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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

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.

Brand	Unical
Model	modulex 360
Category	Boiler
Language	English

Unical modulex 360 User Manual

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