Gree GMVVQ1015WM/C-X, Service Manual

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Gree GMV6 HR DC Inverter VRF Units Service Manual
303
4.2.3.1 Mechanical Inspection
（
1
）
Confirm that the unit Power is disconnected.
（
2
）
Find the solenoid valve coil, check whether the fixing screw is loose and whether the
valve and coil have any apparent exceptions.
4.2.3.2 Electrical Inspection
Compare the measured coil resistance with the normal coil resistance to check whether the
coil is damaged.
（
1
）
Power off the mode exchange box. Remove the electrical appliance cover.
（
2
）
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 Interface No. Color Resi
stance (Ω)
Normal range of deviation
Cooling solenoid valve CN2
、
CN5
、
CN9
、
CN19 Red 2085 ±10%
Heating solenoid valve CN1
、
CN4
、
CN7
、
CN18 Blue 2085 ±10%
Cooling balance solenoid
valve
CN3
、
CN6
、
CN10
、
CN20
White 2085 ±10%
Gas bypass valve CN21 Black 2085 ±10%