo
Page 177 and 178: Light block Check code Cause of fau
Page 179 and 180: 8-4. Check Codes Displayed on Remot
Page 181 and 182: Main remote controller Check code O
Page 189 and 190: Main remote controller P04 P05 P07
Page 193 and 194: Errors Detected by TCC-LINK Central
Page 195 and 196: 8-5. Diagnosis procedure for each c
Page 197 and 198: Check code Check code name Cause Ch
Page 199 and 200: Check code Check code name Cause [E
Page 201 and 202: Check code Check code name Cause [E
Page 203 and 204: Check code Check code name Cause [F
Page 205 and 206: Check code Check code name Cause [H
Page 209 and 210: (*3) Check for solenoid valve of al
Page 215 and 216: Check code Check code name Cause [L
Page 217 and 218: Check code Check code name Cause [P
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(C) Heating operation Does heating
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Check code Check code name Cause [P
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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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