Eco-King HWB-299, Installation And Service Manual

Page: 92 / 124

E93.1801EN171 HWB installation manual 92
Lock-
out
code
Error Description Cause Solving
155 WD_CON-
FIG_ERROR
Watchdog fan configuration
setting error wrongly program-
med BCU or PB reset BCU or replace BCU
and or display unit
162 FILL_WARNING Error is generated immedi-
ately when the pressure
drops below Minimal_Pres-
sure. Demand has stopped,
but no error needs to be
stored at this time. The water pres-
sure is below the
minimum pres-
sure level refill the system until the
pressure is above 1 Bar or
14.5 PSI
164 LOWEX-
FLOW_PRO-
TECTION
Flow is too low, demand
needs to be stopped with
fan at ignition speed*, but
no error needed to be
stored at this time not enough water
flow through heat
exchanger Check functioning of the
pump. Check/open all
valves that might restrict
the water flow through the
unit.
Check for an external sys-
tem pump that influences
flow through the unit.
Check if the system re-
sistance exceeds the spare
capacity of the unit pump.
165 VSUP-
PLY_TOO_LOW
Main supply voltage too low
for more than 60 seconds dip in power sup-
ply to boiler check power supply
166 VSUP-
PLY_TOO_HIGH
Main supply voltage too
high for more than 60 sec-
onds peak in power
supply to boiler check power supply
Warnings
Error no. Error Description Cause Solving
200 CC_LOSS_COM-
MUNICATION
Cascade System: Managing
cascade control lost com-
munication with one of the
depending.
connection be-
tween cascaded
boilers is inter-
rupted or wiring is
broken
Check wiring between
boiler or distance between
boilers is to big
202 APP_SELEC-
TION_ERROR
Unknown appliance model
selected
wrongly pro-
grammed parame-
ters
replace BCU
203 CC_LOSS_BOILER
_COMM
Dual Cascade System: Man-
aging cascade control lost
communication with one of
the depending.
connection be-
tween cascaded
boilers is inter-
rupted or wiring is
broken
Check wiring between
boiler or distance between
boilers is to big
204 T_OUTDOOR_
WRONG
T_Outdoor sensor measures
open/shorted
malfunctioning
outdoor sensor or
not connected or
wrong CH-mode
programmed
check connection to BCU or
check resistance NTC sensor
or change CH-mode
205 T_SYS-
TEM_WRONG
T_System sensor measures
open/shorted
malfunctioning
system sensor or
not connected
check connection to BCU or
check resistance NTC sensor
206 T_CAS-
CADE_WRONG
T_Cascade sensor measures
open/shorted
malfunctioning
cascade sensor or
not connected
check connection to BCU or
check resistance NTC sensor