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

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116
E93.1901EN032 Installation and Service Manual SlantFin VGH-CH / CO
Blocking codes
Block-
ing
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_
REGISTER Internal software error wrongly program-med
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_Period. not enough waterflow
overheat exchanger check functioning of the
circulator.
check/open all valves that
might restrict the water
flow through the unit.
check for external system
circulator that influences
flow through the unit.
check if system resistance
exceeds the spare
capacity of unit circulator.
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_HI
GH Internal hardware error wrongly programmed
BCU or PB
reset BCU or replace BCU
and or display unit
113 REFLO2_TOO_LO
W 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_PR
ESSURE_
SENSOR Low water pressure,
occurs when the
pressure drops below
Minimal_Pressure, or
when the pressure
drops below 11.6 psi. not enough water
pressure fill up the system and
check if there are any
water leakages
118 WD_COMM_
ERROR Watchdog
communication error wrong programmed
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 malfunctioning DHW
sensor or not
connected check connection to BCU
or check resistance NTC
sensor