AQUAKOND AKY
CONDENSING BOILER
37
code HC0048.10GB ed.B-1811
AKY
8.
ANALYSIS OF LOCKOUTS - FAULT
The CPU-SMART manages two types of lockouts:
- preventive, it warns the customer that the boiler requires maintenance
- operational, it stops the boiler for safety or warranty reasons.
Some operational faults require manual reset; others reset themselves when the problem that caused them is solved.
FAULT
DESCRIPTION
CAUSE
RELEASE
Lockout caused by Flame - Caused by the ACF equipment
F10
Failure to ignite flame after 4 attempts
performed by the equipment.
•
Live and neutral reversed
•
Earth wire not connected
•
Phase-phase connection without neutral
•
Start-up electrode failed or badly positioned
•
Detection electrode failed or badly positioned
•
Detection electrode that moves or disperses to the
earthing system when hot
•
Low CO
2
value
•
Condensation detection electrode defective or earthed
Manual reset
F11
Untimely flame
F12
Ignition failure; not visible.
The count, displayed in the event log,
indicates whether the boiler has had
problems with ignition
F13
The ACF equipment does not accept
the reset command from CPU-SMART
•
ACF has finished its 5 reset attempts in the period
of 15 minutes.
Wait for 15 minutes
or use the equipment
reset device
F14
Lack of communication between ACF
equipment and CPU for more than
60 seconds
•
ACF equipment or CPU-SMART PCB broken
Auto-reset
F15
the CPU-SMART PCB sent the ignition
signal to the equipment which, after 300
seconds, has not lit the flame yet.
•
Open safety thermostat at start up
C h e c k c o n t a c t
closing - TS
•
Faulty ACF equipment
•
Flame detachments immediately after the safety
time (spark)
Auto-reset
F16
Generic equipment lockout
•
Faulty ACF equipment
•
It indicates that if the heat request has remained
active for more than 24 consecutive hours, the
TER equipment has performed a control cycle
switching temporarily to stand-by mode
Auto-reset
F17
Internal malfunction of ACF equipment
that does not accept reset command
from CPU-SMART
•
Faulty ACF equipment
Auto-reset
Lockouts caused by temperature (safety lockouts)
F20
STB safety thermostat activation (for
the whole AKY range)
•
Excess water temperature due to lack of circulation
•
Safety thermostat broken or not connected
•
Closed flue/Fume exhaust clogging/Flue pressure
drop greater than the permitted value
Manual reset of the
CPU-SMART or TER
(RE red LED on)
PFLUE activation (for AKY100 only)
F21
Input ID1 open - causes:
•
Heat exchanger thermal fuse
activation - TF (for the whole AKY
range)
•
INAIL maximum pressure switch
activation - IP or IPMAX (for
AKY050/070/100 only)
•
I N A I L m i n i m u m p r e s s u r e
switch activation - IPMIN
(for AKY050/070 only)
•
The water temperature inside the exchanger has
exceeded the safety limit of the thermal fuse;
disassemble the exchanger and check that there
are no damages, otherwise replace it.
•
The pressure inside water circuit has increased,
thereby activating the IP MAX INAIL pressure
switch to lock the boiler; make sure that taps on
water circuit are open.
•
The pressure inside water circuit has decreased,
thereby activating the IP MIN INAIL pressure
switch to lock the boiler; make sure that the circuit
is not characterised by water leaks and restore
minimum pressure.
•
Empty, small or broken expansion reservoir.
- C P U - S M A R T
manual reset
- With the pressure
switch, manually
reset both maximum
and the minimum
pressure switch.
Pressure switches
are equipped with
the reset key;
press it to reset the
pressure switch.
FAN lockout - burner fan
F30
Fan speed too low in start up phase
- VAG
•
Burner fan broken.
•
FAN electric cables wrongly connected or not
connected
Manual reset
F31
Fan speed too high in start up phase
- VAG
F32
Fan speed, during operation, outside
minimum and maximum set parameters
- VAG
Manual reset, auto-
reset after 5 minutes
