Heidolph Hei-CHILL, Operating Manual

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Troubleshootimg
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Troubleshooting
Malfunctions and troubleshooting
Alarms are relevant to safety. The device will be switched to standby operation.
▪ The red warning LED flashes.
▪ A short acoustic signal will sound rhythmically around 5 minutes after the start of the
fault.
Alarm Possible cause Remedy
Fill level for thermal
fluid below minimum
level
▪ Switch off the device
▪ Refill thermal fluid
▪ If necessary, check leak
tightness of connections
Pump is blocked. ▪ Switch off the device
▪ Reduce the viscosity of the
thermal fluid
▪ Remove any possible
contamination of the thermal
fluid
The temperature of the
electronics is higher
than 75 °C.
▪ Switch off the device and
allow it to cool down
▪ Check the air intake and
outlet for free circulation of
air
▪ If necessary, reduce the
application requirements to
match the cooling output
Warnings are not relevant to safety. The device continues to operate.
A prolonged acoustic signal will sound that is then repeated periodically.
Warnings Possible cause Remedy
Fill level for thermal
fluid below minimum
level
▪ Switch off the device
▪ Refill thermal fluid
▪ If necessary, check leak
tightness of connections
Upper tempera -
ture limit has been
exceeded
▪ Switch off the device
▪ Check if the application is
generating heat
▪ Check the setpoint
Temperature has fallen
below lower limit
▪ Switch off the device
▪ Check cooling application
▪ Check the setpoint
➜ After resolving the cause of the fault, restart the device and press the confirmation
button.
✓ The warning or alarm has been resolved.
Error : If the fault occurs again after restarting the device or you receive the error
message “EXXX”, note down the message shown on the display and contact Heidolph
Instruments or your local Heidolph Instruments dealer.