Warnings - Slant/Fin VGH-299-CH Installation And Service Manual

Lockout Error
code
155 WD_CONFIG_E
RROR
162 FILL_WARNING
164 LOWEXFLOW_
PROTECTION
165 VSUPPLY_TOO
_LOW
166 VSUPPLY_TOO
_HIGH
Table 14. 2

Warnings

Error no. Error
200 CC_LOSS_COM
MUNICATION
202 APP_SELECTIO
N_ERROR
203 CC_LOSS_BOIL
ER_COMM
204 T_OUTDOOR_
WRONG
205 T_SYSTEM_WR
ONG
206 T_CASCADE_W
RONG
Table 14. 3
92
Description
Watchdog fan configuration
setting error
Error is generated
immediately when the
pressure drops below
Minimal_Pressure. Demand
has stopped, but no error
needs to be stored at this
time.
Flow is too low, demand
needs to be stopped with
fan at ignition speed*, but
no error needed to be
stored at this time
Main supply voltage too low
for more than 60 seconds
Main supply voltage too
high for more than 60
seconds
Description
Cascade System: Managing
cascade control lost
communication with one of
the depending.
Unknown appliance model
selected
Dual Cascade System:
Managing cascade control
lost communication with one
of the depending.
T_Outdoor sensor measures
open/shorted
T_System sensor measures
open/shorted
T_Cascade sensor
measures open/shorted
E93.1601EN032.C VGH installation manual
Cause Solving
wrongly program- reset BCU or replace BCU
med BCU or PB and or display unit
The water refill the system until the
pressure is below pressure is above 1 Bar or
the minimum 14.5 PSI
pressure level
not enough water Check functioning of the
flow through heat circulator. Check/open all
exchanger valves that might restrict
the water flow through the
unit.
Check for an external
system circulator that
influences flow through the
unit.
Check if the system
resistance exceeds the
spare capacity of the unit
circulator.
dip in power check power supply
supply to boiler
peak in power check power supply
supply to boiler
Cause Solving
connection Check wiring between boiler
between cascaded or distance between boilers
boilers is is to big
interrupted or
wiring is broken
wrongly replace BCU
programmed
parameters
connection Check wiring between boiler
between cascaded or distance between boilers
boilers is is to big
interrupted or
wiring is broken
malfunctioning check connection to BCU or
outdoor sensor or check resistance NTC
not connected or sensor or change CH-mode
wrong CH-mode
programmed
malfunctioning check connection to BCU or
system sensor or check resistance NTC
not connected sensor
malfunctioning check connection to BCU or
cascade sensor or check resistance NTC
sensor
not connected