ems75sz(sub-zero)-Troubleshooting-Quick-Guide-Iss2
Elstat, Astra Business Centre, Roman Way, Preston, Lancashire, PR2 5AP, United Kingdon
Telephone: +44 (0) 161 22 77 200
www.elstatgroup.com
ems75sz Troubleshooting – Quick
Guide
User interface
LED indicators
Compressor.
On when the compressor is running.
Fan.
On when the evaporator fan is running.
Saving mode
temperature
disable.
On if the saving mode temperature is
disabled.
Motion.
On when motion detected.
Buttons
Set
Up
Defrost
(Starts a manual
defrost)
Down
(Also cancels alarms)
Power up sequence
1
Checks all the display
elements are working.
2
Displays the firmware version.
(Example)
3
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)
Saving mode
Defrost mode
Door open
Freeze up protection
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)
Appliance sensor failure
Condenser sensor failure (if used)
Evaporator sensor failure (if used)
Door open alarm
Cooler lights
do not switch
on
If the EMS controller is in the ready mode,
ensure that the light switch inside the cooler
switched on.
Menu access
To access the menu:
1.
Press and hold Set until PAS is displayed.
Press Set four times (x4).
Press Down twice (x2).
Press Up once (x1).
Press Defrost twice (x2).
2.
Ensure that
PS
is displayed.
