Slant/Fin VHG-100-CH, Installation And Service Manual

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E93.1901EN032 Installation and Service Manual SlantFin VGH-CH / CO
115
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out
code Error Description Cause Solving
16 FLUE_GAS_
ERROR Flue temperature
exceeded the maximum
flue temperature there is no water in
the heat exchanger
or flue gas sensor is
malfunctioning or
heat exchanger is
overheated. check if flue sensor is
working correctly if not so
replace flue sensor. Check
waterflow if to low increase
waterflow.
17 STACK_ERROR Internal software error wrongly programmed
BCU or PB reset BCU or replace BCU
and or display unit
18 INSTRUCTION_
ERROR Internal software error wrongly programmed
BCU or PB reset BCU or replace BCU
and or display unit
19 ION_CHECK_
FAILED Internal software error wrongly programmed
BCU or PB reset BCU or replace BCU
and or display unit
20 FLAME_OUT_
TOO_LATE Flame still present 10 sec.
after closing the gas valve wrong earthing of
BCU and boiler check earthing of BCU and
boiler
21 FLAME_
BEFORE_IGNIT Flame is detected before
ignition wrong earthing of
BCU and boiler check earthing of BCU and
boiler
22 TOO_MANY_
FLAME_LOSS Three times flame lost
during 1 demand bad gas supply or
CO
2
level is not
correct or bad
ignition rod
check gas supply pressure,
check CO
2
level and adjust
if necessary, replace igni-
tion rod or replace ignition
cable.
23 CORRUPTED_
ERROR_NR Error code RAM byte was
corrupted to an unknown
error code. wrongly programmed
BCU or PB reset BCU or replace BCU
and or display unit
27 FILLING_TOO_
MUCH Too many automated
filling attempts in a short
time period if output is
programmed as filing
valve and there are
too many filing
attempts check if there is a leak in
the central heating system
or if the boiler itself is
leaking also check
expansion vessel on
internal leak
28 FILL_TIME_
ERROR Filling takes too long if output is
programmed as filing
valve and filling takes
more than 10
minutes check if there is a leak in the
central heating system or if
the boiler itself is leaking
also check expansion
vessel on internal leak
29 PSM_ERROR Internal software error wrongly programmed
BCU or PB reset BCU or replace BCU
and or display unit
30 REGISTER_
ERROR Internal software error wrongly programmed
BCU or PB reset BCU or replace BCU
and or display unit
32 T_EXCHANGE_
DIFF_ERROR The 2 exchange sensors
deviate too much for more
than 60 seconds there is not enough
water flow through
the heat exchanger check if the general pump is
running and if all valves are
open to make enough flow
33 LWCO_1_
ERROR Low water cut off 1 error there is no water in
the heat exchanger
or not electrically
connected check if there is enough
water in the heat exchanger
if not: fill up the system
34 LWCO_2_
ERROR Low water cut off 2 error there is no water in
the heat exchanger
or not electrically
connected check if there is enough
water in the heat exchanger
if not: fill up the system
35 APS_NOT_
CLOSED_IN_
POST_PURGE Air pressure switch not
closing during post-purge
1 no air transport to the
burner after heating
de-mand; flue or air
inlet is blocked or
APS is jammed or air
signal hose not
connected to the air
intake pipe or water in
hose check if there are any
obstructions in the flue or
air intake, replace APS if
jammed, connect air hose
to the air intake pipe,
remove any water from the
hose.
Table 13.1