KT1 series chillers – Installation and Operation manual
Compressor not running,
but fan running
Is the controller displaying an alarm?
If there is no obvious cause, check…
• The condenser is clean
• Ambient not too high
• No temporary power failure
The likely cause is the compressor’s internal protection has been activated
(normally caused by high ambient temperature) and should restart in five
minutes.
Noisy operation /
High fluid pressure
And/or low flow
Check:
• Pump filter, if fitted
• No restrictions in the pipe work
• Operating coolant pressure set too low
Clean fluid path with weak detergent solution, flush and replace fluid with
correct Hexid fluid.
Fluid lines becoming fouled
brown or green
Algae contamination.
Clean system with weak detergent solution, replace fluid lines with opaque
(ideally black) lines to inhibit algae growth. Use Hexid fluid.
Fluid seen leaking from
system
Under high humidity conditions, fluid may appear to be leaking from the
system. This is usually just condensation, but it is always prudent to check for
fluid leaks.
Flush with clean water, replace fluid with Hexid.
Almost always caused by blocked condenser.
Clean with soft brush or vacuum cleaner with brush attachment
Continued failure may indicate high ambient or excessive load applied to the
unit. Check these first
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General