40
Error code
Description
Alarm
b01
Failure of the boiler thermal element No. 1
Yes
b02
Failure of the boiler thermal element No. 2
Yes
b03
Failure of the boiler thermal element No. 3
Yes
b04
Failure of the boiler thermal element No. 4
Yes
b05
Failure of the boiler thermal element No. 5
Yes
b06
Failure of the boiler thermal element No. 6
Yes
b07
Failure of the boiler thermal element No. 7
Yes
E92
Failure of all boiler thermal elements
Yes
Possible Causes and Solutions
- Defective fan
- Power supply cable with phase/neutral reversed (the boiler is phase-sensitive, see par. 2.6.1)
- Safety thermostat is open: check the wiring and/or the thermostat.
Check if water circulation is sufficient.
- No ignition and/or ionisation:check if the gas supply is sufficient check the ignition and/or ionisation electrode
check the gas valve adjustment(see par. 3.5)
4.5 - ERROR CODES
ALARM means that the alarm signal is
on if a signal relay is connected to ter-
Error code
Description
Alarm
L1 4
Local Temperature NTC 1 in short circuit
no
L2 4
Local Temperature NTC 2 in short circuit
no
L3 4
Local Temperature NTC 3 in short circuit
no
L4 4
Local Temperature NTC 4 in short circuit
no
L5 4
Local Temperature NTC 5 in short circuit
no
L6 4
Local Temperature NTC 6 in short circuit
no
L7 4
Local Temperature NTC 7 in short circuit
no
L8 4
Local Temperature NTC 8 in short circuit
no
L1 3
Open Connector on the Local Temperature NTC 1
no
L2 3
Open Connector on the Local Temperature NTC 2
no
L3 3
Open Connector on the Local Temperature NTC 3
no
L4 3
Open Connector on the Local Temperature NTC 4
no
L5 3
Open Connector on the Local Temperature NTC 5
no
L6 3
Open Connector on the Local Temperature NTC 6
no
L7 3
Open Connector on the Local Temperature NTC 7
no
L8 3
Open Connector on the Local Temperature NTC 8
no
E31
Global Flow NTC in short circuit
no
E36
Global Flow NTC has an open connector (failure for other NTCs)
no
E32
Global Return NTC in short circuit
no
E37
Global Return NTC has an open contact
no
Possible Causes and Solutions
-
The Local Flow Temperature NTC of the component involved is defective
-
The Global Return Temperature NTC is defective
-
The water circulation through the thermal element involved is insufficient
minals 14-15 (tension free contacts).
When the display shows the error codes
Note:
The errors b 01÷07 shall foresee a specific programming to give an alarm-signal. See parameter J, 1
st
figure, par. 3.2.8.2.
Note: in the case of more NTC failures at the same time, the most important one prevails.
E.g.: “E” failures prevail on “L” failures; if “L” codes are equivalent, the code with the lowest first digit prevails; in the case that the
first digits are equivalent, the code with the highest second digit prevails.
Continuous
4.5.1 - ERROR CODES BY ALARM
4.5.2 - ERROR CODES RELATED TO LOCAL TEMPERATURES
listed in the table 4.5.1 here below, the
alarm signal can be coupled with them.
