6 720 862 442 (2016/04)
MDCI Series – All DC Inverter Outdoor Units (Three phase)
6 | ERROR CODES
•
During operation, the fan motor in the outdoor unit may stop running
under high temperatures.
•
When one unit is selected in fan mode and others are heating, the fan
may stop to prevent hot air being moved around.
4.7 Defrost in the heating operation
•
During heating operation, frost can accumulate on the outdoor unit.
To increase efficiency, the unit will start defrosting for approximately
2-10minutes depending on the amount of accumulated frost. The
frost will then thaw and drip away from the unit.
•
During defrosting, outdoor unit and indoor unit fans will periodically
stop.
5. ERROR CODES
Table 5-1
No.
Failure of Protection Type
Recovery Mode
Fault Code
1
COMM.Fault between DSP and chip
Recoverable
H0
2
COMM.Fault between communication chip and main chip
Recoverable
H1
3
P6 protection has been activated 3 times in 30 minutes
Irrecoverable
H4
4
P2 protection has been activated 3 times in 30 minutes
Irrecoverable
H5
5
The number of indoor units decreases
Recoverable
H7
6
Reserved
Recoverable
H8
7
M-HOME for the indoor and outdoor units do not match
Irrecoverable
HF
8
Reserved
Recoverable
E1
9
Communication fault between the outdoor and indoor units
Recoverable
E2
10
T3 & T4 temperature sensor fault
Recoverable
E4
11
Voltage protection fault or a lack of Phase B, Phase N
Recoverable
E5
12
DC fan motor fault
Recoverable
E6
13
Discharge temperature sensor fault
Recoverable
E7
14
A fan in the A region run for more than 5 minutes in heat mode
Recoverable
EA
15
E6 protection has been activated 2 times in 10 minutes
Irrecoverable
EB
16
Inverter compressure maximum temperature protection
Recoverable
P0
17
High pressure protection or exhaust temperature switch protection
Recoverable
P1
18
Low pressure protection
Recoverable
P2
19
Outdoor input current protection
Recoverable
P3
20
Compressor discharge high protection
Recoverable
P4
21
Outdoor condenser high temperature protection
Recoverable
P5
22
Inverter module protection
Recoverable
P6
23
Strong wind protection
Recoverable
P8
24
Evaporator high temperature protection
Recoverable
PE
Display Function
1. When in stand-by, the LED display will show the amount of indoor units communicating with the outdoor unit.
2. When the unit is in operation, the LED display will show the frequency value of the compressor.
3. When the unit is in defrost, the LED will display ‘df’.
4. The power cord type designation is H07RN-F.
