MICROCOM
®
TEMPERATURE CONTROLLER
INSTRUCTION MANUAL
Pg.
www.incoe.com
©INCOE
®
CORPORATION 4/2010
Fault
Effects / Tool
Display
Protections
Solutions
Open
thermocouple
Temperature
decrease.
The standby screen
continuously displays the
message “otc”.
TRIAC command
disconnection and
stops heating.
Test the thermocouple
with an ohmmeter,
switch to manual mode.
“Pinched”
thermocouple.
Overheating.
The standby screen displays
the message “LoA” alter-
nately with temperature.
Fix the pinching or switch
to manual mode if you do
not have have time.
Reversed
thermocouple.
Temperature
Decrease.
The standby screen
permanently displays the
message “rtc”.
Check for proper wiring,
Switch to manual mode.
Temperature Varia-
tions.
The actual tempera-
ture is unstable.
The standby screen displays
the message “LoA” ou “HiA”
alternately with temperature.
Material problem.
Mould problem.
Heater
disconnected.
Temperature
Decrease.
Verify the connections
Change the cartridge.
Heater partially
disconnected.
The standby screen displays
the message “LoA” alternately
with temperature.
The actual temperature
drops on display.
H umidity too high : dry
the heater and if
necessary change it,
Change the 16A fuse.
Grounded Heater
The standby screen displays
the message “Otr” alternately
with temperature. The tem-
perature value decrease.
TRIAC command discon-
nection and stop of
heating 16A fuse blown.
Heater
Humidity too high : dry
the cartridge and if
necessary change it.
Triac shorted
Heater overheating.
The standby screen displays
the message “Str” alternately
with temperature. Tempera-
ture increasesing no control
even in Manual Mode.
TRIAC disconnected and
stops heating.
Send the controller to
INCOE for repair.
Fuses blowing 16A
in the fault zone.
The heater
located in the mold
does not heat.
The standby screen displays
the message “Otr” alternately
with temperature.
Temperature
setpoint decreases.
Change the faulty fuse.
The controller
heats
uncontrolable.
Triac Shorted
The standby screen displays
the message “HiA” alternately
with temperature.
Check Po value (percent-
age of power used) ,
If 99.9%, the controller
outout full power, Then
either the thermocouple
is in short-circuit, either
the heater is cut or poorly
connected,
Check all the wirings as
well as the resistance of
the heater.
The controller
does not light
when switching on
the cabinet.
No heating.
No displays.
No output to.
Check fuses located on
the controller circuit
board.
3
TROUBLE SHOOTING
11