24
FAULT
CAUSE
SOLUTION
RESTART PROCEDURE
Discharge pressure probe
error
AND
Suction pressure
probe error
It stops the compressor
Major refrigerant
leak, the unit has lost
all of its refrigerant
gas
Faulty pressure
probes
Contact authorized technical
service
Contact authorized technical
service
The chiller can be restarted after
it is repaired
Various
temperature/pressure/flow
probe errors
Depending on the probe, the
unit may keep running or it
may stop working
A probe is damaged
or not reading
correctly
Check that the electrical
connections are tight. If the
problem persists
contact
authorized technical service
The chiller can be restarted when
the faulty probe is replaced
The external controller
display shows the message
„NO LINK“ or „I/O board
01 fault” or it doesn’t lit up
at all
The chiller keeps running and
still responds to commands
received through its digital
inputs and to remote control
through Ethernet
External controller
display cable
damaged or loose
connections
External controller
display damaged
Check that the cable
connections are tight at both
ends and examine the total
length of the cable for any
damages. If the cable is
damaged
contact authorized
technical service
to replace it
Contact authorized technical
service
The chiller is still running
normally and it accepts On/Off
commands through the 23/24
digital input. Other settings and
information functions are still
available through the Ethernet
connection
Maintenance request
The chiller has
exceeded the working
hours defined
between preventive
maintenances
Contact authorised technical
service for a preventive
maintenance of the unit
It's a warning only; the chiller is
still working normally. The
authorised technical service will
reset the warning during the
preventive maintenance