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Troubleshooting
Alarms/Warnings:
During operation the current temperature inside the appliance will be displayed. At certain times this will
change to indicate a particular appliance operation or fault. The indicators you may see are as follows:
hi - The internal temperature of the appliance is higher than it should be. Ensure that the door is closed
and that the air flow inside is not obstructed by excesive or poor loading of product. The alarm will reset
if the temperature falls to a normal level. If this does not happen please contact your authorised dealer or
Foster Service.
Lo - The internal temperature of the appliance is lower than it should be. Check to ensure that the
appliance has not been loaded with product at a lower temperature than the normal appliance operating temperature. If this is not the case
please call your authorised dealer or Foster Service.
do - The appliance door is open. Close the door to cancel the alarm.
tA - This indicates that the internal temperature probe has failed. Call your authorised dealer or Foster Service to arrange for this to be replaced.
During this time the appliance cannot maintain an accurate temperature and all product should be removed and the appliance switched off.
tE - This indicates that the evaporator probe has failed. Call your authorised dealer or Foster Service to arrange for this to be replaced.
PF - The mains power has been removed from the appliance for a period of time and has now been restored. This may have resulted in a rise in
appliance temperature. Caution should be taken when using products stored within to ascertain whether these products are suitable for use.
Upon restoration of the power supply the appliance will resume normal operation and the PF can be cancelled by pressing button 1 once.
hC - The condenser temperature is higher than it should be. If the appliance is being subjected to particularly high ambient temperatures steps
should be taken to reduce this. If the ambient temperature is not high or reducing the temperature does not rectify the fault please contact your
authorised dealer or Foster Service.
Cnd - The condenser clean period has expired. Please contact your authorised dealer or Foster Service.
While in an alarm condition icon 'a' will also be illuminated. The audible alarm can be muted temporarily by pressing button 1.
(Some indications are only visible periodically during specific appliance operations such as defrost or when activated through use of the appliance).
Probe Function
T1 - Controls the compressor on/off cycle based on the Set Point value located in the air return close to the fans.
T2 - Evaporator probe for defrost control.
T3 - The temperature displayed on the controller. The response is delayed to prevent the display of large changes in the temperature. Over time
the displayed temperature will move to align with the T1 temperature subject to product load and appliance use. The probe is located in front of
the air duct at the top left corner.
EMD Multidecks - Service Manual
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