7. Fault indication and analysis:
Fault
display
Nature of fault
Cause
Remedy
Unit's
operation
Red color conti-
Hi-pressure in re-
Ambient temperature too high
Unit's specified range of application exceed
The unit still operat
e
nuously blink
frigerant system
Condenser contaminated
Clean
Filter mat contaminated
Clean or replace
Condenser fan defective
Replace
Red color blink
Risk of icing
Operational indication, icing up
Raise the set point value of the internal temperature Automatically
shut off
Evaporator contaminated
Clean
Evaporator fan defective
Replace
Lack of coolant
Carry out of cooling service
No signal
Unit not operate
Control panel switch off
Switch on the control panel
Unit not operate
No voltage supply
Supply new line power
Breaker's tripped
Replace or switch on
Under voltage
Check line voltage connection
Internal fuse has broken
Carry out of cooling service
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