York YHKMXH009BARX-FX, Service Manual, Page: 150 / 269

YHUJYH028BARXA-X YHUJYH036BARXA-X
PTC
SW5
SW4
SW2
LP
HP
C
ON5
Module_COM
ELECTRONIC CONTROL
UNIT
M
LED1
DC F
AN
MOT
OR
250V
AC T6.3A
FUSE
C
ON4
ACN
ACL
ON
4
3
2
1
CRANKCASE HEA
TER
L
N
Power supply
SW6
B
W
W
B
W
U
COMPRESSOR
R
V
B
W
PMV
M
Definition of SW6
SW1
SW2
SW3
SW4
ON
Definition of SW1
SW1-1
SW1-2
Definition of SW7
SW7-1
SW7-2
SW7-3
SW7-4
COMMUNICA
TION CHOOSE
.
FOR MODEL:YHUJYH028BARXA-X
、
YHUJYH036BARXA-X
ON
OFF
ON
OFF
Y/G
OR: Orange B: Black BL:Blue Y/G: Y
ellow/Green R: Red W
:white
Tcm: Condensing T
emp. Sensor
Ts: Compressor Suction T
emp. Sensor
Ta: Ambient T
emp. Sensor
Td: Compressor Discharge T
emp. Sensor
Te: Defrosting T
emp. Sensor
Tm: Module T
emp. Sensor
PMV
: Electronic expansion valve
*Dashed part is optional
P2(N)
POWER CIRCUIT BOARD
T25A
250V
AC
FUSE
P1(L)
CN1
RL1
P7
P8
P6
P5
P4
P3
Y/G
1
2
3
4
5
6
78
ON
W
W
B
B
0150512397Y
CN3
MODULE
CN4
Reactor
CN1 CN2
CN5 CN7 CN6
CN9
Tm
CN11
B
W
3
4
CN16
4-W
AY
VA
LV
E
CN19
SW1
ON
4
3
2
1
SW7
CN13
CN8
CN7
Tc
m
CN5
Ts
CN6
Td
CN4
Te
CN3
Ta
SW3
CN2
CN1
CN10
1 W
2
3
SIG
C
ON1
B
R
Y/G
To indoor unit
OR OR
R
OFF
ON
OFF
ON
COMMUNICA
TION CHOOSE
.
FOR SOME P
AR
TICULAR MODEL
Definition
OFF ON
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
State when out of factory
（
Normal
operating
）
Compulsive Heating Compulsive Cooling
Defrost timing Rated Operating
SW1-3
SW1-4
SW1-5
SW1-6
SW1-7
SW1-8
MODEL
OFF
OFF
ON
ON
ON
ON
ON
OFF
OFF
ON
ON
ON
ON
ON
ON
OFF
Definition
Note
：
1.SW1-1&SW1-2 are used to choose capacity;SW1-3 is for power module ; SW1-4 is for fan motor ,ON--DC fan OFF--AC fan; SW1-5 is for F
AN quantity ,ON--single OFF-double;SW1-6 is
for communication ,ON--new
，
OFF--old;SW1-7 is for power
source,ON--single phase
，
OFF--three phase;SW1-8 is for quiet
operation,ON--available
，
OFF-unavailable
.
2. Once out of factory
,
do not change the switches without guidance
LED2
C
ON2
C
ON3
BL
OR
OR
YHUJYH028BARXA -X
YHUJYH036BARXA -X
148