Position
Resistance Value
YDK70-6FB
YDK180-8GB
YSK27-4G
YSK68-4B
YDK45-6B
YSK25-6L
YDK53-
6FB(B)
Black -
Red
56Ω±8%
(20
℃
)
24.5Ω±8%
(20
℃
)
317Ω±8%
(20
℃
)
145Ω±8%
(20
℃
)
345Ω±8%
(20
℃
)
627Ω±8%
(20
℃
)
88.5
Ω±8%
(20
℃
)
Red -
Yellow
76Ω±8%
(20
℃
)
19Ω±8%
(20
℃
)
252Ω±8%
(20
℃
)
88Ω±8%
(20
℃
)
150Ω±8%
(20
℃
)
374.3Ω±8%
(20
℃
)
138
Ω±8%
(20
℃
)
Yellow -
Blue
76Ω±8%
(20
℃
)
19Ω±8%
(20
℃
)
252Ω±8%
(20
℃
)
88Ω±8%
(20
℃
)
150Ω±8%
(20
℃
)
374.3Ω±8%
(20
℃
)
138
Ω±8%
(20
℃
)
5.4-way valve
1. Power on, use a digital tester to measure the voltage, when the unit operates in cooling, it is 0V. When the
unit operates in heating, it is about 230VAC.
If the value of the voltage is not in the range, the PCB must have problems and need to be replaced.
2 Turn off the power, use a digital tester to measure the resistance. The value should be 1.8~2.5 K
Ω.
Summary of Contents for M2OC-18HFN1-M
Page 19: ...8 Wiring Diagrams 8 1 Wiring diagram of 1 drive 2 outdoor M2OC 18HFN1 M M2OD 18HFN1 M...
Page 20: ...PCB board of M2OC 18HFN1 M M2OD 18HFN1 M...
Page 21: ...IPM board of M2OC 18HFN1 M...
Page 22: ...IPM board of M2OD 18HFN1 M...
Page 23: ...8 2 Wiring diagram of 1 drive 3 outdoor M3OD 27HRDN1 M M3OC 30HRFN1 M...
Page 24: ...PCB board of M3OC 30HRFN1 M...
Page 25: ...IPM board of M3OC 30HRFN1 M...
Page 26: ...PCB board of M3OD 27HRDN1 M...
Page 27: ...IPM board of M3OD 27HRDN1 M...
Page 28: ...8 3 Wiring diagram of 1 drive 4 outdoor M4OC 36HRFN1 M...
Page 29: ...PCB board of M4OC 36HRFN1 M...
Page 30: ...IPM board of M4OC 36HRFN1 M...
Page 31: ...PFC board of M4OC 36HRFN1 M...
Page 66: ...IPM for dual tri zone IPM for qua zone P N for dual tri zone...
Page 67: ...P N for qua zone...
Page 68: ...bridge rectifier for dual tri zone bridge rectifier for qua zone...
Page 69: ...Remark Measure the DC voltage between and port The normal value should be 190V 250V...
Page 71: ...Two ports of the inductance Inductance...
Page 72: ......
Page 77: ......
Page 79: ......
Page 81: ......
Page 83: ......
Page 96: ...6 EXV check Disconnect the connectors...
Page 98: ...Red Blue Red Yellow...
Page 99: ...Brown Orange Brown White...
Page 114: ...Screws of front panel Screws of right rear panel Screws of top cover...
Page 128: ......