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APPLIANCE PROTECTION DEVICES
Appliance shut-off conditions
The appliance is protected from malfunctions by means of
internal checks performed by the electronic P.C.B., which
stops the appliance from operating if necessary.
In the event of the appliance being shut off in this
manner, a code appears on the display which
refers to the type of shut-off and the reason
behind it.
Switch off the appliance. Make sure the external
electric switch is in the OFF position, shut off the
gas valve and contact a qualied technician.
Table summarising error codes
Error code Description
A1
Ignition fails - No ame detected
No ame after safety time(3 attempts)
- Open the valve and follow the activation procedure
- Check the ignition electrode
- Check the detection electrode
Press the ON/OFF to Reset
A2
Overheating (overheat thermostat/thermo
fuse) (95°C)
- A temperature higher than 95°C has been detected.
Check the water pressure
Press the ON/OFF to Reset
A3
Flue pipe blockage
- Verify the air intake/exaust fumes duct
Press the ON/OFF to Reset
A4
Flame lift (3 Times) during burning Press the ON/OFF to Reset
A6
Hot water temp. probe circuit open / short
circuit
Replace water outlet temperature sensor or repair
hardware circuit
A7
Cold water temp. probe circuit open / short
circuit
Replace water inlet temperature sensor or repair
hardware circuit
E6
Flame detected without gas ignition
Repair feedback needle or repair feedback
hardware circuit
E7
Fan error
Replace the fan or repair the fan drive and speed
detection hardware circuit
EE
Solar energy function fault protection The water inlet temperature exceeding 65°C
70
Parameter setting error protection
Error in parameter setting, please contact a qualied
technician.
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