Slant/Fin VHG-100-CH Installation And Service Manual page 115

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