AirStage AO54FJ, Service Manual

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1) Connection cable wiring
Check Point 2 : Check Outdoor unit Filter PCB Check Point 2 : Check Outdoor unit Filter PCB
1)Check wiring of Power cord / Connection cable (incorrect wiring, loose wiring, etc.)
2)Check Power Supply AC220 + - 20V between Outdoor unit terminal 1-2.
If it is NG, Check the power cord at the circuit breaker side
3)Check Varistor (VA202,VA203)
If it is NG, Check if power supply other than the specified one is connected.
If Varistor is defective, replace it.
4)Check FUSE (F201)
If it is open, check the shortage between L – N and replace the FUSE
5)Check the voltage (AC 220V) between Power Supply W203 – V204.
If it the voltage is abnormal, replace Filter PCB Check CT ( ( PARTS INFORMATION 1) PARTS INFORMATION 1)
6)Check FUSE (F203)
If FUSE is open, check the cause of open and replace the FUSE.
7)Check VA201
If it Varistor is defective, check the primary side voltage and replace the varistor.
2. OUTDOOR UNIT NO POWER
1) Check Power Relay (PARTS INFORMATION 2) (PARTS INFORMATION 2)
2) Check Diode Bridge (PARTS INFORMATION 3 (PARTS INFORMATION 3)
3) Check Active filter module ( PARTS INFORMATION 4 PARTS INFORMATION 4)
Check Point 3 : Check Point 3 :
Check the parts around Filter PCB Check the parts around Filter PCB
1)Check DC 300V + - 20V at CN10 of Control PCB.
If -20V does not appear, Check Capacitor
2)Check Fuse (F1) of Control PCB
If the FUSE is open, locate the cause of open and replace the fuse.
If another abnormal is found, replace Control PCB.
Check Point 4 : Check Point 4 :
Check Check Outdoor unit Controller PCB Outdoor unit Controller PCB
VA202,VA203 : P/No. 0000361224
F201: P/No.0600222512
F203 : P/No. 0600385163
VA201 : P/No. 0000361101
Forecast of Cause Forecast of Cause:
1. Relation of installation construction 3. Check the parts around Filter PCB
1) Use of specified material 1) Check Power Relay
2) Check the power supply 2) Check Diode Bridge
3) Check Active Filter Module
2. Relation of Outdoor unit filter PCB
4.Relation of Outdoor unit Controller PCB
2) Check Power supply 1) Check DC Input
3) Check Varistor of Outdoor unit 2) Check FUSE(F1)
4) Check Fuse of Outdoor unit
5) Check CT of Filter PCB
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.)
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.
2
2
2
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