Mitsubishi SRC208CENF-L, User Manual

Page: 49 / 68

1-49
Notes (1) ; denotes magentized relay
×
: denotes demagnetized relay
(2) Th
1
is room temperature thermistor. Th
2
(the heat exchanger thermistor) is the hot start, hot keep, and frost prevention thermistor.
(for details, refer to pages 19, 20, 22)
(3) Preset values :
23DH (defroster stop thermostat) : opens at over 14˚C
63H (overload protection high pressure switch during heating) : closes at 1.86(19.0 )/ opens at 2.41(24.5) [MPa(kgf/cm
2
)]
Meaning of marks
Symbol Parts name Symbol Parts name
C
C
Capacitor for CM Th
1, 2
Thermistor
CF
O
Capacitor for FM
O
ZNR Varistor
CM Compressor motor 20S 4 way valve. coil
F Fuse 51C Motor protector for CM
FM
I
Fan motor (Indoor unit)
52C
Magnetic contactor for CM
FM
O
Fan motor (Outdoor unit) 52X
A, B, 1
Auxiliary relay
LM Louver motor 63H High pressure switch
PC Photo coupler 23DH Thermostat (Defrost)
Table of relay operations
Operation
Cooling Heating Defrost
Relay symbol Control part
52X
1
20S
× ×
52X
A
FM
O
× ×
52X
B
× ×
52C CM
Color symbol
BK Black
BL Blue
BR Brown
RD Red
OR Orange
WH White
Y Yellow
Y/GN Yellow/Green
Models SRK50HA, 56HA
Note(1) This figure shows SRK56HA. As for
SRK50HA, 51C differs as shown in the fig-
ure below.
51C
FM
I
LM
Y
BL
WH
BK
RD
5
4
3
2
1
CNU
F
250V
3.15A
ZNR
Printed circuit board
Power source
1 Phase 220/230/240V 50Hz
CNM
Y/GN
Y/GN
G
BL
BR
52C-4 52C-3 S 20S
52X1
52C
52X
1
PC
CNG
CNH
CNE
23D
52C
RD
OR
WH
BK
BL
RD
WH
BK
TH
1
TH
2
1
2
3
4
1
2
RD 63H
52X
B
52X
A
RD
WH
WH
WH
BK
BK
WH RD
RD
RD
RD
RD
BL
Cc
BL
BK
BK
BK
23
DH
51C
WH
BK
BK
BK
BK
OR
OR
CF
0
20S
OR
OR
RD
3
4
52X
B
CM
52X
A
( )
Indoor unit
Outdoor unit
Wireless
R-Amp
Display
Back up sw
FM0