E93.1803.901 HW
100
Blocking codes
Lockout
code
Error
Description
Cause
Solving
100 WD_ERROR_RAM
Internal software error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
101 WD_ERROR_ROM
Internal software error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
102 WD_ERROR_STACK
Internal software error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
103 WD_ERROR_ REG-
ISTER
Internal software error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
104 WD_ERROR_XRL
Internal software error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
105 HIGH_TEMP_ERROR T_Supply sensor measures
over Stay_Burning_Temp for
a period of Max_Value_Pe-
riod.
not enough waterflow
over heat exchanger
Check functioning of the pump.
Check/open all valves that might re-
strict the water flow through the unit.
Check for an external system pump
that influences flow through the unit.
Check if the system resistance ex-
ceeds the spare capacity of the unit
pump.
106 REFHI_TOO_HIGH
Internal hardware error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
107 REFHI_TOO_LOW
Internal hardware error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
108 REFLO_TOO_HIGH
Internal hardware error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
109 REFLO_TOO_LOW
Internal hardware error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
110 REFHI2_TOO_HIGH
Internal hardware error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
111 REFHI2_TOO_LOW
Internal hardware error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
112 REFLO2_TOO_HIGH
Internal hardware error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
113 REFLO2_TOO_LOW
Internal hardware error
wrongly programmed
BCU or PB
reset BCU or replace BCU and or
display unit
114 FALSE_FLAME
Flame is detected in a state in
which no flame is allowed to
be seen
wrong earthing of BCU
and boiler
Check earthing of BCU and boiler
116 LOW_WATER_PRES-
SURE_SENSOR
Low water pressure, gener-
ated when the pressure drops
below Minimal_Pressure, or
when the pressure drops be-
low 0,3 bar .
Not enough water pres-
sure
Fill up the system and check if there
are any water leakages
118 WD_COMM_ERROR
Watchdog communication er-
ror
wrong
program-med
BCU or PB
reset BCU or replace BCU and or
display unit
119 RETURN_OPEN
Return sensor open
malfunctioning
return
sensor or not connected
check connection to BCU or check
resistance NTC sensor
120 SUPPLY_OPEN
Supply sensor open
malfunctioning supply
sensor or not connected
check connection to BCU or check
resistance NTC sensor
122 DHW_OPEN
DHW sensor open
Or
Cascade System: Depending
boilers parameter 35
“
DHW
Mode
”
not changed to 0
malfunctioning
DHW
sensor or not connected
check connection to BCU or check
resistance NTC sensor
OR
Modify parameter 35 (DHW Mode)
to 0 of depending boilers only
123 FLUE_OPEN
Flue sensor open
malfunctioning flue sen-
sor or not connected
check connection to BCU or check
resistance NTC sensor
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...
Страница 129: ...E93 1803 901 HW 130 CB 155 HW exploded view...
Страница 130: ...E93 1803 901 HW 131...
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