Instruction manual

KT series chillers – Installation and Operation manual
Issue 7.0 Page 14
5.3 Troubleshooting
Symptom Causes
Compressor not running,
but fan running
Is the controller displaying an alarm?
If there is no obvious cause, check…
· The condenser is clean
· Ambient temperature not above 30°C
The likely cause is the compressor’s internal protection has been activated and
should restart in five minutes.
Noisy operation /
High fluid pressure
And/or low flow
Check:
· No restrictions in the pipe work
· Pressure set too low (factory set pressure altered?)
Clean system with weak detergent solution, rinse thoroughly to remove all
detergent. Use Hexid fluid as coolant.
Fluid lines becoming
fouled brown or green
Algae contamination.
Clean system with weak detergent solution, rinse thoroughly to remove all
detergent. Replace fluid lines with black lines, if not already fitted, to inhibit
algae growth. Use Hexid fluid as coolant.
Fluid seen leaking from
system
Under high humidity conditions, fluid may appear to be leaking from the
system. This is usually just condensation, but do check for fluid leaks.
Poor cooling Continued failure to cool may indicate high ambient temperature or excessive
load applied to the unit. Check these first
Otherwise, may be caused by blocked condenser.
Clean with soft brush or vacuum cleaner with brush attachment
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