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(6) (7) (2) (5) (8) (1) High-pressure sensor (SV3D) SV Oil separator (SV41) SV Highpressure (SV3C) (TD1) SW (TK4) TK5) SV3E) Distributor SV SV (SV2) SV (SV42) SV Highpressure SW Highpressure (TD2) SW (SV43) (TD3) (TK2) (TK3) Oil header SV (SV3F) (3) SV (SV3B) (8) (4) SV SV SV Check code Check code name Cause [H08] / [d4] (AI-NET) Oil level detective temperature sensor error TK1 to TK5 sensor Open/Short Sub-code: 01: TK1 sensor error 02: TK2 sensor error 03: TK3 sensor error 04: TK4 sensor error 05: TK5 sensor error The detected error is an oil level detective temperature sensor error. Check disconnection of the wiring and resistance value of the sensor. If the sensors are normal, replace the outdoor I/F P.C. board. Circuit TK1 TK2 TK3 TK4 TK5 Connector CN531 (Black) CN532 (Green) CN533 (Pink) CN534 (Yellow) CN535 (Red) Check code Check code name Cause [H16] / [d7] (AI-NET) Oil level detection circuit error TK1 temperature detective circuit error (Sub-code: 01) 1. Coming-off of TK1 sensor, miswiring, characteristics error of resistance value 2. Oil-equalization circuit error (Check valve, capillary clogging, strainer clogging) 3. Refrigerant stagnation in the compressor shell Is not TK1 sensor detached? Yes Correct installation of sensor. No Is there no miswiring or misinstallation on TK1/TK2/TK3/TK4/TK5 sensors? No Yes Correct miswiring/misinstallation. TK1: CN531, black TK2: CN532, green TK3: CN533, pink TK4: CN534, yellow TK5: CN535, red Are characteristics of TK1 sensor resistance value normal? Yes No *See “Outdoor unit temperature sensor characteristics” on “8-9. Sensor Characteristics”. Sensor error Start a test operation in COOL or HEAT mode. ↓ Display TK1 sensor temperature on 7-segment display with SW01/02/03=[1] [12] [2]. ↓ Check TK1 sensor temp approx. 10 minutes after compressor 1 has operated. If low temperature continues (approximately outside temp) or temperature has little change, a clogging of strainer of oil-equalization circuit, clogging of capillary tube, or malfunction of check valve is considered. No error Error Compressor Strainer Capillary TK1 Replace clogging part. Check the clogging of SV3E valve. (Note 1) Error (Note 1) Refer to the article of the check code [H07]. Replace SV3E valve. No error Check I/F P.C. board MMY-MAP1404∗ MMY-MAP1604∗ Compressor (Inverter) Compressor Compressor (Inverter) (Inverter) 1 1 2 3 209
Check code Check code name Cause [H16] / [d7] (AI-NET) Oil level detection circuit error TK2 temperature detective circuit error (Sub-code: 02) 1. Coming-off of TK2 sensor, miswiring, characteristics error of resistance value 2. Oil-equalization circuit error (Check valve, capillary clogging, strainer clogging) 3. Refrigerant stagnation in the compressor shell Is not TK2 sensor detached? Yes Correct installation of sensor. No Is there no miswiring or misinstallation on TK1/TK2/TK3/TK4/TK5 sensors? No Yes Correct miswiring/misinstallation. TK1: CN531, black TK2: CN532, green TK3: CN533, pink TK4: CN534, yellow TK5: CN535, red After resetting the power Are characteristics of TK2 sensor resistance value normal? Yes Start a test operation in COOL or HEAT mode. Display TK2 sensor temperature on 7-segment display with SW01/02/03=[1] [13] [2]. No *See “Outdoor unit temperature sensor characteristics” on “8-9. Sensor Characteristics”. Check TK2 sensor temp approx. 10 minutes after compressor 1 has operated. If low temperature continues (approximately outside temp) or temperature has little change, a clogging of strainer of oil-equalization circuit, clogging of capillary tube, or malfunction of check valve is considered. ↓ ↓ Error Strainer Capillary Compressor Sensor error Replace clogging part. No error TK2 Check the clogging of SV3E valve. (Note 1) Error (Note 1) Refer to the article of the check code [H07]. Replace SV3E valve. No error Check I/F P.C. board Check code Check code name Cause [H15] / [A1] (AI-NET) Outdoor discharge temperature sensor (TD2) misconnection 1. Coming-off of TD2 sensor 2. Misinstallation of TD1, TD2, or TD3 sensor, miswiring, characteristics error of resistance value Is TD2 sensor installed correctly? No Correct installation of sensor. Yes Is there no miswiring or misinstallation on TD1/TD2/ TD3 sensors? Yes Correct miswiring/misinstallation. TD1: CN502, white TD2: CN503, pink TD3: CN504, blue No Are resistance characteristics of TD2 sensor normal? No Sensor error ➝ Replace the sensor. Yes Check I/F P.C. board. 2 210
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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
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
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: (*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 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
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Page 257 and 258: 11-2.Replacement of Compressors
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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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