Siemens Water Heater SINVERT 350 Manuel D’Utilisation
Alarm and fault messages
4.2 Alarm and fault messages
4.2 Alarm and fault messages
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Table 4-16 Fault 63
(Alarm) Direct current too high
Condition
The CU / S7 has detected a direct current in excess of
the set permissible limit
the set permissible limit
Parameter setting error (S7 software)
Parameter setting error (CU software)
Open circuit (detected by the S7 and indicated by this
fault code)
Parameter setting error (CU software)
Open circuit (detected by the S7 and indicated by this
fault code)
Causes
Isolation amplifier is incorrectly set
Adjust the parameter settings
Repair the cabling
Adjust the parameter settings
Repair the cabling
Measures
Set the isolation amplifier correctly
Table 4-17 Fault 64
(Alarm) Vdc or dVdc/dt too high
Condition
The CU has detected a DC voltage or an abrupt change
in the DC voltage in excess of the permissible maximum
value
Parameter setting error
in the DC voltage in excess of the permissible maximum
value
Parameter setting error
Causes
Connected DC voltage is too high
Adjust the parameter settings
Replace the power pack
Check the connection and/or the cabling of the PV field
Adjust the parameter settings
Replace the power pack
Check the connection and/or the cabling of the PV field
Measures
Install a braking resistor
Table 4-18 Fault 65
(Alarm) No checkback signal from the AC or DC contactor
Condition
Signal is missing at the relevant S7 inputs
S7 relay output module defective
Incorrect setting in the S7
DC contactor is defective
AC contactor is defective
Fault in power supply
Incorrect setting in the S7
DC contactor is defective
AC contactor is defective
Fault in power supply
Causes
Wire break
Replace the S7 relay output module
Adjust the parameter setting
Replace the defective contactor
Repair the power supply
Replace the S7 relay output module
Adjust the parameter setting
Replace the defective contactor
Repair the power supply
Measures
Repair the cabling