DC Inverter Multi VRF System
26
(2) Following circumstances are not malfunctions.
Malfunction
Reason
Unit doesn’t run.
Unit starts up immediately after it is
turned off.
Overload protection switch makes it run after a 3-min
delay.
Power is just turned on.
Standby operation lasts for about 1min.
Mist comes from
the unit.
Under cooling.
Indoor air with high humidity is cooled rapidly.
Noise is emitted.
Slight cracking sound is heard when unit
is just turned on.
It is the noise when electronic expansion valve is
initialized.
There is consecutive sound when
cooling.
It is the sound for gas refrigerant flowing in the unit.
There is sound when unit starts or stops. It is the sound when gas refrigerant stops flowing.
There is slight and consecutive sound
when unit is running or after running.
This is the sound of drainage operation.
Cracking sound is heard when unit is
running or after running.
This is the sound caused by the expansion of panel
and other parts of the unit due to temperature
change.
Unit blows out
dust.
Unit starts up after not operating for a
long time.
Dust in indoor unit is blown out.
Unit emits odor.
Under operation.
Unit absorbs the room odor and then blows it out.
7 Error Indications
Inquiry method of error indication: combine division symbol and content symbol to check the
corresponding error.
Indoor:
Error
Code
Content
Error
Code
Content
Error
Code
Content
L0
Indoor Unit Error
L9
Quantity Of Group Control
Indoor Units Setting Error
d7
Humidity Sensor Error
L1
Indoor Fan Protection
LA
Indoor Units Incompatibility
Error
d8
Water Temperature Sensor
Error
L2
E-heater Protection
LH
Low Air Quality Warning
d9
Jumper Cap Error
L3
Water Full Protection
LC
Outdoor-Indoor
Incompatibility Error
dA
Indoor Unit
Hardware Address Error
L4
Wired Controller Power
Supply Error
d1
Indoor Unit Circuit Board
Error
dH
Wired Controller Circuit
Board Error
L5
Anti-freezing Protection
d3
Ambient Temperature Sensor
Error
dC
Capacity DIP Switch
Setting Error
L7
No Master Indoor Unit
Error
d4
Inlet Pipe Temperature
Sensor Error
dL
Outlet Air Temperature
Sensor Error
L8
Power Insufficiency
Protection
d6
Outlet Pipe Temperature
Sensor Error
dE
Indoor Unit CO
2
Sensor
Error
o1
Over low voltage of IDU
bus
o2
Over high voltage of IDU bus
o3
IDU IPM module protection
o4
IDU startup failure
o5
IDU overcurrent protection
o6
IDU current detecting
circuit error
o7
IDU non-synchronism
protection
o8
IDU drive communication
error
o9
Communication error of
IDU master controller
oA
Over high temperature of
IDU module
ob
Temperature sensor error of
IDU module
oC
IDU charging circuit error
o0
Other drive error
db
Special Code:
Field Debugging Code
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Содержание GMV-12WP/A-T
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