4
4.5 Cooling and heating operation
● The indoor unit of the intelligent inverter centralized air
conditioner can be controlled solely, but the indoor unit in the
same system can not run cooling and heating at the same time.
● When the Cooling and Heating operation confront with each
other, the Indoor Unit which are running on Cooling Mode would
stop and there will be Standby or No Priority displayed in the
Control Panel. Those Indoor Units which are running on Heating
Mode will run continuously.
● If the Air Conditioner Administrator has set running mode,
then the air conditioner can not run on modes other than the
presetted.Standby or No Priority will be displayed in the Control
Panel.
4.6 Features of heating operation
● Warm air will not be blown out immediately at the beginning of
the heating operation, 3~5 minutes ago (depends on the indoor
and outdoor temperature), until the indoor heat exchanger
become hot, then blows out warm air.
● During operation, the fan motor in the outdoor unit may stop
running under high temperature.
● During Fan Operation, if other Indoor Units are running on
Heating Mode, the fan may stop in order to prevent sending
heat wind.
4.7 Defrost in the heating operation
● During heating operation, outdoor unit sometimes will frost. To
increase efficiency, the unit will start defrosting automatically
(about 2~10 minutes), and then water will be drained out from
outdoor unit.
● During defrosting, both the fan motors in the outdoor unit and
indoor unit will stop running.
5. MALFUNCTION CODE OF OUTDOOR UNIT
Table 5-1 (8KW)
No.
Fault or protection type
Recovery mode
Error code
1
Module board stop abnormally
Recoverable
EE
2
Communication error between indoor and outdoor unit
Recoverable
E2
3
Outdoor heat exchanger temperature sensor (T3) error or outdoor ambient
temperature sensor (T4) error
Recoverable
E4
4
Input voltage protection
Recoverable
E5
5
DC fan protection
Recoverable
E6
6
Discharge pipe temperature sensor error
Recoverable
E7
7
EEPROM mismatch
Unrecoverable
E9
8
Compressor parameters mismatch
Unrecoverable
E.9.
9
E6 error occurs more than six times in an hour.
Unrecoverable
Eb
10
PFC error (reserved)
Recoverable
EF
11
Heat exchanger temperature sensor(reserved)
Recoverable
EH
12
Cooling ambient temperature is below -5 degrees Celsius
Recoverable
EP
13
Communication fault between main board and module board
Recoverable
H0
14
M-Home mismatch (reserved)
Recoverable
HF
15
L0 error occurs three times in one hour.
Unrecoverable
H4
16
Number of indoor units decreased or increased error
Recoverable
H7
17
IPM module protection
Recoverable
L0
18
DC bus low voltage protection
Recoverable
L1
19
DC bus high voltage protection
Recoverable
L2
20
MCE error (reserved)
Recoverable
L4
21
Zero speed protection
Recoverable
L5
22
Phase sequence error
Recoverable
L7
23
Compressor over-current protection
Recoverable
LA
24
Compressor current sampling circuit fault (reserved)
Recoverable
LC
25
Compressor start-up error (reserved)
Recoverable
LH
26
Radiator surface high temperature protection
Recoverable
PL
27
System high voltage protection (reserved)
Recoverable
P1
28
System low voltage protection
Recoverable
P2
29
Over-current protection
Recoverable
P3
30
Discharge temperature (T4) protection
Recoverable
P4
31
Outdoor heat exchanger temperature(T3) protection
Recoverable
P5
32
Typhoon protection
Recoverable
P8
33
T2 indoor unit evaporator temperature protection
Recoverable
PE
Содержание MDV-V100W/DN1
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