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9
Troubleshooting
Any malfunctions that cannot be removed by means of the measures
described in this chapter may only be repaired by the manufacturer or by
qualified persons.
Problem
Yellow LEDs do not
respond when the
probe(s) change(s) its/
their state
PTC thermistor(s) of the
probe(s) is/are polluted
(deposits)
Green LED and the
relay do not switch as
described in chapter
"Operating mode".
Other malfunctions
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Decommissioning, disposal
Dispose of the product in compliance with all applicable directives, standards
and safety regulations.
Electronic components must not be disposed of together with the normal
household waste.
Troubleshooting
Possible reason
No mains voltage avail-
able
Mains fuse defective
Incorrect wiring
Probe(s) defective
-
Operating mode not cor-
rectly set
Incorrect wiring
Probes interchanged
Control unit defective
-
1. Disconnect the product from mains.
2. Dismount the product (see chapter "Mounting", reverse
sequence of steps).
3. Dispose of the product.
Repair
Verify proper mains volt-
age supply
Replace the mains fuse,
see
chapter "Maintenance
activities".
Verify correct wiring
Check the probe(s)
Replace the probe(s)
Check the operating
mode
Verify correct wiring
Check the probes
Replace the control unit
Contact the AFRISO
service hotline
RG 210
EN
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