90
Lockout
code
Error
Description
Cause
Solving
116 LOW_WATER_P
RESSURE_SEN
SOR
Low water pressure,
generated when the
pressure drops below
Minimal Pressure, or when
the pressure drops below
0.3 bar (4.5 PSI)
Not enough water
pressure
Fill up the system and
check if there are any
water leakages
118 WD_COMM_ER
ROR
Watchdog communication
error
wrong program-
med PCB or PB
reset PCB or replace PCB
and or display unit
119 RETURN_OPEN Return sensor open
malfunctioning
return sensor or
not connected
check connection to PCB
or check resistance NTC
sensor
120 SUPPLY_OPEN Supply sensor open
malfunctioning
supply sensor or
not connected
check connection to PCB
or check resistance NTC
sensor
122 DHW_OPEN
DHW sensor open
malfunctioning
DHW sensor or
not connected
check connection to PCB
or check resistance NTC
sensor
123 FLUE_OPEN
Flue sensor open
malfunctioning flue
sensor or not
connected
check connection to PCB
or check resistance NTC
sensor
125 OUTDOOR_OP
EN
Outdoor sensor open
malfunctioning
outdoor sensor or
not connected or
wrong CH-mode
programmed
check connection to PCB
or check resistance NTC
sensor or change CH-
mode
126 RETURN_SHOR
TED
Return sensor shorted
malfunctioning
return sensor or
short circuiting
check connection to PCB
or check resistance NTC
sensor
127 SUPPLY_SHOR
TED
Supply sensor shorted
malfunctioning
supply sensor or
short circuiting
check connection to PCB
or check resistance NTC
sensor
129 DHW_SHORTE
D
DHW sensor shorted
malfunctioning
DHW sensor or
short circuiting
check connection to PCB
or check resistance NTC
sensor
130 FLUE_SHORTE
D
Flue sensor shorted
malfunctioning
Flue sensor or
short circuiting
check connection to PCB
or check resistance NTC
sensor
132 OUTDOOR_
SHORTED
Outdoor sensor shorted
malfunctioning
Outdoor sensor or
short circuiting
check connection to PCB
or check resistance NTC
sensor
133 NET_FREQ_ER
ROR
Net freq. error detected by
the watchdog
Wrong frequency
from power grid or
aggregate
Check frequency on the
mains of the boiler (60Hz)
134 RESET_BUTTO
N_ ERROR
Too many resets in a short
time period
Reset many times
by user or installer
wait or disconnect and
reconnect power supply
135 PHASE_NEUTR
AL_ REVERSED
Live and neutral of the
main voltage power supply
input are reversed
Phase and neutral
are wrongly
connected
Change phase and neutral
136 T_EXCHANGE_
BLOCK_ERROR
Exchange temperature
exceeded 90 ºC (194 ºF).
water temperature
is above 90
⁰
C
(194 ºF).
Check pump functioning.
Check/open all valves that
might restrict water flow
through the unit. Check
external system pump(s)
that
influences
flow
through the unit. Check if
the system resistance
exceeds
the
spare
capacity of the unit pump.
Содержание S-CBX 105
Страница 2: ......
Страница 40: ...40 9 10 Flue Terminal Positioning ...
Страница 42: ...42 9 11 1 FIGURE 12 LINE G ...
Страница 55: ...55 11 5 Ladder Logic Diagram ...
Страница 56: ...56 11 6 Electrical schematics ...
Страница 57: ...57 ...
Страница 137: ......