Buderus Logano plus GB312 Installation Manual page 85

Type Display
1)
code Fault code Cause
V CY 573
V CY 574
V LP 570
Tab. 17 Fault messages
1) V = locking; B = inhibiting; BC = operating code
Logano plus GB312 - Technical specifications are subject to change without prior notice
Description
Flow temperature Control unit is
receiving implausi-
< 23 °F (< -5 °C) (cir-
ble signals from
cuit break)
flow temperature
sensor.
Flow temperature Control unit is
receiving implausi-
>266°F (>130°C)
ble signals from
(short circuit)
flow temperature
sensor.
Too many resets via Too many resets
the interface. have been received
via the interface
within a certain
period.
Important: this fault
can only be reset
by the button on
the SAFe.
Troubleshooting
Testing
sequence/Cause Action
Check connecting Replace connect-
lead between SAFe ing lead if neces-
and return sensor. sary
Check electrical Rectify any contact
connection of con- problems
necting lead to
Replace tempera-
SAFe.
ture sensor if nec-
Check resistance essary
levels of tempera-
If temperature sen-
ture sensor against
sor resistances are
table
correct but volt-
Check voltage at ages incorrect,
temperature sensor replace SAFe
terminals on SAFe
against table
Check connecting Replace connect-
lead between SAFe ing lead if neces-
and return sensor. sary
Check electrical Rectify any contact
connection of con- problems
necting lead to
Replace tempera-
SAFe.
ture sensor if nec-
Check resistance essary
levels of tempera-
If temperature sen-
ture sensor against
sor resistances are
table
correct but volt-
Check voltage at ages incorrect,
temperature sensor replace SAFe
terminals on SAFe
against table
Faults have continu- Identify and elimi-
ally been simply nate the cause of
reset and not recti- the problem caus-
fied. ing the resets.
There is a fault on Replace BC10.
the BC10 causing
Replace SAFe.
continual resets.
There is a malfunc-
tion on the SAFe.
10
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