Specifications

12
PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION
Door switch does not cut power to
heating elements.
Door switch is not functioning. Re-align or replace door safety
switch.
Repeated element burnout. Heating harmful materials.
Wrong element.
Oxidized thermocouple.
Contamination present from
previous burnout.
Wired improperly.
Clean up spills in and on chamber.
Ventilate chamber by leaving top
vent slightly open when heating
known harmful reagents.
Install proper element.
Replace thermocouple.
Clean and/or replace insulation
material.
Check wiring diagram for correct
wiring of your furnace.
Inaccurate temperature readout. Oxidized or contaminated
thermocouple.
Poor thermocouple connection.
Solid state relay malfunction.
Improper loading procedures.
Poor ventilation of base.
Control out of calibration.
Thermocouple connections
reversed.
P.I.D. values invalid.
Control malfunction. “EE FAIL” will
be displayed on screen.
Replace thermocouple.
Tighten connections.
Replace solid state relay.
Use proper loading procedures.
Clear area around furnace base.
Contact Barnstead/Thermolyne.
Reconnect thermocouple correctly.
Re-tune control.
Verify and correct all parameter and
configuration values. If “EE FAIL”
persists, replace control.