OFFICE LINE
31
If the thermostat’s operating program is lost, or if an abnormal
group temperature setting appears, reset the system to the factory
defaults. Follow the steps below:
• Turn off the machine, press and hold down the
button, then turn the machine on at the power switch.
• Release the button when the system displays the “PrS”
message.
• Turn the machine off and on again at the power switch to
restart the thermostat.
If the temperature gauge in the group’s boiler has short-circuited,
the system will display the “A1” error message. Call a service
technician to replace or repair it.
If the temperature gauge cable is disconnected, the system will
display the “A2” error message. Call a service technician to repair
it.
LEVA MULTIBOILER TEMPERATURE CONTROL
Reset temperature to factory default
Thermostat alarms
PrS
a1
a2
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