101
EN
6.6
Fault/error message
In the event of a fault/malfunction the message
"ALL"
will
appear on the display with the alarm number and the light bar
(4) will turn red.
Example: “ALL 02” (Low System Pressure Error: less than 0.8
bar).
Before repairing the fault:
– disconnect the appliance from the mains power by setting the
main switch to "OFF"
OFF
Fig. 32
– as a precautionary measure, close the gas isolation valve.
Repair the fault and start-up the boiler again.
NOTE:
When, in addition to the message "ALL ..." the symbol
h
also appears on the display, after having repaired the
fault, button
Y
must be pressed for approx. 3 seconds, and
then released. The boiler starts up again normally.
6.7
Fault / malfunction codes
Type
No.
Description
ALL
01
Air pressure switch fault
ALL
02
Low water pressure in system
ALL
03
High water pressure in system
ALL
05
Boiler delivery probe fault
ALL
06
No flame detection
ALL
07
Safety thermostat or siphon pressure switch
triggered
ALL
08
Fault in flame detection circuit
ALL
09
No water circulating in primary system
ALL
10
Hot water tank sensor/anti-freeze faulty
ALL
11
Modulator disconnected error
ALL
13
Smoke probe triggered
ALL
14
Smoke probe fault
ALL
15
Fan fault
ALL
18
Boiler delivery probe temperature above 117°C
ALL
19
External sensor fault (flashing warning)
ALL
20
Mix 1 zone safety thermostat triggered
ALL
21
Mix 1 Zone valve delivery probe fault
ALL
22
Mix 2 zone safety thermostat triggered
ALL
23
Mix 2 Zone valve delivery probe fault
ALL
24
S1 solar delivery probe fault
ALL
25
S2 solar exchanger probe fault (tank)
ALL
26
S3 2nd solar system delivery probe fault
ALL
27
Solar application coherence fault – hydraulic
configuration
ALL
29
Number of expansion boards connected fault
ALL
30
Return sensor fault
ALL
31
Cascade delivery probe (SMC) fault
ALL
32
Three zone system configuration fault
ALL
35
Communication fault RS485 board
ALL
36
Number of boilers connected in cascade fault
ALL
45
Manual release performed more than 6 consecutive
times in the last hour
ALL
70
Cascade stop general fault
ALL
71
General fault with a boiler in the cascade
ALL
72
Delivery probe (SMC) disconnected error
ALL
80
Gas valve control circuit hardware fault
ALL
89
Gas valve control circuit hardware fault
ALL
98
Maximum number of software errors reached
ALL
99
Generic board software error
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