Trouble Shooting / Alarm List - Danfoss OPTYMA Control AK-RC 101 Operation And Maintenance Manual

Trouble shooting / Alarm list

In the event of any anomalies the OPTYMA
warns the operator by displaying alarm codes and
sounding the warning buzzer inside the control
Alarm code Possible cause
E0 Cold room temperature sensor not working
properly
E1
Defrost sensor not working properly
(In this case defrosts will last time d3)
E2
Eeprom alarm
An EEPROM memory alarm has been detected
(All outputs except the alarm one are
deactivated)
E8
Man-in-room alarm
Ec
Compressor protection tripped (e.g. thermal
protection or max pressure switch)
(All outputs except the alarm one – where
applicable – are deactivated)
Ed
Open door - alarm (Open door and tdo-time
has expired)
Temperature
Minimum or maximum temperature alarm.
shown on
The temperature inside the cold room has
display is exceeded the min. or max. temperature
flashing alarm setting (see variables A1 and A2, user
programming level)
OPTYMA Control single-phase AK-RC 101
TM
Control panel. If an alarm is tripped the display will show one
TM
of the following messages.
Solution
• Check that cold room temperature sensor is
• If the problem persists replace the sensor
• Check that defrost sensor is working
• If the problems persists replace the sensor
• Switch unit off and then back on again
• Reset the alarm input inside the cold room
• Check that compressor is working properly
• Check compressor absorption
• If the problem persists contact the technical
Check door / door contact
• Check that the compressor is working
• Sensor not reading temperature properly or
RS8FD402 © Danfoss A/S 2014/11
working properly
properly
assistance
properly.
compressor start/stop control not working.
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