128
Dis-
played
fault
code
Const.
Weath.-
comp.
System char-
acteristics
Cause
Measures
E0
X
Control mode
Fault external
LON sub-
scriber
Check connections
and LON subscrib-
ers.
E1
X
X
Burner in a fault
state
Ionisation
current too
high during
calibration
Check gap be-
tween ionisation
electrode and
burner gauze as-
sembly (see
page 46).
In open flue mode,
prevent very dusty
conditions for the
combustion air.
Press reset button
R
.
E2
X
X
Burner in a fault
state
Heating water
flow rate too
low during
calibration.
Flow limiter
caused shut-
down.
Ensure adequate
circulation volume.
Check flow limiter.
Remove scaling,
blockage.
Press reset button
R
.
E3
X
X
Burner in a fault
state
Heat transfer
too low during
calibration.
Temperature
limiter caused
shutdown.
Ensure adequate
heat transfer.
Press reset button
R
.
E4
X
X
Burner blocked Fault, supply
voltage 24 V
Replace control
unit.
E5
X
X
Burner blocked Fault, flame
amplifier
Replace control
unit.
Troubleshooting
Fault codes
(cont.)
5623 520 GB
Содержание Series B2HA 40
Страница 16: ...16 3 2 2x 1 4 4x 5 Installation sequence Opening the control unit casing cont 5623 520 GB ...
Страница 172: ...172 0002 0001 0003 0005 0004 Parts lists Miscellaneous cont 5623 520 GB ...
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Страница 179: ...179 5623 520 GB ...