ThermoFlex-Manual.pdf - 第90页
Thermo Scientic ThermoFlex 7-2 Section 7 Er ror Code Reaction Cause Actions HiFLo Chiller reaction depends on ALr setting chosen in the Setup Loop , see Sec- tion 4. ( Chiller equipped with a ow transducer .) The proce…
Thermo Scientic ThermoFlex 7-1
Error Codes
The controller can display Error Codes. If the chiller is still running press enter to see if the code clears, a limit may have been only temporarily
exceeded. If the chiller shut down, the controller will continue to ash the error code. Press enter to clear the display and silence any alarm. You
can silence the alarm without clearing the code by pressing either the up or down arrow key. Once the cause of the shut down is identied and
corrected, start the chiller. If the cause was not corrected the error code will reappear. Contact our Sales, Service and Customer Support.
Section 7 Troubleshooting
Error Code Reaction Cause Actions
8888 (or
blank screen)
Chiller will not start. Software communication error.
• Cycle circuit protector on the rear of the chiller,
ThermoFlex900-10000 only.
Add
Chiller continues to run.
Auto rell, if installed,
shuts off.
The auto rell time chosen for the
customer adjustable ll setting in the
Setup Loop is set to 0 and the chiller is
congured to keep running, see
Section 4.
•Check for leaks.
•Check rEFil settings and adjust if necessary, see
Section 4.
• Add uid to the tank.
di
Chiller continues to run.
(Optional display)
The chiller operating time exceeded
Setup Loop di t alarm value. The
optional DI cartridge may need replacing.
• Check the Puralite sensor, see Section 6. If the light is
red change the cartridge, see Section 5.
• If the Puralite sensor is green, see Section 4 to revise
di t alarm value.
driP
Chiller will shut down.
(Optional display)
Fluid in drip pan (SEMI only). •Check for leaks.
•Remove the uid from the drip pan and reset the fault.
FLo-LoFLo
Chiller continues to run. The low ow alarm is set to 0.0 and the
pump ow rate is below the minimum
required, see Section 4.
•See LoFLo error code.
FLtrS
Chiller continues to run. Air and uid lters require preventive
maintenance/replacement.
• Check air and uid lters. If required, clean/change air
and uid lters, see Section 6.
• If your lters do not need cleaning, you may increase
the number of hours between preventive care
reminders. There are four levels, see Section 6.
Thermo Scientic ThermoFlex 7-2
Section 7
Error Code Reaction Cause Actions
HiFLo
Chiller reaction depends
on ALr setting chosen in
the Setup Loop, see Sec-
tion 4. (Chiller equipped
with a ow transducer.)
The process uid ow
rate has exceeded the
adjustable high ow
setting’s 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 HiFLo setting, see Section 4, and adjust setting if
necessary.
• Check all application and plumbing shut off valves for correct
position.
• Adjust ow if chiller is equipped with an optional ow control valve,
see Section 5.
• If ow transducer was recently calibrated double check calibration, see
Section 8.
Hi P1
Chiller reaction depends
on ALr setting chosen in
the Setup Loop, see Sec-
tion 4.
The pump’s high
discharge pressure
exceeded Setup Loop
high 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 Hi P1 setting, see Section 4.
• Check application valves and ensure that they have not changed or
closed. Note If routine shut-off of the process ow is required then
an external pressure relief valve should be added, see Section 5.
•May occur as a result of changing the internal DI cartridge.
Disconnecting the cartridge adds an additional 0.5 gpm to the main
ow. See Section 5.
•Check for debris in the application or external lters.
• Double check uid lines. Excessive bends, long tubing and diameter
reductions can affect the pump’s discharge pressure. Note If diameter
reductions must be made, they should be made at the inlet and outlet
of your application, not at the chiller.
Thermo Scientic ThermoFlex 7-3
Section 7
Error Code Reaction Cause Actions
Hi t
Chiller reaction depends 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 within
the factory-set high xed
temperature limit. However,
the error will reoccur if the
temperature goes below the
adjustable setting and then
again exceeds it.
The process uid
temperature exceeded
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 Hi t setting, see Section 4.
•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.
HPC
Chiller will shut down. High refrigeration
pressure.
Air-cooled chillers
• Ensure that the ambient temperature is not exceeding the recommended
range, see Section 3.
•Ensure chiller has adequate ventilation, see Section 3.
• Clean the air lter. Dirt and debris on the lter can prevent the lter
from functioning at full capacity, see Section 6.
•Bring cooler air in from another area or exhaust the hot air into another
location using an auxiliary fan.
Water-cooled chillers
•Ensure the plastic plugs were removed from the facility connections.
•Ensure facility water is on and connected.
•Check facility water ow rate and pressure.