Service manual

21
21
GB
Problem
Possible Cause
Solution
Audible & Visual
Alarms/Warnings
> Low temperature alarm
> Cancel audible alarm and
investigate cause.
> High temperature alarm
> Cancel audible alarm and
investigate cause.
> T1 Air probe failure
> Check and replace the air
probe
> T2 Evaporator probe failure
#
> Check and replace the
evaporator probe
> T3 Condenser probe failure
#
> Check and replace the
condenser probe.
> Condenser clean warning
#
> Carry out cleaning regime on
the condenser. The timer is
reset when power is removed
and reset.
> Condenser high temperature
alarm
#
> Clean condenser and ensure
ambient temperature is not
too high.
> High pressure alarm
#
> Check ambient temperature
and refrigeration system.
> Door open alarm
#
> Press to silence alarm and
close the door. If the alarm
persists and the door is closed
check and replace the door
switches.
> Mains power failure
#
> ‘PF’ will be displayed, the
alarm will sound and will
show when there has been a
mains power failure that has
affected the internal air
temperature of the cabinet
(only if the unit was not in
standby mode). When mains
power is restored the cabinet
will continue to operate, and
adjust the temperature as
required. The warning will
sound & show until has
been pressed and released, to
cancel the alarm. We would
recommend the contents of
the unit are inspected.
#
only displayed if applicable to model and enabled through parameters
Compressor will not start
> No voltage in socket
> Use voltmeter to check
> Electrical conductor or wires may
be cut
> Use ohmmeter to check for
continuity
> Defective electrical component:
thermostat, relay, thermal
protector etc.
> Replace defective component