Mitsubishi Electric PAC-AK31BC, Техническое и сервисное руководство

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21
7 WIRING DIAGRAM
7-1. OUTDOOR UNIT
MXZ-8A140VA
1
C. B.
MF1
4567
CNF1 (WHT)
CN2
(WHT
)
CN4
(WHT
)
CN3S
(WHT )
CNDM
(WHT )
CN51
(WHT )
CNAC (WHT)
TH7/6 (RED)
TH3 (WHT)
12
12
TH4 (WHT)
12
34
63HS (WHT)
12
3
63H (YL
W)
31
63L
(RED)
31
CNIT (RED)
123
5
4
TH7
TH6
T
H3
TH4
63HS
63H
63L
1
MF2
4
567
CNF2 (WHT)
CNDC (PNK)
CNS (WHT) 31 321
52C (BLK)
31
21S4 (GRN)
31
SV2 (BLU)
31
SV1 (GR
Y
)
31
SS
(WHT)
31
FUSE2 FUSE1
FUSE3 FUSE4
21S4
SV2
SV1
12 34
7654
32
1
54 32 1 32 1
32 1
21
CNAF (WHT
)
CNDC (PNK)
CN2
(WHT
)
CN5 (RED)
7
6
5
4
321
21
CN3 (WHT)
21
CN4 (WHT)
21
6
54321
13
TH8
IGBT
LED1
DCL
TB1
NO FUSE BREAKER 40 A
BRANCH BOX
POWER SUPPL
Y
~/N 220/230/240V 50Hz 220V 60Hz
CE
L
N
S1
S2
S3
ACTM
RS
52C
SCR-N1
SCR-P1
SCR-R
SCR-P2 SCR-N2
SCR-S
N. F
.
P.
B
.
MC
CNAC2 (RED)
31
CNAC1 (WHT)
31
LI NI
L0
N0
CN5
(
RED
)
21
EI
W
V
U
P
N1 N2
I
65
43
21
L1
L2
SW5
SW6 SW1 CN31
SW7 SW2
SW8 SW4
SW9 SW10
7SEG LED
88
SYMBOL
SYMBOL
SYMBOL
NAME
NAME
NAME
TB1 MC MF1, MF2 21S4 SV1 SV2 63HS 63L TH3 TH4 TH6 TH7 TH8 DCL 52C RS ACTM CE
P.
B
63H
Te
rminal Block (Power Supply
, Branch)
Motor for Compressor Fan Motors Solenoid V
alve (Four-W
ay V
alve)
Solenoid V
alve (Hot Gas Bypass)
Solenoid V
alve (Returning oil Bypass )
High pressure Sensor High pressure Switch Low pressure Switch Thermistor (Outdoor Pipe) Thermistor (Discharge) Thermistor (Outdoor2 - Phase Pipe) Thermistor (Outdoor) Thermistor (Heatsink) Reactor 52C Relay Rush Current Protect Resistor Active Filter Module Main Smoothing Capacitor Power Circuit Board
SC - R / S SC - P1, P2 SC - N1, N2 CN2 ~ 5 CNDC CNAF IGBT LED1 LI / LO NI / NO EI CNAC1 / 2 CN5 FUSE1 ~ 4 SW1 SW2 SW4
Screw
Ty
pe
Te
rminal (L
/ N - Phase)
Screw T
ype T
erminal
(DC
V
oltage)
Screw T
ype T
erminal
(DC
V
oltage)
Connector Connector Connector Converter
, Inverter
Light Emitting Diodes (Inverter Control Status) Noise Filter Circuit Board Connection Lead (L
- Phase)
Connection Lead (N - Phase) Connection T
erminal
(Ground)
Connector Connector Controller Circuit Board Fuse (6. 3A) Switch (Forced Defrost, Error History Record Reset) Switch (Self Diagnosis Switch) Switch (T
est Operation )
Connection
Te
rminal (U / V / W - Phase)
U / V / W
SW5
Switch (Function Switch)
SW6 SW7 SW8 SW9 SW10 CN31 LED CNAC CNDC CNS CNF1 CNF2 SS SV1 SV2 CN3S CNDM CN51 CNIT
Switch (Model Select) Switch (Function Setup) Switch Switch (Function for option) Switch (Function for option) Connector Light Emitting Diodes (Operation Inspection Indicators) Connector Connector Connector Connector Connector Connector (Connection for Option) Connector Connector Connector (Connection for Option) Connector <Connected for Option (Contact Input)> Connector (Connection for Option) Connector (Connection for Option)
N. F
.
C. B.
Power turned on
Details
L
W
A
RNING: When the main supply is turned of
f, the voltage [340 V] in the main capacitor will drop to 20 V in approx.2 minut
es
(input voltage : 240 V). When servicing, make sure that LED on the outdoor circuit board gose out, and then wait for at leas
t 1 minute.
L
Components other than the outdoor board may be faulty : Check and take corrective action, referring to the service manual.
Do not replace the outdoor board without checking.
Cautions when Servicing
LED on the controller board display the operation and inspection status as follows. If LED does not light, it indicates that no power is supplied to the board:
Operation / Inspection Display Normal status Faulty status (blinking)
Code
(blinks)
Operation status display
,
such as C5. H7 F3 F9 EA, Eb, EC E6~E9 E0, E3~E5 EE, EF Ed U2 U7 U1 UL U6 UF UH UP U3 U4 U5 U8 U9 PA
Connector (63H) open, connector (63L) open At Ieast 2 connectors open Incorrect wiring in indoor / outdoor unit connection Indoor / outdoor unit communication error Remote controller communication error Combination error
, undefined error
Serial communication error Discharge temperature fault Low-discharge superheating fault, Erroneous connection of refrigerant pipes or the connecting wires High pressure fault (63H operates) Low pressure fault (63L
operates)
Abnormality of power modules Compressor overcurrent shutof
f (Start up locked)
Current sensor fault (P
. B.)
Compressor overcurrent shutof
f fault
Discharge pipe/compressor thermistor (TH4) open or short-circuit Outdoor unit thermistors (TH3,
TH6,
TH7, and
TH8), 63HS, and branch box
thermistors open or short-circuit Heatsink temperature fault Abnormality in outdoor fan motor V
oltage fault, current sensor fault (N. F
.)
Forced compressor stop (Overlap malfunction of drain pump in indoor unit and linear expansion valve in branch box)
WHT BLK
BLK
BLK
WHT
WHT
WHT
RED
RED
BLU
BLU
RED
RED
RED
YL
W
ORN
BRN
RED
GRN /YL
W