Error Codes - Bosch MDCI20-3 User Manual

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.
5. ERROR CODES
Table 5-1
No.
1 COMM.Fault between DSP and chip
2 COMM.Fault between communication chip and main chip
3 P6 protection has been activated 3 times in 30 minutes
4 P2 protection has been activated 3 times in 30 minutes
5 The number of indoor units decreases
6 Reserved
7 M-HOME for the indoor and outdoor units do not match
8 Reserved
9 Communication fault between the outdoor and indoor units
10 T3 & T4 temperature sensor fault
11 Voltage protection fault or a lack of Phase B, Phase N
12 DC fan motor fault
13 Discharge temperature sensor fault
14 A fan in the A region run for more than 5 minutes in heat mode
15 E6 protection has been activated 2 times in 10 minutes
16 Inverter compressure maximum temperature protection
17 High pressure protection or exhaust temperature switch protection
18 Low pressure protection
19 Outdoor input current protection
20 Compressor discharge high protection
21 Outdoor condenser high temperature protection
22 Inverter module protection
23 Strong wind protection
24 Evaporator high temperature protection
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.
6 720 862 442 (2016/04)
Failure of Protection Type
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.
Recovery Mode
Recoverable
Recoverable
Irrecoverable
Irrecoverable
Recoverable
Recoverable
Irrecoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Irrecoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
MDCI Series – All DC Inverter Outdoor Units (Three phase)
Fault Code
H0
H1
H4
H5
H7
H8
HF
E1
E2
E4
E5
E6
E7
EA
EB
P0
P1
P2
P3
P4
P5
P6
P8
PE