High Pressure Protection - Gree GMV-24WL/C-T Service Manual

GREE

(2) High pressure protection

High pressure
protection
Measure whether the high pressure
is too high with manometer
Check whether the refrigerant-
charging volume is superfluous
Check whether gas valve and liquid
valve are open 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
Check whether the indoor swing
blade is open completely
Check whether the electronic expansive value for
indoor unit and outdoor unit can operate normally
Blockage for
system pipeline
NO
Measure whether
the pressure
switch is normal
YES
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
DC Inverter Side Discharge VRF Ⅱ for North America
YES
NO
Charge refrigerant according to the volume on
nameplate; check whether there is leakage for the
system
Open the valve
completely
Cover the panel of
outdoor unit well
E liminate obstacles
and sundries
Measure the
circumstances of fan
motor and signal input
Measure the
circumstances of swing
motor and signal input
Engage valve and
coil
Mainly check the air inlet and air outlet connecting
indoor unit and main pipe, and the expansive valve
for indoor unit and outdoor unit. Replace electronic
expansion valve, dry strainer,ect.
101
Replace main
board of outdoor
unit
Replace
pressure switch