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Sorel SLC Plus Manual

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Malfunctions/Maintenance
Replacing the Fuse
Repairs and maintenance may only be performed by a specialist. Before working on the unit, switch off the power supply and
secure it against being switched on again! Check that there is no power flowing!
Only use the supplied spare fuse or a fuse of the same design with the following specifications: 2 AT/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 find 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 first 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:
lCheck the date and time See "Time & Date" on page 19
lAssess/check plausibility of statistics See "Statistics" on page 11
lCheck the error memory See "Message Log" on page 11
lVerify/check plausibility of the current measurement values See "Measurement values" on page 11
lCheck the switch outputs/consumers in manual mode See "Manual" on page 12
lPossible optimization of the parameters setting (only on customers request)
Possible error messages
Possible error messages Notes for the specialist
Sensor x defective Means that either the sensor, sensor entrance on the controller or the connecting wire was defective
(See "Temperature Resistance Table for Pt1000 Sensors" on page 9).
Restart Means that the controller was restarted, for example, due to a power outage. Check date & time!
Time & Date This display appears automatically after a longer network disruption, because the time & date must
be examined and, if applicable, adjusted.
Frequent on / off A relay was switched on and off more than 5 times within 5 minutes.
AL failed Anti-legionella failed appears if at least anti-legionella Tsoll -5 °C could not be held at the anti-legion-
ella sensor for the set exposure time.
Tips
The service values include not only current measurement values and operating states, but also all of the settings for the con-
troller. Write the service values down just once after commissioning has been successfully completed.
In the event of uncertainty as to the control response or malfunctions the service values are a proven and successful method for
remote diagnosis. Write the service values down at the time that the suspected malfunction occurs. Send the service value table
by fax or e-mail with a brief description of the error to the specialist or manufacturer.
To protect against loss of data, record any statistics and data of particular importance at regular intervals.
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