Baxi 228 Combi 2 User Manual page 21

DISPLAY
DESCRIPTION OF TEMPORARY FAULTS
Group Specific
code code
H.01 .18 No water circulation (temporary).
Flow temperature increase during domestic hot water
H.01 .21
operation too fast.
H.02 .00 Reset in progress.
Waiting for configuration settings to be entered
H.02 .02
(CN1,CN2).
Configuration settings (CN1,CN2) not entered correc­
H.02 .03
tly.
H.02 .04 PCB settings cannot be read.
Setting memory not compatible with the boiler PCB ty­
H.02 .05
pe.
H.02 .07 Low pressure in heating circuit (water filling required).
Partial stoppage of the boiler (antifreeze function acti­
H.02 .09
ve)
Total stoppage of the boiler (antifreeze function not
H.02 .10
active)
H.02 .70 External unit heat recovery test failed
H.03 .00 No identification data for boiler safety device.
H.03 .02 Temporary flame loss
H.03 .05 Power supply voltage too low
Temporary flame loss
H.03 .54 Shutdown due to the power supply voltage being too
low
CAUSE – Check/Solution
An installer is required for most checks and solu­
tions.
INSUFFICIENT CIRCULATION
Check the installation pressure
Activate a manual venting cycle
Check the operation of the pump
Check the boiler/installation circulation
TEMPERATURE SENSOR ERROR
Check the operation of the temperature sensors
Check the temperature sensor connection
INSUFFICIENT CIRCULATION
Check the installation pressure
Activate a manual venting cycle
Check the operation of the pump
Check the boiler/installation circulation
TEMPERATURE SENSOR ERROR
Check the operation of the temperature sensors
Check the connection of the temperature sensors
It resolves itself
CN1/CN2 CONFIGURATION MISSING
Configure CN1/CN2
Check configuration CN1/CN2 Configure
CN1/CN2 correctly
MAIN PCB ERROR
Configure CN1/CN2
Replace the main PCB
Contact the Service Network
Check the installation pressure and restore
Check the expansion vessel pressure
Check for boiler/installation leaks
SIGNAL INDICATING BLOCKING INPUT
Contact X15 open, check connected devices
Parameter configuration error: Check AP001
SIGNAL INDICATING BLOCKING INPUT
Contact X15 open, check connected devices
Parameter configuration error: Check AP001
PCB accessory error SCB-09
Check the device connected to contact X9
MAIN PCB ERROR
Contact the Service Network
ELECTRODE PROBLEM
Check the electrode connection and wiring
Check the condition of the electrode
GAS SUPPLY
Check the gas supply pressure
Check the gas valve calibration
FLUE GAS PIPES
Check the pipes and the terminal
Check the mains voltage
ELECTRODE PROBLEM
Check the electrode electrical connections
Check the condition of the electrode
GAS SUPPLY
Check the gas inlet pressure
Check the gas valve calibration
FLUE GAS EXHAUST PIPE
Check the air intake and flue gas exhaust termi­
nal
Check the power supply voltage
8 Troubleshooting
200 Combi 2 21