Baxi Ecogen 24/1.0 Installation & Servicing Instructions Manual page 76

Fig. 80
page 76
17.3 Error Codes
Below are shown the error codes which will be displayed on the THINK Controller if a fault occurs on the appliance. Error Codes shown on remote interfaces may be collective
codes ­ refer to the THINK Controller for the exact error message. More than one error may be present so that subsequent error codes will be shown as the original error is reset.
The occurrence of an error code will prevent some or all of the operations of the appliance.
Error codes specific to the running of the engine will not prevent the supplementary burner from operating and visa verse.
There are three levels of error code with associated reset procedures as follows: ­
1. Automatic reset ­ (AR) Examples are mainly to do with temperature sensing but also include monitoring of the mains supply. Automatic reset only occurs if the fault
condition is eliminated.
2. User reset ­ (UR) An example would be the restoration of the gas supply to enable ignition.
3. Service reset ­ (SR) arises when a reset of the condition needs to be accompanied by the attendance of a service engineer.
There are two special conditions: ­
1. Automatic reset after power down ­ (ARP) an automatic reset can only occur after the electrical supply is interrupted. Usually this implies data corruption and is in effect
a 'reboot' of the PCB.
2. No restart possible ­ (NRP) occurs if there is corruption of stored data for instance and implies that the PCB will have to be replaced.
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17.4 List of Error Codes
In the table below: ­ PCB = Main Control Board, BCU = Burner Control Unit.
Error code: Description
Display
10: Outside Fault outside temp sensor
sensor
20: Boiler Fault boiler flow temp sensor
sensor 1
40: Return Fault return temp sensor boiler
sensor 1
50: DHW tank Fault DHW1 sensor
sensor
60: Room Fault room temp sensor HC1
sensor 1
65: Room Fault room temp sensor HC2
sensor 2
83: BSB short­ Boiler system bus short­circuit
circuit
84: BSB More then 1 room units are assigned to the same HC Assign one of them to HC2 or
address assign QAA7x not as room unit
collision
85: Radio Communication to radio device interrupted
communication
91: Data loss Failure in Class B­SW: Irreparable data loss in EEPROM
in EEPROM
92: Device RAM failure, HBC processor register failure, blocking chain undefined (toggling), safety
electronics chain discrepancy. Reset: Press Service Reset within 20 seconds after Power up
error
95: Time of The real time clock unit detected corrupted time of day.
day invalid
96: Minor SW Failure in Class B­SW: Stack overflow or program sequence failure
failure
97: SW or HW Failure in EGC­SW which causes non­volatile lock.
failure
102: Clock The charging of the clock backup ran out
without backup
114: Shut'd Shutdown due to flue gas thermostat of safety chain
flue gas
Lockout/Reset Fault
action Section
Eng Sup
AR AR B
AR AR C
AR AR C
AR AR B
AR AR B
AR AR B
AR AR B
ARP ARP B
AR AR B
NRP NRP B
NRP NRP B
B
AR AR B
NRP NRP B
AR AR B
SR SR D