ThermoFlex-Manual - 第94页
Thermo Scientic ThermoFlex 7-6 Section 7 Er ror Code Reaction Cause Actions rEFiL Auto rell will shut off . Chiller reaction depends on ALr setting chosen in the Setup Loop , see Sec- tion 4. Auto rell will shut off .…
Thermo Scientic ThermoFlex 7-5
Section 7
Error Code Reaction Cause Actions
Lo t
Chiller reaction de-
pends on ALr setting
chosen in the Setup
Loop, see Section 4.
Note If the chiller
does shut down it can
be restarted provided
the temperature is still
above the factory-set
low xed temperature
limit. However, the
error will reoccur if
the temperature goes
above the adjustable
setting and then again
drops below it.
Process uid temperature is
below Setup Loop alarm value.
•If the chiller is still running press enter to see if the code clears, the
limit may have been only temporarily exceeded.
•Verify your Lo t setting, see Section 4.
• Ensure that the ambient temperature is not below the recommended
low-range, see Section 3. If your application load is constant and/
or the lower temperature can be temporarily tolerated, then continue
operation. (The ThermoFlex will control setpoint when sufcient heat
is added.)
•Verify/adjust controller PID values.
• Add insulation to external plumbing lines to reduce the heat-loss to the
environment.
•For water-cooled chillers check facility water temperature.
o FLo
Chiller will shut
down.
There is an overow condition
in the reservoir.
•Ensure the reservoir was not lled above the MAX LEVEL line.
•Check for clogged reservoir lter.
oL
Chiller will shut
down.
(Chillers equipped
with 3-Ф pump
motor overload.)
Pump motor overload activated.
Pump motor exposed to
excessive current due to high
pressure, ow or ambient
temperature.
•Allow pump to cool down.
oL 2
Chiller will shut
down.
(Chillers equipped
with 3-Ф fan.)
Fan motor overload activated. •Allow chiller to cool down.
•For air-cooled chillers, clean the air lter
PHEr
Chiller will shut
down. (3-Ф chiller
only)
Phase rotation is wrong.
• Disconnect chiller from power source and reverse any two line
conductors on the line side of the main circuit breaker.
Thermo Scientic ThermoFlex 7-6
Section 7
Error Code Reaction Cause Actions
rEFiL
Auto rell will shut off.
Chiller reaction depends
on ALr setting chosen in
the Setup Loop, see Sec-
tion 4.
Auto rell will shut off.
Chiller will continue to
run.
(Optional display.)
The uid level did not reach
the minimum operating level
within the time chosen for the
customer adjustable ll setting,
chosen in the Setup Loop, see
Section 4.
The auto rell successfully lled
within the time frame chosen
for the customer adjustable ll
setting, but the chiller tried to
rell 5 times in 40 hours.
•Check auto rell connection.
•Check for leaks.
• Check the supply pressure on the auto rell supply line. With low
pressure the auto rell time span setting may be set too low and
the reservoir does not have time to ll.
•Check rEFil settings and adjust if necessary, see Section 4.
SEr 1
Chiller will continue to
run.
Periodic service may be required. •To clear the message see Section 8.
Er 4
Chiller will not start. Normal if new software installed
and all values in the Setup
and Tune Loops were reset to
factory defaults.
•Clear the error code.
Er 15
Chiller will continue to
run.
(Chiller equipped with
serial communications.)
Momentary disruption of the
internal communications to
control board.
•Clear the error code
Check the serial communication connection.
•See serial communication connections in Appendix D.
Er 16
Chiller continues to run. Bad sensor calibration detected
several seconds after performing
a calibration.
•Redo calibration, see Section 8.
Thermo Scientic ThermoFlex 7-7
Section 7
Error
Code
Reaction Cause Actions
Er 22
This error code has
priority over H iT.
Chiller will shut down.
Note Chiller will not
restart until process
uid temperature is
below +43°C.
Reservoir uid temperature
exceeded the factory preset
value of +43°C.
•Ensure the chiller meets all environmental requirements, see Section 3.
• Clean the air lter. Dirt and debris on the lter can prevent the
chiller from functioning at full capacity, see Section 6.
• Ensure that the heat load being applied to the chiller is not too high.
Contact Thermo Fisher for assistance on calculating heat loads.
•Bring cooler air in from another area or exhaust the hot air into
another location using an auxiliary fan.
•Verify/adjust controller PID values, see the end of this section.
Er 23
Chiller will shut down. Refrigeration temperature
sensor shorted.
•Contact our Sales, Service and Customer Support.
Er 24
Chiller will shut down. Refrigeration temperature
sensor open.
•Contact our Sales, Service and Customer Support.
Er 25
Chiller will shut down. Internal temperature sensor
shorted.
•Contact our Sales, Service and Customer Support.
Er 26
Chiller will shut down. Internal temperature sensor
open.
•Contact our Sales, Service and Customer Support.
Er 28
Chiller continues to
run.
The process uid resistivity
exceeded the lower adjustable
value.
•Press enter to see if the code clears, the limit may have been only
temporarily exceeded.
•Verify controller’s settings, see Section 4
•Replace process uid.
Er 30
Chiller continues to
run.
The process uid resistivity
exceeded the higher
adjustable value.
•Press enter to see if the code clears, the limit may have been only
temporarily exceeded.
•Verify controller’s settings, see Section 4
•Replace process uid.
Er 32
Chiller will shut down. Refrigeration suction gas
temperature exceeded 50°C.
•Make sure supply voltage matches the chiller’s nameplate rating ±10%.