Toshiba MMY-MUP0801HT8P-TR Service Manual page 3

7- 5. Troubleshooting in Test Operation ................................................................................. 140
7- 5-1. A Check Code is Displayed on the Remote Controller ...................................... 140
7- 5-2. No Remote Controller Response with Check Code............................................ 141
7- 5-3. No Remote Controller Response without Check Code ...................................... 141
7- 5-4. Connected Indoor/Outdoor Unit Quantity Check ............................................... 142
7- 6. Test Operation Check ...................................................................................................... 144
7- 6-1. Fan Check ............................................................................................................... 144
7- 6-2. Cooling/Heating Test Operation Check ................................................................ 145
7- 7. Service Support Function ............................................................................................... 150
7- 7-1. Check Function for Connecting of Refrigerant and Control Lines ................... 150
7- 7-2. Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit ..................... 151
7- 7-3. Check Code Clearing Function ............................................................................. 158
7- 7-4. Remote Controller Distinction Function .............................................................. 161
7- 7-5. Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit ............ 162
7-7-6. Pulse Motor Valve (PMV) Forced Open/Close Function and Solenoid valve
Forced ON Function in Outdoor Unit .................................................................. 163
7- 7-7. Fan Operation Check in Outdoor Unit ................................................................. 165
7-7-8. Abnormal Outdoor Unit Discrimination Method By Fan Operating Function .. 166
7- 7-9. Manual Adjustment Function of Outside Temperature (TO) Sensor ................. 167
7- 7-10. Refrigerant leakage detection ............................................................................ 168
7- 7-11. Monitor Function of Remote Controller Switch ............................................... 169
7- 8. Wave Tool Advance for SMMS-u Series ......................................................................... 171
7- 8-1. Before the Use of Wave Tool Advance ................................................................. 171
7- 8-2. About Wave Tool Advance ..................................................................................... 171
7- 8-3. Valid/Prohibition/Permission setting for Test operation from WTA App. .......... 171
7- 8-4. Confirmation for NFC tag Communication .......................................................... 172
8. TROUBLESHOOTING .......................................................................................... 173
8- 1. Overview ........................................................................................................................... 173
8- 2. Troubleshooting method ................................................................................................. 174
8- 3. Troubleshooting based on information displayed on remote controller ................... 180
8-4. Check Codes Displayed on Remote Controller and SMMS-u Outdoor Unit
(7-Segment Display on I/F Board) and Locations to Be Checked .............................. 184
8- 5. Diagnosis procedure for each check code ................................................................... 199
8- 6. 7-Segment Display Function .......................................................................................... 230
8- 7. Oil Level Judgment Display ............................................................................................ 237
8- 8. SMMS-u Outdoor Interface P.C. Board Function Setting Change Table ..................... 238
8- 9. Leakage/Clogging of Refrigerating Cycle Circuit ......................................................... 240
8- 10. Sensor Characteristics ................................................................................................... 246
8- 11. Pressure Sensor Output Check ..................................................................................... 249
9. BACKUP OPERATION (EMERGENCY OPERATION) ........................................ 251
9- 1. Note for Backup Operation ............................................................................................. 251
9- 2. Compressor Backup Operation Setting ........................................................................ 252
9- 3. Outdoor Unit Backup Operation Setting ....................................................................... 254
9-3-1. Follower outdoor unit backup operation setting (failure of follower outdoor
unit) ......................................................................................................................... 254
9-3-2. Header outdoor unit backup operation setting (failure of header outdoor
unit) .......................................................................................................................... 256
9- 4. Cooling-Season Outdoor Unit Backup Operation Setting ........................................... 258
9- 5. Outdoor Unit Automatic Backup Operation Outline ..................................................... 259
10. OUTDOOR UNIT REFRIGERANT RECOVERY METHOD ............................... 260
10- 1. Refrigerant Recovery from Troubled Outdoor Unit (Reclaim) .................................... 260
10- 1-1. Note for refrigerant recovery operation ............................................................ 260
10- 1-2. Refrigerant recovery procedure A (Case that the troubled outdoor
unit turn on) ........................................................................................................... 260
10-1-3. Refrigerant recovery procedure B (Case that the troubled outdoor unit
does not turn on) ................................................................................................. 262
10- 2. How to Operate System While Troubled Outdoor Unit Being Repaired ..................... 263
10- 3. Work procedure after Repair ......................................................................................... 264
- 3 -