CHWS PRORAPID - Page 29

29
INSTALLATION MANUAL PRORAPID |
Malfunctions/Maintenance
Replacing the Fuse
Repairs and maintenance
may only be performed by
a specialist. Before working
on the unit, switch o the
power supply and secure it
against being switched on
again! Check that there is no
power owing!
Only use the included
safeguard or a similar
safeguard with the following
specications: T2A / 250 V.
If the mains voltage is switched on and the
controller still does not function or display
anything, then the internal device fuse may
be defective. First nd the external fault
source (e.g. pump), replace it and then
check the device fuse.
To replace the device fuse, open the device
as described under “See “ Wall Installation “
on page 8”, remove the old fuse, check it
and replace if necessary.
Then rst recommission the controller and
check the function of the switch outputs in
manual mode as described in Section 3.2. .
Maintenance
!
In the course of the general
annual maintenance of
your heating system, the
functions of the controller
should also checked by a
specialist and the settings
should be optimized if
necessary.
Performing maintenance:
• Check the date and time See “ Time &
Date “ on page 18
• Assess/check plausibility of statistics
See “ Statistics “ on page 11
• Check the error memory See “
Notications “ on page 11
• Verify/check plausibility of the
current measurement values See “
Measurement values “ on page 10
• Check the switch outputs/consumers
in manual mode See “ Manual “ on
page 12
• Possible optimization of the parameters
setting (only on customers request)