Immergas EOLO STAR 24 4E Instructions And Warnings page 33

Error
Anomaly signalled
Code
Low power supply
37
voltage
38 Loss of flame signal
Block due to loss of
43
flame signal
Block for exceeding
the maximum ope-
44
nings close to the gas
valve
Supply voltage fre-
59
quency anomaly
Failure signalled of
the gas valve modula-
80
tor pilot circuit
Block - maximum no.
98
of software errors
(1) If the shutdown or fault persists, contact an authorised company (e.g. Technical After-Sales Service).
Cause
This occurs when the power supply voltage is
lower than the allowed limits for the correct boiler
operation.
This occurs when the boiler is ignited correctly and
the burner flame switches off unexpectedly; a new
attempt at ignition is performed and if normal condi-
tions are restored, the boiler does not have to be reset.
This occurs if the ''Flame signal loss (38)'' error occurs
many times in a row within a preset period.
This occurs if the gas valve remains open for longer
than required for normal operation, without
the boiler switching on.
The board detects a main supply voltage frequency
anomaly.
Possible failure to the gas valve modulator or electro-
nic board, cut-off wiring. The boiler operates to the
minimum DHW output.
The maximum number of software errors possible has
been reached.
Boiler status / Solution
If normal conditions are restored the boiler restarts
without having to be reset (1).
(1).
Press the Reset button (1).
Press the Reset button (1).
The boiler does not start (1).
Check the wiring connection and modulator coil
continuity (1).
Press the Reset button (1).
33