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3. Troubleshooting without error code
3-1. Indoor unit—No power
Forecast of cause
Power supply failure
External cause
Electrical components defective
Check point 1. Check installation condition
•
Isn’t the breaker down?
•
Check loose or removed connection cable.
-> If abnormal condition is found, correct it by referring to the installation manual or the “DESIGN &
TECHNICAL MANUAL”.
↓
Check point 2. Check external cause at indoor and outdoor (voltage drop or noise)
•
Instant drop: Check if there is a large load electric apparatus in the same circuit.
•
Momentary power failure: Check if there is a defective contact or leak current in the power sup-
ply circuit.
•
Noise: Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or
electric equipment that may cause harmonic wave)
Check the complete insulation of grounding.
↓
Check point 3. Check electrical components
Check the voltage of power supply.
Check if AC 198 to 264 V appears at outdoor unit terminal L—N.
-> If no, go to
+
-
↓
•
Check fuse in filter PCB.
If fuse is open, check if the wiring between terminal and filter PCB is loose, and replace fuse.
•
Check varistor in filter PCB.
If varistor is defective, there is a possibility of an abnormal power supply.
Check the correct power supply and replace varistor.
Upon checking the normal power supply, replace varistor.
↓
End
3-1. Indoor unit—No power
- (03-63) -
3. Troubleshooting without error code
TROUBLESHOOTING
TROUBLESHOOTING
Содержание ABHG18KRTA
Страница 4: ......
Страница 5: ...1 GENERAL INFORMATION 2022 08 08 SR_CH01_MU004EG_06 ...
Страница 59: ...2 TECHNICAL DATA AND PARTS LIST 2022 08 08 SR_CH02_MU004EG_11 ...
Страница 62: ......
Страница 212: ...9 17 Model AOHG36KBTA5 02 150 9 PC board diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...
Страница 213: ...3 TROUBLESHOOTING 2022 08 08 SR_CH03_MU004EG_07 ...
Страница 216: ......
Страница 316: ...6 2 Outdoor unit 03 100 6 Thermistor resistance values TROUBLESHOOTING TROUBLESHOOTING ...
Страница 317: ...4 CONTROL AND FUNCTIONS 2022 04 13 SR_CH04_MU004EG_08 ...
Страница 320: ......
Страница 403: ...5 FILED WORKING 2022 08 08 SR_CH05_MU004EG_08 ...