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Troubleshooting
Control unit diagnostics
LED
LED indicator
Defrosting
Flashes
ON
OFF
Central heating
ON
OFF
Cooling
ON
OFF
Reports
Internal faults are captured and dis-
played by the unit.
Scanning messages
Press the following keys:
1.
simultaneously and
briefly (< 2 s); the dis-
play shows "SET".
2.
until the display shows
"Err".
3.
simultaneously and
briefly; the display
shows the first message.
Note
If there is no message the display
shows "
".
Deleting messages
In the standard display, briefly (< 2 s)
press
.
24
(cont.)
Operating condition
Defrost demand active
Defrost active
No defrost
Heating mode
Cooling mode or "Standby" mode
Cooling mode
Heating mode or "Standby" mode
If there is a fault, the display shows
the corresponding code (see table
from page 25) alternating with the
return temperature.
4.
5.
6.
to display any other mes-
sages that may be cur-
rent.
simultaneously and for at
least 5 s to reach the
next higher menu level.
simultaneously and for at
least 5 s to return to the
standard display.
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