Porkka C 940 Installation And Operation Manual page 40

* The control unit will operate in a backup mode. Reset the
alarm and contact the authorised service company immediately.
Note if necessary remove products to back up storage as
required. Porkka and or it's distributors and or it's service
contractors will not under any circumstances be liable for
product deterioration or loss whosoever it occurs. Product
should be insured by the equipment operator.
"cSd" Condenser temperature alarm
High condensing temperature i.e. abnormally
high ambient temperature or condenser blocked.
Put controller on standby and unplug or
disconnect the equipment from the electrical
supply. Clean the condenser fi lter by washing or
replacing if required, also clean fi nned condenser
with a soft brush or vacuum as necessary.
Thermostat probe failure *
"P1"
Evaporator probe failure *
"P2"
Auxiliary probe failure *
"P3"
Probe alarms : P1, P2 and P3. The alarm will
automatically stop 10 seconds after the probe
resumes normal operation. NB Engineer to check
connections prior to replacing probe.
Extra probe failure*
"P4"
*Note! The cabinet operates on its standby
system and will hold normal temperature, but
reset the alarm signal and immediately contact
your service provider.
Data or memory failure *
"EE"
The controllers are provided with an internal
checking system for the data integrity. Alarm 'EE'
fl ashes when a failure in the memory data occurs.
In this instance the alarm output is activated. To
reset 'EE' alarm status and restart normal function
press any button, the display will show 'rSt' for
approximately 3 seconds.
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