Troubleshooting
Problem Possible
Cause
Remedy
Alternating overheating
Check connectors and increase size if necessary. If there
and overcooling or
are a large number of hoses and/or they are long, try to
rapid cycling from heat
Poor water flow
short hose runs and use as large of a hose as possible to
to cool
minimize water circuit pressure drop. If quick disconnects
with check valves have been used, remove the check
valves to reduce pressure drop through water circuit.
Poor connection or failure
Check connection, replace if necessary.
of thermocouple
Failure of the microprocessor
Replace controller.
Unable to heat properly
Flush out the solenoid valve by adjusting the Set Point up
Solenoid valve is stuck in
and down several times to open and close the solenoid
the open position
valve. If this does not work, stop the unit and turn off the
electric power and water and take the solenoid valve apart
for cleaning or replacement.
Leaking connection and/or
Check for leaks and replace any faulty valves.
the manual pressure relief
valve is in an open condition
Immersion heater is inoperative
Have a qualified electrician check to see if the heater
and/or heater contactor are functioning correctly and
replace any defective components.
Microprocessor controller failure
Replace controller..
Failure of thermocouple
Replace thermocouple
Failure of heater
Replace heater..
Failure of heater contactor
Replace heater contactor
Unable to cool properly
Cooling water supply is not
Check to make sure the cooling water supply is of
sufficient
sufficient temperature, volume and pressure for the unit.
Drain (cooling water return line)
Check the drain (cooling water return line) to ensure there
is not sufficient
is no restriction preventing cooling water flow to the drain
(cooling water return line).
Check the drain (cooling water return line) and see if you
Solenoid valve is inoperative
can feel or hear a change in the flow as the solenoid valve
opens and closes. If you can not hear or feel the flow it is
likely the solenoid valve has failed. Replace solenoid valve
if necessary.
Plugged heat exchanger (only
on models with heat exchanger
Clean or replace heat exchanger.
option)
High backpressure in the cooling
Reduce backpressure. Call our Tech Service Department
water system
for assistance on selecting a pressure-regulating valve.
Heater failure
Unit not filled with water
Fill unit with water.
Faulty heater
Replace heater
Plugged heater tube/flow restriction
Clear obstruction
© Copyright 2010 IMS Company. All rights reserved.
An ISO 9001:2008 Registered Quality Company
16
