Ferroli ARENA 30 A Installation And Operating Instructions Manual page 37

ARENA 30 A
Fault
High flue gas temperature
Excessive central heating
outlet temperature
Excessive central heating
return temperature
Outlet sensor faulty
Return sensor faulty
Domestic hot water sensor
faulty
Flue gas sensor faulty
External probe faulty
No communication between
main board and ignition devices
Microprocessor faulty
Possible cause
• Flue partially blocked
or insufficient
• Pump blocked
• Pump faulty
• No system circulation
• Domestic hot water heat
exchanger dirty or
blocked
• Sensor damaged or
wiring cut
• Sensor damaged or
wiring cut
• Sensor damaged or
wiring cut
• Sensor damaged or
wiring cut
• Sensor damaged or
wiring short-circuited
• Wiring cut or incorrect
between main board and
ignition devices
• Microprocessor operation
faulty
Solution
• Check the efficiency of the flue,
the flue gas exhaust pipes and
the outlet terminal
• Free the pump by removing the
cap and rotating the shaft with a
screwdriver
• Check or replace the condenser
or the pump
• Check system and pump
• Clean domestic hot water heat
exchanger
• Check wiring or replace the
sensor
• Check wiring or replace the
sensor
• Check wiring or replace the
sensor
• Check wiring or replace the
sensor
• Check wiring or replace the
sensor
• Check the wiring and the
connections between the
boards
• Disconnect and restore the
electrical power supply. If the
problem persists check and/or
replace the main board
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