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▼ Wireless remote controller (4-way Air Discharge Cassette type) Procedure Operation content Turn off the air conditioner’s power. Remove the adjustment corner cap attached to the sensor section from the ceiling panel. For removing method, follow the installation manual attached to the 1 ceiling panel. (Be careful when handling the sensor section because it has cables connected to it.) Remove the sensor cover from the adjustment corner cap (held with 1 screw). 2 3 4 5 Change Bit 1, “TEST,” of switch S003 on the sensor PC board from “off” to “on.” Replace the sensor cover and attach the adjustment corner cap with the sensors to the ceiling panel. Turn on the air conditioner’s power. Push the button of the wireless remote controller, and select the “ COOL” or “ HEAT” operating mode with the Mode button. (All display lamps on the wireless remote controller sensor section blink during the test operation.) • Do not use any operating mode other than “ COOL” or “ HEAT”. • Error is detected as usual. When the test operation has finished, push the button to stop the operation. Turn off the air conditioner’s power. Change Bit 1 of switch S003 on the sensor PC board from “on” to “off.” Attach the adjustment corner cap with the sensors to the ceiling panel. Sensor cover Adjustment corner cap Bit 1 4 OFF➝ON 3 2 S003 1 ON Sensor PC board ▼ Wireless remote controller (Under Ceiling type) Procedure 1 2 3 4 5 6 Operation content Turn on the air conditioner’s power. This operation is not accepted for 5 minutes when power has been turned on for the first time after installation, and for 1 minute when power has been turned on the second and subsequent times after that. After the specified time has passed, perform the test operation. Push the button and change the operating mode to “ COOL” or “ HEAT” with the Mode button. Then change the fan speed to “ High” using the “Fan” button. Test cooling operation Set the temperature to 18°C using the Temperature setting button. After checking for the receiving “beep” tone, immediately push the Temperature setting button to set it to 19°C. After checking for the receiving “beep” tone, immediately push the Temperature setting button to set it to 18°C. Test heating operation Set the temperature to 30°C using the Temperature setting button. After checking for the receiving “beep” tone, immediately push the Temperature setting button to set it to 29°C. After checking for the receiving “beep” tone, immediately push the Temperature setting button to set it to 30°C. Then repeat steps 4 ➝ 5➝ 4 ➝ 5. After approximately 10 seconds, the “OPERATION” (green) and “READY” (yellow) display lamps on the sensor part of the wireless remote controller blink, and the air conditioner starts operating. If the lamps do not blink, repeat step 2 and the subsequent steps. After the test operation, push the Start/Stop button to 7 stop the operation. Outline of test operation from the wireless remote controller Test cooling operation: Start ➝ 18°C ➝ 19°C ➝ 18°C ➝ 19°C ➝ 18°C ➝ 19°C ➝ 18°C ➝ (Test operation) ➝ Stop Test heating operation: Start ➝ 30°C ➝ 29°C ➝ 30°C ➝ 29°C ➝ 30°C ➝ 29°C ➝ 30°C ➝ (Test operation) ➝ Stop Always select [ HIGH] fan speed. 2 2 3, 4, 5, 6 2,7 Test operation from the outdoor unit • Refer to “7-7-2. Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit” in “7-7. Service Support Function.” Note: The test operation returns to normal operating mode after 60 minutes. 145
(2) Test operation START Test operation for every indoor unit in turn Test operation for one indoor unit Operation starts Is cold air or hot air discharged? YES NO Refer to "Test operation procedure" of the indoor remote controller. The operation does not start for approximately 3 minutes after powering-on or stopping operation. Note: After powering-on, it may require up to 10 minutes to start the operation due to the initial communications of the system. Check the operating status of the compressor. Is air circulation sufficient? NO Check the direction of the louver. YES Operate all the indoor units at once. Execute a test operation using "Start/Stop Function of the Indoor Unit from Outdoor Unit" in the "Service Support Function" section. Note 1 Is there adequate temperature difference between suction and discharge? NO YES Is the operating voltage correct? (220-240 V ±10%) YES NO • Check power voltage of the main power supply. • Check the cable size of the power supply. Note 2 Note 3 Is the operating current normal? Normal YES Is the operating pressure normal? YES NO NO Notes 1-3 are on the next page. • Check the temperature load of the indoor/outdoor units. • Check the pipe length and refrigerant amount. • Check the operating Hz of the compressor. • Check the operation of the outdoor fans. • Check for abnormal sound in the outdoor unit. (Abnormal sound, etc. of the compressor and other components) 146
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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
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 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: 7-6-2. Cooling/Heating Test Operati
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
Page 173 and 174: (Errors detected by IPDU featuring
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
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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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