Phenomenon5:
Temperature display window display “Er-1”,ALM1 identifier light.
Reason:
Bath tank temperature sensor measurement of short circuit or open circuit.
Exclude:
Check sensor and connection.

Phenomenon6:
Temperature display window display “Er-2”,ALM1 identifier light.
Reason:
Bath tank protection sensor short circuit or open circuit.
Exclude:
Check sensor and connection.
Phenomenon7:
Temperature display window display “Er-3”,ALM1 identifier light.
Reason:
Bath tank protection sensor exceeds the set value.
Exclude:
Reset power switch.

Phenomenon8:
Speed display window display “ALM2”,Er-1 idenfitier light.
Speed display window display “ALM2”,Er-2 idenfitier light.
Speed display window display “ALM2”,Er-3 idenfitier light.
Reason:
Power module fault.
Motor Locked Rotor.
Holzer logic error.
Exclude:
Take off the rotary bottle,no-load operation,if the fault is still not removed,please stop using it immediately,and contact the company.
Phenomenon9:
Speed display window display “ALM2”,Er-4 idenfitier light.
Speed display window display “ALM2”,Er-5 idenfitier light.
Reason:
Bus voltage under voltage.
Bus voltage overvoltage.
Exclude:
Check the value of the power supply voltage.

Phenomenon10:
Speed display window display “ALM2”,Er-6 identifier light.
Reason:
Serial communication fault.
Exclude:
Stop using it immediately,and contact the company.

If you have problems with the R series rotary evaporators(include:R-1005 5l rotovap ,R-1010 10L rotovap machine ,R-1020 20L short path distillation rotary evaporator ,R-1050 50 liter rotary evaporator), please read the instructions or contact us.