Rotex GasSolarUnit Series User Manual

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Fault code Description Type of fault Comments
10-0 Outside sensor Cable break
10-1 Outside sensor Short circuit
12-0 Mixer circuit flow sensor Cable break Mixer circuit pump will be switched OFF;
the mixer motor goes to zero volt
12-1 Mixer circuit flow sensor Short circuit Mixer circuit pump will be switched OFF;
the mixer motor goes to zero volt
13-0 DHW cylinder sensor break
13-1 DHW cylinder sensor short circuit
14-7 Modem contact Fault indication
15-7 Burner blocking contact Fault indication
16-0 Flue gas sensor Cable break
16-1 Flue gas sensor Short circuit
16-7 Flue gas sensor Fault indication
30-2 Burner No shutdown
30-3 Burner No start
33-5 Flue gas temperature Exceeded
70-0 Address Address conflict
70-1 Activity No T2B signal
70-6 Communication between the THETA
and the burner control unit CVBC Cable break
71-0 EEPROM Internal error
71-1 EEPROM faulty Internal error
E 01 Burner control unit CVBC Interlocking fault No flame recognised within the 5 possible starting
attempts
E 02 Burner control unit CVBC Interlocking fault Incorrect flame signal – ionisation current outside
the permissible range
E 03 Burner control unit CVBC Interlocking fault high limit safety cut-out fault — excessive
flow temperature
E 05 Burner control unit CVBC Interlocking fault No speed signal from the burner fan
within 10 seconds
E 08 Burner control unit CVBC Interlocking fault Fault in the flame monitoring routine
E 10 Burner control unit CVBC Interlocking fault EEPROM communication error
E 11 Burner control unit CVBC Interlocking fault Faulty sensor adjustment procedure for the
electronic high limit safety cut-out function or return
temperature longer than 3 minutes more than 3K
higher than the flow temperature
E 19 Burner control unit CVBC Interlocking fault Micro-processor H – I/O error
E 20 Burner control unit CVBC Interlocking fault Micro-processor L – I/O error
E 21 Burner control unit CVBC Interlocking fault Micro-processor H – A-D converter error
E 22 Burner control unit CVBC Interlocking fault Micro-processor L – A-D converter error
E 25 Burner control unit CVBC Interlocking fault Internal error
E 26 Burner control unit CVBC Interlocking fault Five times flame tear-off within 4 minutes
B 09 Burner control unit Temporary fault Fault during the gas valve checking routine
B 30 Burner control unit Temporary fault Flow sensor short circuit
B 31 Burner control unit Temporary fault Flow sensor break
B 34 Burner control unit Temporary fault Voltage too low (<185 V)
B 35 Burner control unit Temporary fault Fluctuating mains frequency (in excess of ± 2 Hz)
B 37 Burner control unit Temporary fault Internal error
B 43 Burner control unit Temporary fault Return sensor short circuit
B 44 Burner control unit Temporary fault Return sensor break
B 99 Burner control unit Temporary fault Internal communication between THETA
and CVBC interrupted
Table 7.1: List of possible fault codes

Rotex GasSolarUnit Series Specifications

General

Brand	Rotex
Model	GasSolarUnit Series
Category	Boiler
Language	English