Alarm Codes - Danfoss OPTYMA Operation And Maintenance Manual

OPTYMA Control three-phase
TM

Alarm codes

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 are deactivated)
E8
Man-in-cold-room alarm
Ec Compressor protection tripped (e.g. thermal
protection or max. pressure switch)
(All outputs except the alarm– where
applicable – are deactivated)
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)
24
TM Control panel. If an alarm is tripped, the display will show one
of the following messages:
RS8FE102, 080R9278
Operation and Maintenance Guide
Solution
• Check that the cold room temperature
sensor is working properly.
• If the problem persists, replace the sensor.
• Check that the defrost sensor is working
properly.
• If the problem persists, replace the sensor.
• Switch unit off and 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 assistance service.
• Check that the compressor is working
properly.
• Sensor not reading temperature correctly or
compressor start/stop control not working.
© Danfoss A/S (RA Marketing/MWA), Nov. 08