Bosch AHUW036A2, Руководство по обслуживанию

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Error handling instructions for Split outdoor unit
Split ODU – 6 720 817 722 (2015/06) 27
2.13.2 Error code 53
Check point
1. Check the input power AC 230V
2. Check that the communication wires are correctly connected. Adjust
the connection of wire confirm the wire of “Live”, “Neutral”.
3. Check the resistance between communication line and GND (normal:
over 2M

).
4. Check that the connector for communication is correctly connected.
5. Make sure you have connected to the communication line soldering
(if you do not connect by soldering, a communication error (CH05/
CH53) occurs by noise)
2.14 Error code 54
Fig. 24 Error code 54 diagnosis and countermeasure flow chart
[A] Items for checking
[B] Sub-items for checking
[1] Installation
[2] Fuse damage (R and S phases)
[3] Inverter PCB
[4] Checking N-phase
[5] Checking for power phase loss
[6] Checking for open and reverse phase
[7] AC load
2.15 Error code 60
Check point
▶ Check the EEPROM check sum and direction
Display code Title Cause of error Check point & Normal condition
53 Communication
PCB(Heater)
-->PCB(Inverter) • Poor communication 1. Power input AC 230V
2. The connector for transmission is disconnected
3. The connection wires are miss-connected
4. The communication line is shorted at GND
5. Transmission circuit of PCB (inverter) is abnormal
6. Transmission circuit of PCB (heater) is abnormal
Table 28 Error code 53
Display
code
Title Cause of error
Check point & Normal
condition
54 Open and
reverse
phase error • Prevention
of phase
unbalace and
prevention
of reverse
rotation of
constant -
rate
compressor
1. Main power wiring fault
Table 29 Error code 54
A B
1
2
3
4 5
6
7
6 720 817 722-34.1I
Display
code
Title Cause of error
Check point & Normal
condition
60 PCB
(inverter)
and main
EEPROM
check sum
error • EEPROM
access error
and check
sum error
1. EEPROM contact defect /
wrong insertion
2. Different EEPROM
version
3. ODU inverter and main
PCB assembly 1 damage
Table 30 Error code 60
Is EEPROM insertion
normal? No -> 1. Check EEPROM insert
direction / connection
condition
2. Check EEPROM check sum
-->Replace if abnormality is found
Yes
Is PCB assembly 1
normal?
No
-> 1. Replace PCB assembly 1
Yes
Is main PCB assembly 1
normal? No -> 1. Replace main PCB assembly 1
Yes
• Recheck power and
installation condition
Table 31 Error diagnosis and countermeasure chart