Kodiak Recirculating Chiller Technical Manual
Manual # 820-0109, Rev. Y, 07/08/10
- 29 -
Check Lytron’s website
www.Lytron.com
for the most current technical information.
TROUBLE SHOOTING GUIDE
Problem
Possible Cause
Recommended Remedy
No power to the unit, circuit breaker "off"
or tripped.
Make sure the unit is plugged in. Verify
power to the unit.
Turn circuit breaker to the "ON" ( I )
position.
Turn on the unit with the ON ( I ) key on
the keypad.
Fault shutoff enabled.
Disable fault shutoff. Start unit. Enable
shutoff after it is running, if desired.
Low flow shut off will cause the chiller to
stop after 10 seconds.
Fill external line prior to start up.
Pump is not Primed – See Pg. 19.
Low Voltage.
Have a qualified electrician check the
electrical service to the unit.
Cooling load exceeds cooling capacity.
Reduce the cooling load on the unit.
Controller set point temperature is too
high.
Reset the set point to the proper
temperature.
Condenser coil fouled with dust or debris.
Remove the lower grill and vacuum the
coil face clean.
Unit has tripped the high-pressure cutout
(RC030, RC045 and water cooled units
only.) (See Pg. 38)
Remove air obstructions from around the
unit; manually reset the high-pressure
control (Inside rear of unit, this is a blue
button on a white box. Press to reset.)
Unit does not start
or shuts off shortly
after starting.
Compressor has tripped its internal
overload.
Let the unit cool. The overload will reset
itself, normally in 30 minutes or less.
Excessive noise on
startup
Liquid refrigerant in the suction line to the
compressor.
This should go away after the system
runs for a few minutes.
Excessive Pressure
in facility water
(water-cooled unit
only)
Unit has tripped the high-pressure cutout
(RC030, RC045 and water cooled units
only.) (See Pg. 38)
Manually reset the high-pressure control
inside rear of unit, this is a white plastic
button on the box. Press to reset.
Low voltage or wrong voltage to unit.
Verify power source; check electrical
service.
Noisy compressor
Unit stored in cool environment for a long
period may have collected liquid
refrigerant in the compressor.
This should go away after the system
runs for a few minutes.
Pump shaft seal damage
Replace pump.
Excessive pressure drop.
Use either larger hoses or a shorter line
length to reduce the pressure drop to
equipment to be cooled.
Noisy pump motor
Positive displacement pump is worn out.
Replace pump with new one. Contact
Lytron Service Department for part
number and pricing.
Improper voltage to the system.
Verify and correct the voltage to the
chiller.
Pump motor
overheats
Obstruction in pump head.
Shut down unit, clear obstructions and
restart unit.
Low level in reservoir
Add more fluid to reservoir to full mark.
Level switch is stuck.
Clean the reservoir and level switch.
Audible alarm stays
on (Control Package II
and III only)
Level switch is damaged.
Replace level switch.
