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9-3. Outdoor Unit Backup Operation Setting This product allows outdoor unit backup operation setting to be performed either at the header unit or a follower unit. If any of the fault modes specified below occurs to one of the outdoor units in a multi-outdoor unit system, proceed with outdoor unit backup operation. • A compressor failure (e.g. a layer short-circuit or a compressor failure in which no compressor is available to back up the faulty compressor) • A failure of a pressure sensor (Pd or Ps) or a temperature sensor (TD1, TD2, TD3, TS1, TE1, TE2, TK1, TK2, TK3, TK4, TK5, or TL) Note: Keep the number of backed-up outdoor units to one in the system (single refrigerant line). 9-3-1. Follower outdoor unit backup operation setting (failure of follower outdoor unit) (1) Turn off the power supply to all the indoor and outdoor units connected to the system. [Setup of failed follower outdoor unit] (2) Fully close the gas pipe service valve of the failed outdoor unit. (3) Leave the service valves of the liquid and balance pipe fully open (to prevent refrigerant stagnation in the unit). However, if there is a leakage from an outdoor PMV (unable to close), fully close the liquid pipe service valve. (4) From this point on, keep the power supply to the failed unit off. Disconnect the connector [CN03] for outdoor-outdoor communication (BUS2) provided on the interface P.C. board. Setup of failed follower outdoor unit CN03 BUS2 (2) Fully close gas pipe service valve. (4) In case of fault in refrigerating circuit or related part, disconnect BUS2 communication connector [CN03] on interface P.C. board. (3) Leave service valves of liquid and balance pipes fully open. (if there is leakage from outdoor PMV, fully close liquid pipe.) [Setup of header unit] (5) Turn on Bit 2 of SW09 on the interface P.C. board of the header unit. (Setting to prevent connected indoor units capacity over error. (E16)) Interface P.C. board of header unit SW06 SW07 SW09 SW10 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 SW11 SW12 SW13 SW14 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 SW16 SW17 1 2 3 4 1 2 3 4 (5) Turn on Bit 2 of SW09. 243
(6) Turn on the power supply to all the units connected to the system other than the failed follower unit. Determine what to do with the power supply to the failed follower unit in the following manner. Leave the power supply off. Turn on the power supply to protect the compressor (by turning on the case heater). (When the power supply to the unit is turned on, [E19] (error in the number of outdoor header units) will be displayed on the 7-segment display. However, this will not cause any problems.) (7) Perform settings needed to gain permission for backup operation from the header unit (error clearance). 1) Set SW01/02/03 on the interface P.C. board to 1/1/1 and confirm that [U1] [E26] (dropping out of an outdoor unit) is displayed on the 7-segment display. 2) Set SW01/02/03 on the interface P.C. board to 2/16/1. Upon confirming that [Er] [… … …] is displayed on the 7-segment display, press SW04 and hold for 5 seconds or more. 3) [Er] [… CL] (error clearance completed) will be displayed on the 7-segment display. 4) Set SW01/02/03 back to 1/1/1. (The display should change to [U1] [– – –].) Interface P.C. board of header unit (7) Set SW01/02/03 to 1/1/1 [U1] [E26] will be displayed. Set SW01/02/03 to [2/16/1]. [Er] [… … …] will be displayed. Press SW04 and hold for 5 seconds or more [Er] [… CL] will be displayed. Set SW01/02/03 back to 1/1/1. [U1] [– – –] will be displayed. Push switch 7-segment display Rotary switches This is the end of follower outdoor unit backup operation setting. Check the operation. 244
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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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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
Page 223 and 224: (C) Heating operation Does heating
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: 9-2. Compressor Backup Operation Se
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)
Page 253 and 254: [Setup of outdoor units other than
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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
Page 277 and 278: 13P.C. BOARD EXCHANGE PROCEDURES I
Page 279 and 280: Procedure 1: Reading Setting Data f
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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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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