AQUAKOND AKY
CONDENSING BOILER
38
code HC0048.10GB ed.B-1811
AKY
FAULT
DESCRIPTION
CAUSE
RELEASE
F35
Exchanger door temperature greater
than set temperature (for AKY100 only)
•
Exchanger door thermostat (TDOOR) activation Manual reset
F38
Flue gas temperature greater than
102°C
•
Fume thermal fuse (TFUMI) activation
•
The gas flow rate might exceed the boiler
adjustment parameters
•
check the exchanger cleaning.
Manual reset
PFLUE activation
•
Closed flue/Flue gas exhaust clogging/Flue
pressure drop greater than the permitted value
•
If contact ID6 inverts (PFLUE activation) fault F38 is
signalled after the flame stabilisation time (sec. b8)
Manual reset
NTC probes broken or missing
F41
NTC1 probe error, water delivery T
•
No signal from probe or broken probe
Auto-reset
Over-temperature
F51
The temperature of the water delivery
probe NTC1>TH1
•
Minimum heat output of the boiler over-sized
compared to the heat output required by the
environment.
•
Check the TH1 parameter - water delivery setpoint.
Auto-reset
if NTC1< TH1-15
Check Modbus communication
F60
Communication error between CPU-
SMART PCB and Modbus network,
SmartEASY/WEB
•
ModBus network is disconnected
•
The address of the PCB is wrong and/or not
configured in the Modbus network
Auto-reset
No voltage
F75
No voltage during operation cycle
(excluding stand-by);
the fault is not visible on remote control
but only counted.
•
No voltage during operation
Auto-reset
Pressure control and water circulation in the circuit
F80
•
No water pressure, water pressure
PRH < ST5 - P5
•
INAIL minimum pressure switch
activation - IPMIN (for AKY100 only)
•
If this happens frequently, check the presence of
leakages in water circuit.
- Auto-reset
- Manual reset (for
AKY100 only)
F81
Preventive alarm, water pressure
PRH < ST5
•
Restore water pressure value of the hydraulic
circuit (except for AKY100)
Faults are displayed
on LCD panel,
without stopping the
equipment
F82
Preventive alarm, water pressure
PRH > TH5
•
Excessive pressure inside water circuit, check the
hydraulic circuit load or the expansion reservoir
(except for AKY100)
F85
No water circulation, FLH value is equal
to zero
•
Water circuit clogged, taps closed or circulator
not operating
•
Flowmeter not connected or faulty
Auto-reset
F86
Water flow rate lower than minimum
setpoint FLH < ST6 - P6
•
Check water circuit length and diameters
Parameter configuration error
F99
Wrong programming of CPU-SMART
PCB parameters
Check:
•
S1 (NTC1 probe enabling) =1
•
S5 (B2 water pressure switch enabling PREX) =
see parameter table
•
S6 (B3 water flow enabling - FLUX) = 4
Auto-reset when
S1, S5 and S6
parameters are ≠ 0
Internal malfunction of CPU-SMART PCB
F00
Internal malfunction of CPU-SMART
PCB
•
Perform a manual reset of the PCB; replace the
CPU-SMART PCB if the problem persists
Manual reset
In the event of communication problems between CPU-SMART PCB and LCD panel, the word
CPU
will flash on the display if the
problem is caused by the CPU; three flashing dots will be displayed if the problem is caused by the display PCB.
If needs be, check that the display and the PCB are correctly connected and that the small cable RJ11 is securely held in the
connector.
