Gree GMVVQ1015WM/C-X, Руководство по обслуживанию

Страница: 248 / 433

Gree GMV6 HR DC Inverter VRF Units Service Manual
246
4.1.3.1 Mechanical Inspection
(1) Confirm that the unit Power is disconnected.
(2) Find the solenoid valve, check whether the fixing screw is loose and whether the valve and coil
have any apparent exceptions.
4.1.3.2 Electrical Inspection
Compare the measured coil resistance with the normal coil resistance to check whether the coil is
damaged.
(1) Power off the unit. Remove the electrical appliance cover after the ODU stops.
Warning: Electric shock
(2) Remove the electrical appliance cover and check whether the connecting terminal of the
solenoid valve is firm.
(3) Disconnect the corresponding valve's coil terminal from the main board and use a multimeter to
measure the coil resistance.
(4) If the measured resistance does not match with that in the following table, the coil needs to be
replaced.
Coil
Resistance (Ω)
Normal
range of
deviation
ODU capacity (HP)
8
、
10
、
12 14
、
16 18
、
20,
、
22
Oil-return
solenoid valve 1
2085 ±10%
Oil-return
solenoid valve 2
— 2085 ±10%
Low-temperature
oil-return
solenoid valve
2085 ±10%
Subcooler
solenoid valve
1273 ±10%
Gas bypass valve 2085 ±10%
High pressure
valve
2085 ±10%
Low pressure
valve
2085 ±10%
Low pressure
bypass valve
2085 ±10%
Pressure valve 2085 ±10%
Inlet liquid valve 2085 ±10%
Gas balance
valve
2085 ±10%
High pressure
bypass valve
2085 ±10%
Drain valve 2085 ±10%