Chigo CS-25V1A-H1; CS-35V1A-E2; CS-50V9A-S; CS-70V9A-T - 11 The malfunction code: P8 (lack the refrigerant or reverse valve fault)

The faulty cause
1、 the high and low pressure valve are
closed
2、 the refrigerant leaks from the A/C
system
3、 the indoor and outdoor pipe temp
sensor are loose or hang in the air.
4、 the indoor and outdoor pipe temp
sensor has been dama
g
ed.
11、The malfunction code：
P8 （lack the refrigerant or reverse valve fault）
Turn off the power
Check whether the high and low pressure valves are open
N
Open the high and low pressure
valve
Check whether the system pressure is normal （the
normal value ： high pressure3.06Mpa low
pressure1.6Mpa）
N
Due to refrigerant leakage，kook for the
leak to weld it，then charge anew the
refrigerant to the system.Fig.9～17
Please change it if the sensor wire is
short circuit or open circuit.
N
Y
Check whether the indoor and outdoor pipe
temp sensor are loose or hang in the air.
Y
Please arrange the indoor and outdoor
sensor correctly and change it if the probe
spring piece is damaged.
Y
Fig. 15、 please make sure that
there is enough soap bubble.