Gree MULTI VRF SYSTEM II GMV-120WL/A-T User Manual

61
DC Inverter Multi VRF System II
Service Manual
(3) Low-pressure protection
Low pressure
protection
Measure whether the low
pressure is too low with
manomete r
Measure whether the
pressure switch is
normal
Replace main board of
outdoor unit
Replace pressure
switch
Check whether gas valve
and liquid valve are open
completely
Open the valve
completely
Check whether the
panel of outdoor unit is
covered and sealed well
Check whether the air can blow
smoothly at the heat exchanger
of indoor unit and outdoor unit
Check whether the indoor fan
and outdoor fan can operate
Cover the panel of
outdoor unit well
Eliminate obstacles and
sundries
Measure the circumstances
of fan motor and signal input
Check whether the indoor
swing blade is open
completely
Measure the
circumstances of swing
motor and signal input
Check whether the electronic
expansion valve for indoor
unit and outdoor unit can
operate normally
Engage valve and coil
Blockage for system
pipeline
Mainly check the air inlet and air outlet connecting indoor
unit and main pipe, and the expansion valve for indoor unit
and outdoor unit. Replace electronic expansion valve , dry
strainer, ect.
yes
yes
yes
yes
yes
yes
yes
no
no
no
no
no
no
no
no
no
Check whether the
refrigerant-charging volume
is insufficient
Charge refrigerant according to the volume on nameplate; check
whether there‹s leakage for the system
yes
yes
no

Gree MULTI VRF SYSTEM II GMV-120WL/A-T Specifications

General

Brand	Gree
Model	MULTI VRF SYSTEM II GMV-120WL/A-T
Category	Inverter
Language	English