Page 19
SYSTEM FAULTS
If a fault disrupts the operation of the controller and it fails to restart itself correctly the SYSTEM LED will flash
and the alarm will sound. The Remote Alarm may also be de-energised.
If this occurs the controller should be reinitialised by performing a System Reset as described in the section on
Initial Setting Up. Note that all stored data will be lost in this operation and logging will be disabled and must be
re-programmed if required.
If the Controller still fails to function Correctly a Service Engineer should be called.
It may be possible to restore limited function to a faulty Controller by putting it into a ‘reset’ condition. In this
state it will maintain the liquid level between the high and low sensors but levels, temperatures and alarms will
not be monitored or logged. The LEDs and temperature readout will be frozen and should be ignored.
The Controller may be forced into the Reset state by transferring the link on LK2 (next to the sounder) to the
RESET position on LK1. It will be necessary to remove the Controller from the refrigerator cabinet and remove
the white cover from the PCB to do this. This link change will also silence the audible alarm.
If the behaviour of the Controller is still unsatisfactory it should be left switched off at the front panel. The
Manual Fill switch on the Connector PCB may be used to top up the liquid level pending a service call.
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