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Method 2 If it is not possible to turn on the indoor unit or read the setting data from the P.C. board to be replaced via a wired remote controller or operate the remote controller due to the failure of its power supply circuit - Replacing EEPROM (IC503, IC10) (For the location of this component and the method to replace it, see the “ EEPROM Location Diagram” section.) • The EEPROM on the P.C. board to be replaced needs to be removed and mounted on the service P.C. board. Replacing P.C. board and turning on power: Procedure 2 Reading EEPROM data: Procedure 1 • If data cannot be read, go to Method 3. Replacing EEPROM (IC503, IC10) again (For the location of this component and the method to replace it, see the “ EEPROM Location Diagram” section.) • The old EEPROM, supplied with the P.C. board to be replaced and now mounted on the service P.C. board, needs to be replaced with the new EEPROM, supplied with the service P.C. board. Replacing P.C. board and turning on power: Procedure 2 Writing EEPROM data in new EEPROM: Procedure 3 Resetting power supply (applicable to all indoor units connected to remote controller in case of group operation) Method 3 If it is not possible to read the setting data due to the failure of the EEPROM itself - Replacing P.C. board and turning on power: Procedure 2 Writing EEPROM data on basis of information supplied by customer (e.g. high ceiling adjustment setting and optional connection setting): Procedure 3 Resetting power supply (applicable to all indoor units connected to remote controller in case of group operation) 277
Procedure 1: Reading Setting Data from EEPROM (Read the setting data from EEPROM, including both the factory settings and any modifications made to them on site.) 1 Push the + + buttons simultaneously and hold for at least 4 seconds. 1 (This number corresponds to the same number shown on the Remote Controller Operation Diagram.) * In the case of group control, the unit No. displayed first is the indoor unit No. of the header unit. At the same time, the CODE No. (DN code) 10 is displayed, and the fan of the selected indoor unit comes on, with the louver swinging, depending on the model. UNIT LOUVER 2 Each time the button is pushed, one of the indoor unit No. under group control is displayed in turn. 2 * The fan of the selected indoor unit comes on, with the flaps swinging, depending on the model. 3 The button allows you to move the CODE No. (DN code) up/down by one place. 3 4 First, change the CODE No. (DN code) from 10 to 01. (To set filter sign lighting time) Jot down the setting data displayed. 5 Change the CODE No. (DN code) using the button. Again, jot down the setting data displayed. 6 Repeat step 5 until all the setting data has been jotted down. (See the CODE No. list.) * CODE No. (DN code) go from 01 to FF with a few gaps along the way. 7 When finished, push the button to bring the system back to normal off state. 6 (It takes the system about 1 minute to become responsive to remote controller operation.) CODE No. (DN code) necessary at minimum DN Contents 10 Type 11 Indoor unit capacity 12 Line address 13 Indoor address 14 Group address The type and capacity of the indoor unit are necessary for fan speed setting. Remote Controller Operation Diagram CODE No. SET DATA SETTING UNIT No. UNIT No. CODE No. R.C. No. R.C. No. SET DATA 3 TEMP. TIMER SET FAN ON / OFF MODE 4 3 TEMP. ON / OFF FILTER UP/DN SCHEDULE FAN MODE 4 5 6 1 FILTER RESET TEST TIME SET CL SAVE SWING/FIX VENT UNIT LOUVER 2 6 1 5 PROGRAM DAY TIME SAVE VENT FLT.RESET TEST SET CL SWING/FIX UNIT LOUVER 2 278
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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
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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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Page 227 and 228: (1)Display of System Information (D
Page 229 and 230: (3)Display of Outdoor Cycle Data (D
Page 231 and 232: (5)Display of Indoor Unit Informati
Page 233 and 234: 8-8. Leakage/Clogging of Refrigerat
Page 235 and 236: List of Check Codes Generated upon
Page 237 and 238: 8-9. Sensor Characteristics Outdoor
Page 239 and 240: Indoor TC1 sensor 200 150 Resistanc
Page 241 and 242: 240 Outdoor Unit ▼ Ps sensor char
Page 243 and 244: 9-2. Compressor Backup Operation Se
Page 245 and 246: (6) Turn on the power supply to all
Page 247 and 248: (8) Set Bits 1 and 2 of SW30 on the
Page 249 and 250: 10OUTDOOR UNIT REFRIGERANT RECOVERY
Page 251 and 252: [Setup of failed outdoor unit] (13)
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Page 257 and 258: 11-2.Replacement of Compressors
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Page 261 and 262: 11-3.Check Procedure to Search Caus
Page 263 and 264: Check items and procedures to follo
Page 265 and 266: No. Part to be replaced Work proced
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Page 281 and 282: Procedure 3: Writing Setting Data i
Page 283 and 284: CODE No. list (Example) CODE No. (D
Page 285 and 286: 13-2-3.Interface board (MCC-1606) r
Page 287 and 288: (6) Set the dip switch (SW800) sett
Page 289 and 290: 13-2-6.Noise Filter P.C. Board (MCC
Page 291 and 292: (7) Install the service P.C. boards
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Page 295 and 296: SMMS-i OUTDOOR UNIT MMY-MAP1404HT8(
Page 297 and 298: REFRIGERATION CIRCUIT DIAGRAM M MOT
Page 299 and 300: Ref. No. Part No. Description MAP08
Page 301 and 302: SMMS-i INV SERVICE PARTS LIST MMY-M
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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-MAP1404HT8(
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REFRIGERATION CIRCUIT DIAGRAM M MOT
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SMMS-i OUTDOOR UNIT MMY-MAP0804HT7(
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SMMS-i OUTDOOR UNIT MMY-MAP1404T8-S
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WARNINGS ON REFRIGERANT LEAKAGE Che
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