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8. Troubleshooting
The followingtable shows the display for alarm conditions.ems controllers canbe programmedtosoundabuzzer with
alarm conditions.
PROBLEM OR
ALARM
MEANING ACTION
Door open
• See “how to troubleshoot door alarms (door switch fitted)”
• See “how to troubleshoot door alarms (no door switch fitted)”
Refrigeration
system
failure
• See “how to troubleshoot refrigeration system failure (rSF) alarms
Condenser
high
temperature
• Not applicable for CO2 coolers
Sensor
failures
• Appliance sensor (PF1)
• Condensersensor(PF2): display alternates between PF2 and the appliance
sensor temperature
• Evaporator sensor(PF3): display alternates between PF3 and the
appliance sensor temperature.
• See ”how to troubleshoot temperature sensor alarms”
Flashes for 3
seconds then static
CO2 alarm
gas cooler
high
temperature
Continuous flashing
CO2 alarm
lock out
Motion detection
LED flashing
continuously
Motion
sensor
problem
• See”how to troubleshoot motion sensor alarms”
Cooler not cooling • See”how to troubleshoot not cooling problems”
Cooler lights do not
switch on
If the ems controller is in the ready mode, check the lights switch inside the
cooler. Note that ems controllers normally switch the cooler lights off in the
saving mode.