Buderus GB402-320-5, Инструкции по установке и обслуживанию для подрядчиков

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11 Troubleshooting
Logano plus GB402 – 6 720 820 700 (2018/01) 53
V CY 573 Supply
temperature
< -5 °C
(interruption)
The control unit
receives unrealistic
values from the flow
temperature sensor. Check cabling between SAFe and
flow temperature sensor. Replace cable if required.
Check electrical connection of the
SAFe cable. Remedy contact problem if
required.
Check the resistance values of the
temperature sensor against the
table. Replace temperature sensor if
required.
Check voltage at the temperature
sensor terminals inside the SAFe
according to table. Replace SAFe if resistance
values of the temperature
sensor are correct, but voltage
values are incorrect.
V CY 574 Supply
temperature
> 130 °C (short
circuit)
The control unit
receives unrealistic
values from the flow
temperature sensor. Check cabling between SAFe and
flow temperature sensor. Replace cable if required.
Check electrical connection of the
SAFe cable. Remedy contact problem if
required.
Check the resistance values of the
temperature sensor against the
table. Replace temperature sensor if
required.
Check voltage at the temperature
sensor terminals inside the SAFe
according to table. Replace SAFe if resistance
values of the temperature
sensor are correct, but voltage
values are incorrect.
V LP 570 Too many resets
via the interface. Too many resets were
carried out via the
interface within a
certain period.
Please note: this fault
can only be reset via
the button on the SAFe.
Faults present have been
repeatedly reset but not
eliminated. Identify the cause of the faults,
which have resulted in the
resets, and eliminate them.
The BC10 has developed a fault,
which is causing constant resets. Replace the BC10.
The SAFe has developed a fault. Replace the SAFe.
Type
1)
Display code Fault Code Reason Description: Test procedure/cause Corrective measure
Table 23 Fault displays
1) V = locking; B = blocking