AirStage AO54FJ, Service Manual

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1. INDOOR UNIT NO POWER
Check Point 2 : Check Check Point 2 : Check Indoor unit Filter PCB Indoor unit Filter PCB
Forecast of Cause Forecast of Cause:
1.Relation of installation construction 2. Relation of Indoor unit Filter PCB
1)Use of specified material 1)Wiring of connection cable
2)Check the power supply 2)Check power supply
3)Check Fuse of Indoor unit filter PCB
4)Check varistor of Indoor unit filter PCB
5)Check Power PCB
6)Check Thermal Fuse of Indoor unit
3. Relation of Indoor unit Filter PCB
Checking method when all Indoor unit do not turn ON. Checking method when all Indoor unit do not turn ON.
Checking method when certain Indoor unit does not turn ON. Checking method when certain Indoor unit does not turn ON.
1)Check the wiring (incorrect wiring, loose wiring , etc.)of connection cable.
2)Check Power Supply voltage AC220 + - 20V between Indoor unit terminal 1- 2.
If it is NG, trance the connection cable at Outdoor unit side.
3)Check FUSE(F101) of Filter PCB
If it is NG, Check shortage of L – N or cable wiring, then replace FUSE.
4)Check Varistor of Filter PCB (VA102,VA101)
If it is NG, check if the specified power voltage is supplied and replace Varistor.
5)Remove CN1 from Control PCB, and check AC 220V +- 20V.
If it is NG, replace Power PCB.
6)Check the continuity of Terminal FUSE(Only for Wall mounted and Cassette Type)
If it is NG, check the the material and dielectric voltage, and replace Thermal FUSE.
1)Check above items 1) through 7)
2)Check the insulation between terminal 1 –2 of Outdoor unit.
If it is NG, remove the connection cable from the terminal Indoor unit and trace the abnormal condition.
Check Point 1 Check Point 1 - - 2 : Check Power supply 2 : Check Power supply
Check external cause (Power supply)
Instant Drop Check if there is an electric equipment with a large load in the same circuit.
Instant Power Outage Check if there is a defective contact or leakage in the power supply.
Noise Check if there is any equipment that cause the harmonic wave near the power line.
(Neon tube or Electric equipment that harmonic wave Check that the grounding is completely insulated.)
6- 4-2 TROUBLE SHOOTING WITH NO ERROR CODE
30A Circuit breaker
H07RN-F or
Equivalent Min.5.0mm
Total length is
less than 50m
Connection cord
H07RN-F or
Equivalent
Max. 8.0mm
Min.5.0mm
Power supply
cord
Wire type Size Use
Check Point 1 Check Point 1 - - 1 : Check the installation work 1 : Check the installation work
Follow the installation Manual if any installation failure is found.
Check Cable / Breaker Check if any loose connection or removal of cable.
3)Check the power supply of Outdoor unit.
Refer to Trouble shooting 2 Trouble shooting 2 OUTDOOR OUTDOOR UNIT UNIT NO POWER. NO POWER.
Check Point 3 : Check Outdoor unit Check Point 3 : Check Outdoor unit
2
2
2
06-37