Heidolph LABOROTA 4000 up to 4003 - Manual (Page 122)

Faults and troubleshooting
120 Laborota 4000/4001 efficient, 4010/4011 digital, 4002/4003 control 1.02
7 Faults and troubleshooting
Fault/Message Cause Remedy
Power cable not connected to an
AC outlet.
Plug power cable into an AC
outlet.
Instrument can not be switched
on.
Fuse defective Replace fuse (see chapter
8.2, page 124)
Main power switch turned off Turn on main power switch
Fuse defective Replace fuse (see chapter
8.2, page 124)
Main power switch defective Contact service
Heating bath connector cable is
not plugged in
(LABOROTA 4002 / 4003 control
only)
Plug in heating bath
connector cable
Heating bath heater defective Contact service
Set Bath temperature higher than
heating bath control
Use heating bath control to
set temperature 20°C higher
than Set Bath temperature
No heating function
Temperature limiter tripped If medium in heating bath: let
heating bath cool and reset
temperature limiter
If no medium in heating bath:
contact service
Main power switch defective Contact service
Speed control is set to left stop. Turn speed control to right
Drive defective Contact service
Drive does not turn
Fuse defective Replace fuse (see chapter
8.2, page 124)
Message in heating bath display:
Er1
Heating bath defective Contact service
Message in heating bath display:
Er2
Heating bath defective Contact service
Message in heating bath display:
Er3
Heating bath heated without
liquid heating medium
Switch instrument off
Check whether temperature
limiter has tripped. If so, reset
(see chapter 8.1.2, page 123)
Add liquid heating medium