freor VEGA QB HG, Operation Manual, Page: 33 / 36

33
The serve-over is out of
order.
Power supply malfunction.
Check for the phase matching (in
the event of changing phases,
one-phase cabinet elements can
be operational).
Check switches.
Check the power network.
The compressor is out of
order.
Refrigeration cycle
malfunction.
Signals of the pressure
sensors.
Fluctuations of the electrical
network voltage.
Contamination of refrigerant
filter.
Leakage of the refrigerant in the
system.
Call the refrigeration
technician/service department.