Kodiak
Recirculating Chiller Technical Manual
Manual# 820-0043 Rev N, 11/25/2019
30
Problem
Probable Cause
Recommended Remedy
No coolant flow
Pump suction strainer fouled or
clogged.
Remove and clean strainer, then
reinstall.
No coolant in reservoir.
Check for leaks fix leaks, and fill
reservoir.
Pump overload has tripped.
Turn unit off. Wait for overload
to cool. It will reset on its own in
15 minutes or less.
Leaks in external piping.
Repair leaks.
Pump motor shaft is bound.
Replace pump motor.
Closed valve or obstruction in the
external piping.
Open valve or remove the
obstruction.
Damaged pump.
Replace pump.
Chiller shuts down
during operation
Shutoff feature is enabled in the
controller set up menu.
(Controllers with options II and
III)
Find out and correct the fault that
is causing the shutoff. Disable
shutoff feature (see controller set
up).
Low flow switch tripped.
See No coolant flow
Temperature
display reads
incorrectly
Offset incorrectly set.
Reset temperature offset.
Recirculating
pressure is too
high
Pump internal pressure relief is
set too high.
Reset pressure relief to 60 psig.
Pressure drop through system is
too large.
Reduce line length or increase
line diameter.
Coolant
temperature too
cold.
Temperature setpoint is not set
properly.
Verify values in the controller,
including offset. Reset as
necessary.
