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No.
Fault code
Fault
Cause/Remedy
5
4
3
2
1
11
∘
●
∘
●
●
Processor fault
Controller problem, external
unit: Check the connecting
cable and jumper settings;
replace controller
12
∘
●
●
∘
∘
EEPROM faulty
Device operates with ROM
parameters; replace the con-
troller of the external unit
13
∘
●
●
∘
●
DC undervoltage
Check the voltage at the ex-
ternal unit
14
∘
●
●
●
∘
DC overvoltage
15
∘
●
●
●
●
AC undervoltage
16
●
∘
∘
∘
∘
Communication error
Incompatible controllers of
the internal device and the
external unit: Replace the
controller of the internal de-
vice
17
●
∘
∘
∘
●
No communication
Check the electrical con-
necting cable between the
internal device, the external
unit and earth
...
(N/A)
20
●
∘
●
∘
∘
Processor overtem-
perature cut-out
21
●
∘
●
∘
●
Defrosting
22
●
∘
●
●
∘
Compressor over-
heated
23
●
∘
●
●
●
Compressor overcur-
rent
24
●
●
∘
∘
∘
No feedback, external
fan
25
●
●
∘
∘
●
External fan idle
26
●
●
∘
●
∘
Compressor idle
Change over to standby and
restart
27
●
●
∘
●
●
Poor communication
Check the electrical con-
necting cable between the
internal device, the external
unit and earth
●
Cooling and heating LEDs illumi-
nate together
∘
Only the heating LED illuminates
Diagnosis
(cont.)
19
Troubleshooting
5692
687
GB
Содержание Vitoclima 300-S
Страница 40: ...Type OS307H A Control PCB B Power supply PCB External units cont 40 Connection and wiring diagrams 5692 687 GB ...
Страница 54: ...54 5692 687 GB ...
Страница 55: ...55 5692 687 GB ...