Daikin FCAHG71HVEB Installer And User Reference Manual page 3
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FCAHG71~140HVEB
Split system air conditioners
4P561449-1B - 2021.07
8.1
Overview: Commissioning .............................................................................................................................................. 46
8.2
Precautions when commissioning .................................................................................................................................. 46
8.3
Checklist before commissioning..................................................................................................................................... 47
8.4
To perform a test run...................................................................................................................................................... 47
8.5
Error codes when performing a test run........................................................................................................................ 49
11.1
Piping diagram: Indoor unit ............................................................................................................................................ 52
11.2
Wiring diagram................................................................................................................................................................ 52
11.2.1
Unified wiring diagram legend ....................................................................................................................... 52
12.1
System layout.................................................................................................................................................................. 57
12.2
Information requirements for fan coil units................................................................................................................... 58
15.1
Operation range.............................................................................................................................................................. 61
15.2
Operating the system ..................................................................................................................................................... 61
15.2.1
About operating the system........................................................................................................................... 61
15.2.2
About cooling, heating, fan only, and automatic operation ......................................................................... 61
15.2.3
About the heating operation.......................................................................................................................... 62
15.2.4
To operate the system ................................................................................................................................... 62
15.3
Using the dry program.................................................................................................................................................... 63
15.3.1
About the dry program................................................................................................................................... 63
15.3.2
To use the dry program.................................................................................................................................. 63
15.4
Adjusting the air flow direction ...................................................................................................................................... 63
15.4.1
About the air flow flap.................................................................................................................................... 63
15.5
Active circulation airflow ................................................................................................................................................ 64
15.5.1
To start the active circulation airflow ............................................................................................................ 64
17.1
Precautions for maintenance and service...................................................................................................................... 67
17.2
Cleaning the air filter, suction grille, air outlet and outside panels............................................................................... 67
17.2.1
To clean the air filter ...................................................................................................................................... 68
17.2.2
To clean the suction grille .............................................................................................................................. 69
17.2.3
To clean the air outlet and outside panels .................................................................................................... 70
17.3
Maintenance after a long stop period............................................................................................................................ 70
17.4
Maintenance before a long stop period......................................................................................................................... 71
17.5
About the refrigerant...................................................................................................................................................... 71
17.6
After-sales service and warranty .................................................................................................................................... 72
17.6.1
Warranty period ............................................................................................................................................. 72
17.6.2
Recommended maintenance and inspection ................................................................................................ 72
17.6.3
Recommended maintenance and inspection cycles ..................................................................................... 72
17.6.4
Shortened maintenance and replacement cycles ......................................................................................... 73
18.1
Symptoms that are NOT system malfunctions............................................................................................................... 76
18.1.1
Symptom: The system does not operate....................................................................................................... 76
18.1.2
Symptom: The fan speed does not correspond to the setting...................................................................... 76
18.1.3
Symptom: The fan direction does not correspond to the setting................................................................. 76
18.1.4
Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 76
18.1.5
Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 76
18.1.6
Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 77
18.1.7
Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 77
18.1.8
Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................. 77
18.1.9
Symptom: Noise of air conditioners (Outdoor unit)...................................................................................... 77
18.1.10 Symptom: Dust comes out of the unit........................................................................................................... 77
18.1.11 Symptom: The units can give off odours ....................................................................................................... 77
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Installer and user reference guide
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