E93.1803.901 HW
98
Lockout codes
Lock-
out
code
Error
Description
Cause
Solving
0
E2PROM_READ_ER
ROR
Internal software error
wrongly programmed BCU
or PB
reset BCU or replace BCU and or
display unit
1
IGNIT_ERROR
Five unsuccessful ignition
attempts in a row
no gas, wrongly adjusted
gas valve
check gas supply and adjust gas
valve, reset BCU
2
GV_RELAY_
ERROR
Failure detected in the gas
valve relay
short circuit in coil of the gas
valve, water on wiring or gas
valve
reset BCU replace gas valve or wir-
ing harness
3
SAFETY_RE-
LAY_ERROR
Failure detected in safety re-
lay
safety relay is not working
correctly
reset BCU or replace BCU
4
BLOCKING_
TOO_LONG
Control had a blocking error
for more than 20 hours
blocking code active for
more than 20 hours
reset and check blocking code
5
FAN_ERROR_
NOT_RUNNING
Fan is not running for more
than 60 seconds
electrical wiring not correctly
connected, or Fan is mal-
functioning
Check wiring or replace Fan if not
solved check fuse on BCU or re-
place BCU
6
FAN_ERROR_
TOO_SLOW
Fan runs too slow for more
than 60 seconds
electrical wiring not correctly
connected, or Fan is mal-
functioning
Check wiring or replace Fan if not
solved check fuse on BCU or re-
place BCU
7
FAN_ERROR_
TOO_FAST
Fan runs too fast for more
than 60 seconds
electrical wiring not correctly
connected, or Fan is mal-
functioning
Check wiring or replace Fan if not
solved check fuse on BCU or re-
place BCU
8
RAM_ERROR
Internal software error
wrongly programmed BCU
or PB
reset BCU or replace BCU and or
display unit
9
WRONG_EEPROM_
SIGNATURE
Contents of E2prom is not
up to date
out dated E2prom
reset BCU or replace BCU
10
E2PROM_
ERROR
Wrong safety parameters in
E2prom
wrongly programmed BCU
or PB
reset BCU or replace BCU
11
STATE_ERROR
Internal software error
wrongly programmed BCU
or PB
reset BCU or replace BCU
12
ROM_ERROR
Internal software error
wrongly programmed BCU
or PB
reset BCU or replace BCU
13
APS_NOT_
OPEN
Air pressure switch not
opening during pre-purge 0
electrical circuit is short cir-
cuited or APS is jammed
check wiring or replace APS
14
APS_NOT_CLOSED
_IN_PRE_ PURGE
Air pressure switch not clos-
ing during pre-purge 1
no air transport to the
burner; flue or air inlet is
blocked or APS is jammed
or air signal hose not con-
nected 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.
15
MAX_TEMP_
ER-
ROR
The external overheat pro-
tection is enabled or the
T_Supply sensor measures
a temp. of over Prot_Over-
heat_Temp - SGOver-
heat_Duplex_Tolerance for
a period of Max_Value_Pe-
riod
Burner door clixon tripped
because of overheating of
the burner door or the water
flow is restricted or back wall
thermal fuse has tripped be-
cause rear wall insulation
disc (combustion chamber)
is damaged or broken.
Check burner door gasket and re-
place burner door gasket and reset
clixon on burner door or check pump
and waterflow and replace pump or
increase water flow check also if
valves are closed or check if rear
wall fuse is broken if so replace and
also replace rear wall insulation disc
(combustion chamber).
16
FLUE_GAS_ ER-
ROR
Flue temperature exceeded
the maximum flue tempera-
ture
There is no water in the heat
exchanger or flue gas sen-
sor is malfunctioning or heat
exchanger is overheated.
Check if flue sensor is working cor-
rectly 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
Содержание CB 105 HW
Страница 69: ...E93 1803 901 HW 70 12 6 Electrical schematic...
Страница 70: ...E93 1803 901 HW 71...
Страница 71: ...E93 1803 901 HW 72 12 7 Ladder Logic Diagram LOW MAINS VOLTAGE VOLTAGE...
Страница 127: ...E93 1803 901 HW 128 22 SPARE PARTS CB 85 HW CB 105 HW and CB 125 HW exploded view...
Страница 128: ...E93 1803 901 HW 129...
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Страница 130: ...E93 1803 901 HW 131...
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