Midea MCH2U-18PHH2 Service Manual page 97

Position
YDK70-
6FB
56Ω±8%
Black -
Red (20℃)
76Ω±8%
Red -
Yellow (20℃)
76Ω±8%
Yellow -
Blue (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 KΩ.
YDK180-8GB YSK27-4G
24.5Ω±8% 317Ω±8%
(20℃) (20℃)
19Ω±8% 252Ω±8%
(20℃) (20℃)
19Ω±8% 252Ω±8%
(20℃) (20℃)
Resistance Value
YSK68-4B YDK45-6B
145Ω±8% 345Ω±8%
(20℃) (20℃)
88Ω±8% 150Ω±8%
(20℃) (20℃)
88Ω±8% 150Ω±8%
(20℃) (20℃)
97
YDK53-
YSK25-6L
6FB(B)
627Ω±8% 88.5Ω±8%
(20℃) (20℃)
374.3Ω±8% 138Ω±8%
(20℃) (20℃)
374.3Ω±8% 138Ω±8%
(20℃) (20℃)