Instruction manual

Pg. 35
www.incoe.com
©INCOE® CORPORATION 8/2010
3
M SERIES
INSTRUCTION MANUAL
TROUBLESHOOTING
Fault Effects / tool   Solutions
Thermocouple
broken
Decreasing
temperature.
THC with alarm sign
displayed on screen.
- Alarm for deviation
low activated.
- Command of TRIAC
is cut and there is no
power to the heater
-Repair break after testing
thermocouple with ohm-meter.
- Switch to manual mode if
repair is too long or if you did
not activate sensor slaving for
operating with the sensor of
another similar zone (see p21
confirm).
- The icon is displayed to
confirm that another sensor is
used.
Thermocouple
pinched
Overheating Temperature is
constant but lower
than required
setpoint. The
deviation being low,
the following icon is
displayed:
with alarm sign
displayed on screen.
-Alarm for deviation
low activated.
- Repair pinched T/C
- Switch to manual mode if
repair is too long or if you did
not activate sensor slaving for
operating with the sensor of
another similar zone (see p21
confirm).
- The icon
is displayed to confirm that
another sensor is used.
Thermocouple
reversed
Decreasing
temperature.
THI with alarm sign
displayed on screen..
- Alarm for deviation
low activated.
- Revert polarity
Heater open Decreasing
temperature.
The Symbol
appear on screen on
relevant zone and
alarm sign displayed
on screen
- Alarm for deviation
low activated.
- Check connections.
- Replace heater.
Heater partly
open
Decreasing
temperature.
Displayed actual
temperature drops
Power indication
different from
the one normally
expected.
- Alarm for deviation
low activated.
- Percentage of
output power
increases.
- Check connections.
- Replace heater
Heater shorted to
ground
Decreasing
temperature.
Corresponding
power control card
is cut on faulty zone.
Symbol
is displayed on
screen with a
blinking alarm sign.
Power applied is
increasing.
- Deviation low or
high is activated.
- Fuse GRB 16A for
16A control cards
or fuse FA 6,3A for
5A control cards is
blown.
- Too high moisture : dry out
heater and replace if necessary.
- Cabinet is switched on,
remove upper cover and check
faulty fuses with LED indicators.
Cabinet is switched off, replace
fuses where the indicator was lit.
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3.1 TABLE OF POSSIBLE FAULTS