Gree R410A, Manual

Page: 64 / 90

6 2
for North America
Photovoltaic Direct-driven VRF
(2) Low-pressure protection
Ｌｏｗ ｐｒｅｓｓｕｒｅ
ｐｒｏｔｅｃｔｉｏｎ
Ｍｅ ａｓｕｒｅ ｗｈ ｅｔｈｅ ｒ ｔｈｅ ｌｏｗ
ｐｒｅｓｓｕｒｅ ｉｓ ｔｏｏ ｌｏｗ ｗｉｔｈ
ｍａ ｎｏ ｍｅ ｔｅｒ
Me asure wh ether the
pressure switch is
no rm al
R e place ma in boa rd of
ou tdoor unit
R e place pressure
sw itch
C h eck wh ethe r ga s valve
and liquid valve are ope n
comp letely
Op en t he valve
comp letely
Ch eck wh ether the
panel of outdo or unit is
covered and sealed well
Ch eck wh ether the air can blow
sm oo thly at the heat exchanger
of i nd oo r un it and outdo or unit
C h eck wh ethe r the indoor f an
and ou tdoor fan can op erate
C o ver the pa ne l of
ou tdoor unit we ll
E liminate ob stacles and
sund ries
Me asure the circum stances
of f an motor and signal inpu t
C h eck wh ethe r the indoor
sw ing blade is ope n
comp letely
Me asure the
circum stances of swing
mo tor and sign al i np ut
C h eck wh ethe r the electron ic
expa ns ion valve for indoor
unit and outdoor unit can
op erate no rm ally
E nga ge valve and coil
Blockage f or system
pipe line
Ma inly che ck t he air i nlet and air outlet conne cting indoor
unit and main pipe , and the expa ns ion valve for indoor unit
and ou tdoor unit. Rep lace electronic expa ns ion valve , dry
strainer, ect.
yes
yes
yes
yes
yes
yes
yes
no
no
no
no
no
no
no
no
no
C h eck wh ethe r the
refrigerant-charging volum e
is i ns uffi cien t
C h arge refrige rant according to the volum e on nam ep late; check
wh ethe r there‹s leakage for the system
yes
yes
no