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4 .1 Display diagnostic
The display indications provide help in the diagnosis of fault find-
ing.
The control panel display gives other information for the user.
The following table gives fault code, error and the reson for the
fault.
E01 +
Safety lockout due to failed ignition.
E02 +
Lockout due to safety thermostat.
E03 +
Generic lockout.
Pump circulation failure, insufficient system
E04 +
pressure or water pressure sensor not con-
nected.
E05 +
Control anomaly: fan.
E06 +
NTC heating delivery probe failure.
D.H.W. NTC probe failure / Hot water tank
E07 +
sensor failure.
E08 +
External NTC probe failure.
E09 +
Flue gas NTC probe failure (interruption).
Lockout due to tripping of the flue gas probe
E10 +
and thermal fuse.
E11 +
Parasite flame.
E12 +
Return NTC probe failure.
E13 +
Central Heating pressure high.
Temperature
E14 +
(>2K/s).
Heating delivery temperature between 90°C
E22 +
and 100°C.
E25 +
Boiler in antifreeze.
E26 +
Gas valve fault.
E28 +
Tank NTC probe failure.
E50 +
OT communication fault.
E52 +
Maximum number of remote unlock attempts.
Filling function of C.H. water completed, but
E54 +
pressure is lower than the minimum pressure
for boiler filling.
Filling function of C.H. water completed, but
E58 +
pressure is higher than the maximum pres-
sure for boiler filling.
Next maintenance period expiring.
Enter the "INFO mode" to view the remaining
weeks before maintenance is due
4 .2 Error history (view only)
1 To enter in the "INFO mode" press the key "G" (Figure 4.1)
and hold in for 5 second until the LCD display indicates the
code n02 Figure 4.2.
- 12 -
FAULT FINDING
gradient
circulation
failure
A
B
Figure 4 .1
Figure 4 .2
2 Scroll the various fault code using keys "A" (previous INFO)
or "B" (next INFO) (Figure 4.1) until the LCD display indicates
the code:
• n21 (last error code);
• n22 (second-to-last error code);
• n29 (weeks remaining before the end of the programmed
maintenance period).
3 To exit the parameters menu.
• press the "F" key for 5 seconds (Figure 4.1) (return to previ-
ous level).
4 .3 Programming the maintenance period
1 To enter in the parameters setting mode press at the same
time the 2 keys "F" and "G" (Figure 4.3) and hold in for 5 sec-
ond until the display shows the code P00, indicating entry into
"parameter P00" (Figure 4.4).
A
B
Figure 4 .3
Figure 4 .4
2 Scroll the various menus using keys "A" or "B" (Figure 4.3)
until the LCD display indicates the letters Cod (Figure 4.5)
and then displays three dashes "- - -".
G
F
E
D
C
RESET
bar
G
F
E
D
C
RESET
bar
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