ems55advanced-TCCC-Troubleshooting-Quick-Guide-Iss4
Elstat, Astra Business Centre, Roman Way, Preston, Lancashire, PR2 5AP, United Kingdon
Telephone: +44 (0) 161 22 77 200
www.elstatgroup.com
ems55advanced - Troubleshooting
Quick Guide
User interface
Note: The motion sensor is integrated with the ems controller
(ems55advanced) or remote (ems55Radvanced).
LED indicators
On when the compressor is
running.
On when the evaporator fan is
running.
Saving mode
temperature
disable.
On if the saving mode
temperature is disabled.
Buttons
Defrost
(Starts a manual
defrost)
Down
(Also cancels alarms)
Power up sequence
Checks all the display elements
are working.
Displays the firmware version.
(Example)
Displays the checksum.
(Example)
Normal operation
During normal operation the EMS will display one of the messages
below. If one of the below messages is not displayed the EMS has
registered and alarm or fault.
Ready mode
(Displays USE or temperature)
If evaporator frozen, ensure appliance sensor is
connected properly. Disconnect appliance sensor and
ensure display shows PF1. Otherwise, replace the
controller.
Alarms and troubleshooting
The EMS controller can display messages to aid fault diagnosis. If an
alarm sounds and the EMS controller displays any of the alarms
below, contact your service provider.
Refrigeration system failure
Condenser high temperature alarm (requires a
condenser sensor)
Condenser sensor failure (if used)
Evaporator sensor failure (if used)
Over voltage alarm (SHI) or under voltage alarm
(SLO), if used.
Note that the compressor does not run in over or
under voltage conditions.
Cooler
lights do
not switch
on
If EMS controller is in the ready mode, ensure
that the light switch inside the cooler switched on.
Check for 12 to 13VAC at the rear connector of
the ems controller.
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