Faults and error messages
Version 5.0 - 10/2018
Operating Manual Sintering Oven HTS-2/M/Zirkon-120
Page 47
Error messages in the electronics
Fault
Possible cause
Troubleshooting
Respon-
sibility
Display: “Sensor defec-
tive”
Defective thermocouple
Replace thermocouple
Service
Department
Loose thermocouple
connections
Retighten thermocouple connections
Display: “ <-> -”
Oven inside tempera-
ture is much colder than
room temperature
Open oven door to allow the inside of
the chamber to reach room tempera-
ture.
User
Thermocouple connect-
ed incorrectly/wrong
polarity
Replace thermocouple connections
Service
Department
Display: “Safety shut-
down”
Oven temperature is
above 1650 °C
Switch off oven and allow to cool
down. Inform Service if the fault occurs
again.
User
Display: “Sensor
short-circuit”
Temperature sensor
defective
Call Customer Service
Service
Department
Display: “Thyristor defec-
tive”
Defect in the electronics Call Customer Service
Service
Department
Long acoustic signal
without LCD display,
oven door does not
close, program does not
start
Calibration of the door
switch not correct
Call Customer Service
Service
Department
