Installation and Operating Instructions
BDC 102
1328BED001-10B-E
Status 01/07
- 11 -
Fault indication
Possible causes
Action
Flashes once
•
Interruption in the
cable to the collector
sensor
•
Sensor defective
Check cables
Check sensor resistance value,
replace sensor if necessary
Flashes twice
•
Short circuit in the
cable to the collector
sensor
•
Sensor defective
Check cables
Check sensor resistance value,
replace if necessary
Flashes three times
•
Interruption to the
cable to the storage
cylinder sensor
•
Sensor defective
Check cables
Check sensor resistance value,
replace sensor if necessary
Flashes four times
•
Short circuit in the
cable to the storage
cylinder sensor
•
Sensor defective
Check cables
Check sensor resistance value,
replace if necessary
Light permanently on
No circulation:
•
Air in the system
•
Error in pump
connection
•
Pump defective
•
Pump has seized
Installation protection
De-aerate the system
Check the pump connection
Replace the pump
Ensure the pump is running
Collector temperature >= 120°C, wait
until the temperature has fallen below
105°C
10.2 Faults that are not indicated
Faults and errors that are not displayed can
be tested using the following table and
possible causes and sources of error
identified. If, based on the description, fault
rectification is not possible, please contact
the supplier or installer of the system.
Error
Possible causes
Action
No display function
•
No 230V power supply
Switch on or connect the control unit
Check domestic fuse box for
connection
•
Fuse within device is
defective
Test fuse, replace with new, type
2A/F fuse if necessary.
Test 230V components for short
circuit
•
Device defective
Contact the supplier
Green LED “pump” light
blinks, but pump does not
work
•
Connection to pump
interrupted.
•
Pump has seized.
•
No power supply to
switching output.
Test cable to pump
Ensure the pump is running
Control unit defective. Contact
supplier.
