Bosch AHUW036A2 Service Manual page 23

2.11 Error code 41, 44, 45, 46, 48
Display
code Title Cause of error
41 D-pipe • Open / short
sensor
• Soldered
(inverter)
poorly
• Internal
circuit error
44 Air sensor • Open / short
• Soldered
poorly
• Internal
circuit error
45 Condenser • Open / short
Mid-pipe
• Soldered
sensor
poorly
• Internal
circuit error
46 Suction • Open / short
pipe sensor
• Soldered
poorly
• Internal
circuit error
48 Condenser • Open / short
out-pipe
• Soldered
sensor
poorly
• Internal
circuit error
Table 21 Error code 35
1
Fig. 20 Check sensor
[1] Unplugged; check the resistance (10k)
[2] Plugged; check the voltage (2.5V DC)
Split ODU – 6 720 817 722 (2015/06)
Check point & Normal
condition
1. Bad connection of
thermistor connector
2. Defect of thermistor
connector (open / short)
3. Defect of outdoor PCB
(inverter)
1. Bad connection of
thermistor connector
2. Defect of thermistor
connector (open / short)
3. Defect of outdoor PCB
(inverter)
1. Bad connection of
thermistor connector
2. Defect of thermistor
connector (open / short)
3. Defect of outdoor PCB
(inverter)
1. Bad connection of
thermistor connector
2. Defect of thermistor
connector (open / short)
3. Defect of outdoor PCB
(inverter)
1. Bad connection of
thermistor connector
2. Defect of thermistor
connector (open / short)
3. Defect of outdoor PCB
(inverter)
Error handling instructions for Split outdoor unit
2.11.1 Error diagnosis and countermeasure flow chart
Is sensor connected to No ->
PCB (inverter)
correctly?
Yes
Is sensor value correct? No ->
Yes
• Replace
corresponding PCB
(inverter)
Table 22 Error diagnosis and countermeasure chart
2
1. Connect sensor to PCB
(inverter) correctly
1. Replace sensor
V
6 720 817 722-18.1I
23