38
738.955 | 10.40
EN
9
Maintenance
The controller was conceived for years of continuous
trouble-free operation. Nevertheless, faults may occur.
Maintenance may only be performed by professional
personnel.
The fault is usually not in the controller but rather in the
peripheral system components. The following descrip-
tion covers the most common problems encountered
with the controller.
Only send in the controller, with a precise fault
description, if none of the following faults are
present.
9.1
Causes
of
problems
WARNING
Risk
of
death
by
electrocution!
Disconnect the controller from the power supply
before opening the casing.
Controller
does
not
appear
to
function
at
all.
Secondary
symptoms Possible
cause
/
remedy
The controller dis-
play is blank
•
No power supply present
Have professional per-
sonnel check the fuse
and the supply cable.
Содержание TR A301
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