Gree GMVVQ1015WM/C-X, Руководство по обслуживанию

Страница: 137 / 433

Gree GMV6 HR DC Inverter VRF Units Service Manual
135
E1 System Overpressure
Pro tection
Whet her t he
high pressure of the unit
(measured by t he external
pressure gauge system) is
above 4.2 MPa?
Whether th e
high pr essure sensor is
normal?
Whether th e check
valve o f th e o utdo or unit
is fully open?
Whether th e o utd oor unit's
pan el i s fu lly closed?
Whether the air
inlet or return pipes for indoor
and outdoor units are short
circuited or blocked?
Whether th e i ndoor
units, outdoo r un its and fa ns
work pr operly?
Whether th e
air guid e lo uver o f th e in door
unit is fully op en?
Whether th e
indo or and outdoor
electronic exp ansion va lves
work pr operly?
Whether th e i ndoor and
outdoo r fins a re d irty or
blocked?
Clean the fins
Check the electro nic expan sio n
valve a nd the main boa rd
Check the swing motor and
inpu t si gnal
Replace th e main control
boa rd
Cl e an th e p ip e s to a vo id s ho r t
circuit
Reinsta ll the outdoor un it's
pan el
Ful ly o pe n th e che ck val ve
of the outdoor un it
Whether th e h igh pressu re
switch operates p roperly?
Replace th e main bo ard of
outdoo r un it
Replace th e h igh pressu re
switch
Yes
No
No
No
No
No
No
No
No
Yes No Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Replace th e p ressur e
sensor
Replace th e main bo ard of
outdoo r un it
Whether th e o utd oor
ambien t te mp erature
exceeds 50 deg rees?
No
System protectio n en abled and
no special car e re quired
Yes
Yes
Whether th e fan inpu t
signal is n ormal?
Replace th e motor
No
Yes
Are the pipes clo gged?
Re-weld th e p ipes
Yes
No
Excessive
refriger ant in the
unit
Remove the refrigera nt for 1 kg e ach time, keep
the unit ru nning for 1.5 hou rs and then observe
whether th e system protection is e nabled.
Repea t the op erations a bove u nti l no system
protection is triggere d