ThermoFlex-Manual.pdf - 第89页
Thermo Scientic ThermoFlex 7-1 Error Codes The controller can display Er ror Codes . If the chiller is still r unning press enter to see if the code clears , a limit may ha ve been only temporarily ex ceeded. If the chi…
6-8 ThermoFlex
Section 6
Thermo Scientific
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.