S
ERVICE
C
OMFORT
C
IRCLE
52
8
. . Service
8.1
Safety instructions
Danger:
d
Service work on the unit may be performed by
qualified technical staff only.
Danger:
d
Before opening the unit, follow the safety instruc-
tions in section 1.4.
8.2
Service menu
In the service menu, you can read values that provide informa-
tion on the operation of the unit
•
Press the
?
key and the
|
key simultaneously.
•
To browse through the menu, press the
?
key.
•
To exit the menu, press the
=
key.
8.3
Resetting and reconfiguring the controller
In some situations it may be necessary to reset and reconfig-
ure the controller. Use this function:
•
to remedy fault E1 or E2 (see section 7-3);
•
after replacing a PCB (see section 8.10);
•
after removing or replacing a connected unit.
To reset and reconfigure:
•
press
+
and
-
simultaneously.
The controller will then search again for connected units (see
table 8-1, function 20). Next, you return to the user level.
