PROBE RESISTANCE VALUES
The air and defrost probes have the following temperature resistance values (K ohms)
FOSTER CODE INTERNAL FUSE VOLTAGE WIRING DIAGRAM
SP1HC 16 A 230/1/50 81800LSB
SP2HC 20 A 230/1/50 81800LSB
SP3HC 20 A 230/1/50 81800LSB
SP4HC 10 A 400/3/50 81802LSB
SP5HC 16A 400/3/50 81802LSB
SP2LC 20A 230/1/50 81800LSB
SP3LC 16A 400/3/50 81802LSB
SP4LC 16A 400/3/50 81802LSB
CONTROLLER ALARMS AND FAULT FINDING
When an alarm condition occurs the unit will display an alarm code ERR (this will differ according to the nature of
the alarm):
High Temperature Alarm.
In the event of a high temperature alarm,
HI and the room temperature will be displayed alternately.
Possible cause:
To frequent door openings.
The product load in the room exceeds the room capacity.
The temperature of the product stored in the room is too high.
Refrigeration system malfunction.
Low Temperature Alarm.
In the event of a high temperature alarm,
LO and the room temperature will be displayed alternately.
Possible cause:
Faulty PCB.
Room Temperature Probe Alarm.
In the event of a room temperature probe alarm,
E0 will be displayed.
Room temperature probe not connected correctly.
Faulty probe.
Evaporator Probe Alarm.
In the event of a room temperature probe alarm,
E1 will be displayed.
Evaporator probe not connected correctly.
Faulty probe.
FUSE RATINGS
Temperature Kohms Temperature Kohms
+50°C 4,161 0°C 27,280
+40°C 5,828 -10° C42,450
+30°C 8,313 -20° C67,740
+20°C 12,090 -30° C111,300
+10°C 17,960 -40° C188,400
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