Troubleshooting; How To Check That Ems Controllers Are Working Correctly - Elstat ems55advanced Manual

8

troubleshooting

The following table shows the display for alarm conditions. ems controllers can be programmed to sound a buzzer with
alarm conditions.
problem or alarm
flashes for 3 seconds
then static
continuous flashing
motion
detection LED flashing
continuously
cooler not cooling
cooler lights do not
switch on
8.1

how to check that ems controllers are working correctly

During the ready mode, the ems controller displays the appliance sensor temperature, such as 4.0, or the word US E as
shown below.
The option to display the temperature or the word US E is set by the display (dI S ) parameter.
Follow the chart to ensure that the ems controller is working correctly in the ready mode for coolers with door switches fit-
ted.
meaning action
See "how to troubleshoot door alarms (door switch fitted)" on page 48
l
door open
See "how to troubleshoot door alarms (no door switch fitted)" on page 48
l
refrigeration
See "how to troubleshoot refrigeration system failure (rSF) alarms" on page 50
l
system failure
condenser
high
Not applicable for CO2 coolers
l
temperature
appliance sensor (
l
condenser sensor (
l
display alternates between
sensor
evaporator sensor (
l
failures
display alternates between
See "how to troubleshoot temperature sensor alarms" on page 50
l
CO2 alarm
gas cooler high
temperature
CO2 alarm
Lock out
motion sensor
See "how to troubleshoot motion sensor alarms" on page 49
l
problem
See "how to troubleshoot not cooling problems" on page 52
l
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.
PF1
)
PF2
):
PF2
and the appliance sensor temperature
PF3
):
PF3
and the appliance sensor temperature.
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