User Manual

- Check if the fuse is broken or loose

• Fault in power on self test

- Power off the device and then restart

• Actual speed can’t reach the set value

- Media in high viscosity may probably cause abnormal

speed reduction of the motor

• The device can’t be powered off when switched off

- Check if the residual heat warning function is still on

and the hotplate temperature is above 50°C (LED still

works and “Hot” flashes)

Error codes

Error code

Error description Solutions

Solutions

Er1

Short circuit in the external

temperature sensor PT1000

Replace PT1000 and

re-start the device

Er2

Open circuit in the internal

temperature sensor PT1000

Re-start the device

Er3

Short circuit in the internal

temperature sensor PT1000

Re-start the device

Er4

Excessive temperature of the

device

Power off, and then

re-startthe device after

cooling down

Er5

Motor failure

Reduce the sample

If the instrument still can’t work properly, please contact

manufacturer/supplier for technical support.