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BOILER PROTECTION DEVICES
Table summarising error codes
Anti-frost Device
The anti-frost function acts on the central heating fl ow temperature
probe, independently from other regulations, when the electrical
supply is turned on.
If the primary circuit temperature falls below 8°C the pump will
run for 2 minutes.
After the two minutes of circulation (fi xed) the boiler will check
the following:
a) if the central heating fl ow temperature is > 8°C, the pump
stops;
b) if the central heating fl ow temperature is between 4 and 8°C,
the pump will run for another two minutes;
c) if the central heating fl ow temperature is < 4°C, the burner will
fi re (heating position) at minimum power until the temperature
reaches 33°C, the burner will go out and the pump will continue
to run for two minutes.
The anti-frost device activates only when (with the boiler
operating correctly):
- the system pressure is correct;
- the boiler is electrically powered;
- there is a supply of gas.
Central Heating circuit
RESET
Display Description
X
1 01
Overheat
1 02
Pressure Sens Error
1 03
Insuffi cient circulation
1 04
1 05
1 06
1 07
1 08
Insuffi cient water (request fi lling)
1 10
C.H. Flow temp. probe circuit open / short circuit
1 12
C.H. Return temp. probe circuit open / short circuit
1 14
External sensor circuit open / short circuit
1 18
Heating delevery probe problem
1 P1
Insuffi cient circulation indication
1 P2
1 P3
1 P4
Insuffi cient water (request fi lling)
D.H.W. circuit
2 05
DHW In Probe Open Circuit
Internal P.C.B.’s
3 01
EEPROM error
3 02
Comunication error
3 03
Main P.C.B. error
X
3 04
Too many (> 5) resets in 15 minutes
3 05
Main P.C.B. error
X
3 06
Main P.C.B. error
3 07
Main P.C.B. error
X
3 13
Low Voltage Fault
3 P9
Sched.Maintanace-Call Service
External P.C.B.’s
4 11
Zone 1 - Room sensor circuit open / short circuit
4 12
Zone 2 - Room sensor circuit open / short circuit
4 13
Zone 3 - Room sensor circuit open / short circuit
Ignition and Detecion
5 01
No fl ame detected (After 5 times with
5P6)
X
5 02
Flame detected with gas valve closed
5 03
Flame detected with gas valve closed
(After 20 seconds with 502)
X
5 04
Flame lift
X
5 P3
Flame cut-off
5 P5
Low Gas Pressure Fault
5 P6
Ignition Failed
Air Inlet / Flue gas outlet
6 11
Fan Warning - Anomaly in air inlet and / or fl ue gas
exhaust ducts (Boiler switch off the fan works 20
minutes at maximum).
If the problem is not resolved appears error 612.
6 12
Fan Error (speed higher or lower than the
set values)
Multi-zone Heating
7 01
Zone 1 send sensor defective
7 02
Zone 2 send sensor defective
7 03
Zone 3 send sensor defective
7 11
Zone 1 return sensor defective
7 12
Zone 2 return sensor defective
7 13
Zone 3 return sensor defective
7 22
Zone 2 overheating
7 23
Zone 3 overheating
7 50
All Heating Zones locked
Combustion Control System (CCS)
8 01
Calbration Tuning Fault
8 02
Flame Sensed with Gas Valve Closed
8 03
Mismatch kW Size, ID combustion
(Set parameter 229)
8 04
Decoupling Clip-In required (see note)
NOTE - ERROR 804:
TO CONNECT THE BOILER TO ELECTRONIC
SOLUTIONS FOR SOLAR MANAGEMENT OR
IBRID SYSTEMS (ONLY FOR COMBINATIONS NOT
ADMITTED), IT’S NECESSARY TO INSTALL A CLIPIN
SUPPLIED AS ACCESSORY CODE 3319171.
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