16
Trouble Shooting
Fault
Possible cause
Remedy
Unit does not heat up; LED display
temperature dark
turning knob temperature in
position „0“
switch on turning knob temperature
Unit is switched off
Switch on unit at on/off key
Faulty electronics
Return unit to supplier or
manufacture
No heating; LED display
temperature is blinking rapidly =
fault indication heating
Faulty electronics
Switch unit off and on; if fault occurs
again; return unit to supplier or
manufacture
Heating period not satisfactory
Loss of heating energy
Use cover
No revolution of cleaning liquid
e.g. switch on ultrasound
Unit produces boiling noise during
heating up
No revolution of cleaning liquid
e.g. switch on ultrasound
Set temperature is exceeded
Temperature sensor does not
measure the average temperature
(no revolution)
Revolve liquid by hand or by means
of ultrasound
Set temperature too low, ultrasonic
energy heats up the liquid more
than required (physical process)
For low set temperatures do not
switch on heating
Switch on ultrasound for short
periods only
No operation functions; displays of
LED ultrasound and LERD
temperature are blinking rapidly =
fault indication program control
Faulty electronics
Switch unit off and on if fault occurs
again; return unit to supplier or
manufacturer