45
Antilocking of pump and three-way valve
To prevent locking of the components, the appliance performs a self-test every 24 hours: the pump starts up for 3 seconds and the
diverting valve is operated.
Frost protection
The boiler is fitted with an anti-freeze device, which checks the heating outlet temperature of the boiler: if this temperature falls
below 8°C, the pump starts up (circulation within the heating appliance) and runs for 2 minutes.
After two minutes' circulation, the microprocessor carries out the following check:
a - if the outlet temperature is > 8°C, the pump stops;
b - if the outlet temperature is > 3°C and < 8°C the pump continues for a further 2 minutes;
c - if the outlet temperature is < 3°C, the burner is ignited (in heating mode at minimum power) until a temperature of 33°C is
reached. Once this temperature is reached, the burner switches off and the circulation pump continues to operate for a further two
minutes.
It is possible to cause the pump to operate continuously using parameter
P
in the settings menu (see menu table).
The antifreeze protection is only activated if the boiler is in perfect working order,
in other words:
- the appliance water pressure is sufficient;
- the boiler is receiving an electrical supply;
- gas is being supplied.
Display
CAUSE
S 01
Flame not detected on first attempt
S 02
Flame not detected on second attempt
S 04
Open circuit on Domestic hot water sensor
S 05
Short circuit on Domestic hot water sensor
S 06
Flame separation
S 25
Tank sensor open
S 26
Tank sensor short circuit
S 27
Tank overheating
S 30
External sensor open circuit
S 31
External sensor short circuit
S 80
Open circuit or short circuit on room sensor of the Clima Manager remote control
Display
CAUSE
E 02
Insufficient water pressure
E 06
Open circuit on heating outlet sensor
E 07
Short circuit on heating outlet sensor
E 08
Open circuit on heating return sensor
E 09
Short circuit on heating return sensor
E 10
Contact open in the floor overheat safety device circuit (Flora room thermostat)
E 20
False flame detection with gas valve closed
E 94
Electronic control problem
E 95
Read error in heating outlet and return sensors
E 99
5 resets in less than 15 minutes. Resetting by a boiler ON/OFF operation
