Bosch CLC6101i-W 50 HE - Page 37

4-17
Climate Class 6100i / 6000i / 8100i / 8000i
Problem
symptom
Outdoor
unit
indica-
tion
(LED1)
Malfunction
No.*
Content of diagnosis
Check point Action
Main Sub Main Sub
Indoor and
outdoor
units do
not oper-
ate.
7-time 7 0 Outdoor unit AC
Current
AC over current
error
1) Check the outdoor unit
air outlet for blockage.
1) Ensure unobstructed air
ow from the outdoor
unit air outlet.
2) Check the outdoor unit
fan for proper rotation.
2) Check the outdoor unit
fan motor.
1 AC current error
when OFF
1) IPM continuity check. 1) Replace the outdoor
IPM PWB.
2 AC maximum
current
error
1) Check the outdoor unit
air outlet for blockage.
1) Ensure unobstructed air
ow from the outdoor
unit air outlet.
2) Check the outdoor unit
fan for proper rotation.
2) Check the outdoor unit
fan motor.
3 AC current de-
ciency error
1) Check if there is an
open-circuit in the sec-
ondary winding of the
current transformer of
the outdoor unit control
PWB.
1) Replace the outdoor
unit control PWB as-
sembly.
2) Check if the refrigerant
volume is abnormally
low.
2) Charge the specied
amount of refrigerant.
3) Check if the refrigerant
ows properly.
3) Correct refrigerant
clogs. (Stop valve, pipe,
expansion valve).
Indoor and
outdoor
units do
not
operate.
9-time 9 0 Cycle
temperature
Thermistor
installation error
or 4-way valve
error.
1)Check the thermistor
(heat exchanger) and (2-
way valve) are installed
in correct positions.
1)Correct the installation.
2)Check resistance of ther-
mistors (heat exchanger
and 2-way valve).
2)Charge the specied
amount of refrigerant.
3)Check the 4-way valve for
proper operation.
3)Replace the 4- way
valve.
4)No abnormality found in
above inspections (1),
through(3).
4)Replace the outdoor unit
control PWB assembly.
Indoor and
outdoor
units do
not
operate.
4 4 way valve error
or Gas leak error.
1) Check the indoor/
outdoor heat exchanger
thermistors are installed
in correct positions.
1) Correct the installation.
2) Check if the refrigerant
volume is abnormally
low.
2) Change the specied
amount of refrigerant.
3) Check the 4-way valve
for proper operation.
3) Replace the 4-way
valve.
Indoor and
outdoor
units do
not
operate.
10-time 10 2 EEPROM
error
CPU(outdoor)
RAM data error
-
-
1) Replace the outdoor
unit control PWB as-
sembly.
3 CPU error