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Alarms summary table
The units envision the signalling of the
possible unit malfunctions. These si-
gnals are indicated by the fl ashing
alarm key (bell) on the left part of the
display. If the bell is pressed again, it
allows to display the alarm in progress.
The rearm of these alarms can take
place automatically or manually (on the
and a brief explanation of the possible
causes.
Also remember that the possibility exists
to display an alarms log, which states
the last alarms that have occurred on
the unit, ordered by date. This log can
be activated using the combination of
keys.
basis of the type and seriousness of the
alarm that has occurred). To reset the
alarm message, the bell key must be
pressed again (remember that resetting
the alarm does not solve the cause that
generated it, but just the display is can-
celled). The following table lists the pos-
sible errors that the unit can generate,
Message Alarm description Cause of error
High pressure
circuit 1
• No water circulation on the system hydraulic side in winter
functioning mode
• No circulation on the geothermy/well hydraulic side in
summer mode
• No DHW hydraulic side circulation in DHW mode
• Hydraulic pump off, burned, etc...
• Water side pressure at zero bar
• System shut-off taps closed
• Fuse broken inside electric control board
Low pressure
circuit 1
• Machine without refrigerant gas
• Little water circulation on the system cooling side in sum-
mer mode or geothermy/well side in winter or DHW mode
• Cooling system broken
• Dirty water filters
High pressure
circuit 2
• No water circulation on the system hydraulic side in winter
functioning mode
• No water circulation on the geothermy/well hydraulic side
in summer mode
• No DHW hydraulic side circulation in DHW mode
• Hydraulic pump off, burned, etc...
• Water side pressure at zero bar
• System shut-off taps closed
• Fuse broken inside electric control board
Low pressure
circuit 2
• Machine without refrigerant gas
• Little water circulation on the system cooling side in sum-
mer mode or geothermy/well side in winter or DHW mode
• Cooling system broken
• Dirty water filters
Gas anti-freeze
circuit 1
• No water circulation on the well/geothermy side in cooling
circuit N°1 winter or DHW mode
• No water circulation on the system side in cooling circuit
N°1 summer mode
• Hydraulic pump off, burned, etc...
• Water side pressure at zero bar
• System shut-off taps closed
• Fuse broken inside electric control board
Gas anti-freeze
circuit 2
• No water circulation on the well/geothermy side in cooling
circuit N°2 winter or DHW mode
• No water circulation on the system side in cooling circuit
N°2 summer mode
• Hydraulic pump off, burned, etc...
• Water side pressure at zero bar
• System shut-off taps closed
• Fuse broken inside electric control board
System
water anti-freeze
Temperature of the cooling-heating system water below the
set-point
• Hydraulic pump off, burned, etc...
• Water side pressure at zero bar
• System shut-off taps closed
• Fuse broken inside electric control board
DHW
water anti-freeze
Temperature of the DHW system water below the set-point • Hydraulic pump off, burned, etc...
• Water side pressure at zero bar
• System shut-off taps closed
• Fuse broken inside electric control board
Geothermy-well
water anti-freeze
Temperature of the geothermy/well system water below the
set-pointt
• Hydraulic pump off, burned, etc...
• Water side pressure at zero bar
• System shut-off taps closed
• Fuse broken inside electric control board
Probe error The probe cable is interrupted
System flow meter
Contact opening of the cooling-heating system side water
flow safety device installed outside the heat pump (flow
meter), due to lack of water circulation
• Hydraulic pump off, burned, etc...
• Water side pressure at zero bar
• System shut-off taps closed
• Fuse broken inside electric control board
Geothermy/well
flow meter
Contact opening of the geothermy/well system side water
flow safety device installed outside the heat pump (flow
meter), due to lack of water circulation
• Hydraulic pump off, burned, etc...
• Water side pressure at zero bar
• System shut-off taps closed
• Fuse broken inside electric control board
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