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Error Message
Type
Indication
Corrective Action
BAD CAL
Warning
EXT SENSOR
Status
LOW FLOW
Warning
ADD FLUID
Warning
FILTER
Warning
BREAKERS
Failure
HIGH TEMP
Failure
HEAT
Status
HEAT (Flashing) Status
HEAT ENABLE
Status
Redo calibration of RTD until
values are acceptable.
None.
Assure that flow loops not
used are turned off. Check that
flow setpoints are correct.
Check for correct pump
operation. Check for flow
obstructions.
Check for leaks. Check for
improper sealing of the tank.
Add fluid.
Clean or replace filter, Perform
6 month PMI.
See Error Message.
Adjustable HTC: Increase HTC
setting and reset
Fixed Temp. HTC: Reset HTC
and check operation.
None.
None.
None.
Flashes BAD CAL for several
seconds after a calibration has
been performed outside of the
calibration zone allowed for a
standard RTD. Protects against
potential calibration errors.
Unit is controlling temp with a
remotely located RTD probe.
At least one of the flows is below
its alarm setpoint.
Fluid level is low in reservoir.
Six months since filter has been
cleaned or replaced. Counts as
long as controller has power.
Heater and/or pump breaker is
open.
Heater HTC tripped or malfunc-
tioned, the unit will not run.
Controller is asking for the heater
solid state relays to turn on.
Controller is maintaining temp
control within the proportional band
by asking the solid state relays to
turn on and off.
Controller is asking for the heater
contactor to turn on.
Continued on next page.
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