DeDietrich 24 Installation And Service Manual page 204

en
11 Troubleshooting
DISPLAY
DESCRIPTION OF TEMPORARY FAULTS
Group Specific
code code
H.01 .08 Flow temperature increase in heating mode too quick.
H.01 .14 Maximum flow or return temperature value reached.
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 correct­
H.02 .03
ly.
H.02 .04 PCB settings cannot be read.
Setting memory not compatible with the boiler PCB
H.02 .05
type.
H.02 .07 Low pressure in heating circuit (water filling required).
Partial stoppage of the boiler (antifreeze function ac­
H.02 .09
tive)
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
204 INIDENS
CAUSE – Check/Solution
An installer is required for most checks and solu­
tions.
INSUFFICIENT CIRCULATION
Check the boiler/installation circulation
Activate a manual venting cycle
Check the installation pressure
Check the operation of the pump
OTHER CAUSES
Check the cleanliness of the exchanger
Check the operation of the temperature sensors
Check the temperature sensor connection
INSUFFICIENT CIRCULATION
Check the boiler/installation circulation
Activate a manual venting cycle
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 a qualified professional
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 a qualified professional
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
7804841 - 02 - 20012022