Technical data

Code 04

Excess temperature “ice condenser”. Temperature

“ice condenser” is 65°C or more! Freeze Dryer was

switched into Standby.

This error occurs when the temperature of the ice condenser

exceeds +65°C. At the same time, all active units are switched off,

i.e. the system is automatically switched to standby mode. The

error message may occur when the temperature of the ice

condenser exceeds +65°C when defrosting the system. The

refrigeration unit is switched off in order to avoid an operation or a

start at too high temperatures. The unit cannot be reactivated until

the ice condenser temperature is lower than +65°C and after

confirmation of the error message.

Code 21

See chapter 5.6.1.

Code 22

See chapter 5.6.1.

Code 23

AC power failure

A power failure is detected if the voltage supply is interrupted

under operating conditions (running mode). The process is

resumed when the voltage supply is available again.

Code 24

See chapter 5.6.1.

Code 25

See chapter 5.6.1.

Code 26

See chapter 5.6.1.

Code 27

Note: Invalid Control System

Please contact our service department!

Code 28

Note: Invalid System Module

Please contact our service department!

Operating Manual Freeze Dryer ALPHA 1-4 LSC / ALPHA 2-4 LSC Troubleshooting • 77