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M Right-side Fan motor Fan Heat exchanger (TO) Left-side (TE1) Heat exchanger SV A PMV1 PMV2 (SV5) Reducer 4-way valve B (TS1) Check valve H (TL) High-pressure sensor SV Low-pressure sensor C Fusible plug FP (SV3D) SV Oil separator (SV2) SV Check valve Check valve (SV41) SV (SV42 ) G Liquid tank (TD1) High-pressure SW (SV3C Compressor A3 1 (inverter) SV High-pressure SW (TK4) Compressor 2 (inverter) (TD2) Accumulator D K Check valve Check valve (TK1) (TK2) (SV3E) SV (TK5) Oil header I F (SV3A) SV J Check valve SV (SV3B) Check valve Liquid-side packed valve Gas-side service valve Balance pipe packed valve E 233
List of Check Codes Generated upon Occurrence of Leakage/Clogging in Outdoor Cycle or Oil Circuit Part (MMY-MAP1404, 1604) Clogging Leakage Part Outdoor PMV1, 2, 4 Check valve in discharge pipe convergent section Note: “XX” represents sub-code Site of fault (see next page) A B Unit generating check code Corresponding unit Corresponding unit Detected fault and check code Activation of high-pressure protection Activation of low-pressure protection Discharge temp. error (TD1) Discharge temp. error (TD2) Discharge temp. error (TD3) High-pressure protection error High-pressure SW system error P20 H06 P03 P17 P18 P20 P04-XX Symptom Rise of pressure Fall of pressure Rise of discharge temp. (compressor 1) Rise of discharge temp. (compressor 2) Rise of discharge temp. (compressor 3) Abnormal rise of pressure Check valve in discharge pipe C Corresponding unit High-pressure SW system error P04-XX Abnormal rise of pressure Check valve in oil-equalization circuit Capillary Strainer D Corresponding unit Oil level detection circuit error Oil level low detection and protection H16-XX H07 SV3A valve E Other connected unit Oil level low detection and protection H07 Oil level low SV3B valve F Corresponding unit Oil level low detection and protection H07 Oil level low SV3C valve G Other connected unit Oil level low detection and protection H07 Oil level low SV3D valve SV3D valve circuit capillary Strainer H Corresponding unit Oil level low detection and protection H07 Oil level low SV3E valve I Corresponding unit Oil level detection circuit error Oil level low detection and protection H16-05 H07 Oil circuit error or oil level low Oil circuit error Oil level low Oil level low SV3F valve J Corresponding unit Oil level low detection and protection H07 Oil level low Oil return distributor K Corresponding unit Oil level low detection and protection H07 Oil level low SV3C bypass capillary L Corresponding unit Oil level detection circuit error H16-04 Oil circuit error Outdoor PMV1, 2 Part Check valve in discharge pipe convergent section Check valve in discharge pipe Site of fault (see next page) A B C Unit generating check code Corresponding unit Other connected unit Corresponding unit Corresponding unit Detected fault and check code Outdoor liquid backflow error Oil level low detection and protection Discharge temp. error (TD1) Discharge temp. error (TD2) Discharge temp. error (TD3) Oil level low detection and protection Compressor breakdown Compressor error (lockup) Oil level low detection and protection Compressor breakdown Compressor error (lockup) P13 H07 P03 P17 P18 H07 H01-XX H02-XX H07 H01-XX H02-XX Symptom Refrigerant entrapment Rise of discharge temp. (compressor 1) Rise of discharge temp. (compressor 2) Rise of discharge temp. (compressor 3) Refrigerant entrapment Refrigerant entrapment Check valve in oil-equalization circuit Corresponding unit Oil level low detection and protection H07 Excessive amount of oil D (Leaking side) Insufficient amount of oil (Normal side) SV3A valve E Corresponding unit Oil level low detection and protection H07 Oil level low SV3C valve G Corresponding unit Oil level low detection and protection H07 Oil level low 234
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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
Page 183 and 184: 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
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: 8-8. Leakage/Clogging of Refrigerat
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)
Page 253 and 254: [Setup of outdoor units other than
Page 255 and 256: 10-3.Work procedure after Repair Wh
Page 257 and 258: 11-2.Replacement of Compressors
Page 259 and 260: [When replacing normal as well as f
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
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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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