Alarms Summary Table - AERMEC VXT Mode D'emploi

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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

Message

• No water circulation on the system hydraulic side in winter

functioning mode

High pressure

• No circulation on the geothermy/well hydraulic side in

circuit 1

summer mode

• No DHW hydraulic side circulation in DHW mode

• Machine without refrigerant gas

Low pressure

• Little water circulation on the system cooling side in sum-

circuit 1

mer mode or geothermy/well side in winter or DHW mode

• No water circulation on the system hydraulic side in winter

functioning mode

High pressure

• No water circulation on the geothermy/well hydraulic side

circuit 2

in summer mode

• No DHW hydraulic side circulation in DHW mode

• Machine without refrigerant gas

Low pressure

• Little water circulation on the system cooling side in sum-

circuit 2

mer mode or geothermy/well side in winter or DHW mode

• No water circulation on the well/geothermy side in cooling

Gas anti-freeze

circuit N°1 winter or DHW mode

circuit 1

• No water circulation on the system side in cooling circuit

N°1 summer mode

• No water circulation on the well/geothermy side in cooling

Gas anti-freeze

circuit N°2 winter or DHW mode

circuit 2

• No water circulation on the system side in cooling circuit

N°2 summer mode

Temperature of the cooling-heating system water below the

System

set-point

water anti-freeze

Temperature of the DHW system water below the set-point

DHW

water anti-freeze

Temperature of the geothermy/well system water below the

Geothermy-well

set-pointt

water anti-freeze

Probe error

The probe cable is interrupted

Contact opening of the cooling-heating system side water

flow safety device installed outside the heat pump (flow

System flow meter

meter), due to lack of water circulation

Contact opening of the geothermy/well system side water

Geothermy/well

flow safety device installed outside the heat pump (flow

flow meter

meter), due to lack of water circulation

Alarms summary table

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,

Alarm description

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.

Cause of error

• Pompa idraulica spenta, bruciata,ecc...

• Pressione lato acqua a zero bar

• Rubinetti di intercettazione impianto chiusi