Mitsubishi SRK100VNXWPZSX, Service Manual

Page: 78 / 202

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77
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'20 • PAC-SM-351 '20 • PAC-SM-351
t
°
t °
t °
t °
t
°
t °
t °
Models FDC100VNX, 125VNX, 140VNX
●
Outdoor unit check points
Check items with the *mark when the power is ON.
*
LED1
(Y
ello
w)
LED2 (Red)
LED1
(Green)
Must be conductive. When fuse is blown, replace it or check wiring.
L1
TB
PCB3
DM
52X1
L1
C1
DIP-IPM
RAM
RAM
63H1
CM
A/F MODULE
INVERTER PCB
NOISE FILTER
PCB1
PCB2
CONTROL PCB
L1i
Red Yellow/Green Red White White White Blue
F 250V 30A
F 250V 4A
F 250V 8A
L1o
E1
CT1
TB1 TB2
TB10 TB11
～ ～
－ ＋
－
N2
P
L2
P N2
TB7
U
V
W
CNE
CNI4
CNI2
CNACT1
TB8 TB9
L1
＋
E
Ni
1 2
No
N 1 2 3
CNA2
CNPS
PSL
CNTH
CNB
CNIP
CNW
CNW2
CNE CNH
CNR
CNS
CNEEV1
CNEEV2
CNFAN1
CNA1
CNI3 CNI1
18V 15V
FMO1
M
M
M
SM2
SM1
20S
CNF
OPTION
DH
CH1
THo-R2
THo-P
THo-A
THo-S
THo-D
THo-R1
Power source check: Measure the power source L1,N (It is normal if it is
AC220-240V)
Noise filter check: There should be continuity
.
There should be no shorts between phases.
DC Reactor continuity Check: Max 25m
Ω
Capacitor check: Check for anomaly in appearance such as damage, swelling, etc.
Check the power transistor module if there is short, open, or breakdown on the elements
LED1 (Y
ellow) Check :
Red White Blue
When the outdoor unit fan motor is abnormal: (Refer to page 120•163)
LED2(Red) check: 1-5 time flash : Refer to page
53•54
F1 (250V, 2A) F2 (250V, 4A)
CNFAN2
FMO2
M
1
-
7 time flash
(Refer to page 53•54)
Models FDC100VNX-W, 125VNX-W, 140VNX-W
(8) Outdoor unit control failure diagnosis circuit diagram