Watlow MINICHEF 2000 - Manual (Page 41)

Tr o u b l e s h o o t i n g C h a r t
4 0 ■ Wa t l o w M I N I C H E F 2 0 0 0 H a r d w a r e & S o f t w a r e S e t u p G u i d e
Operations
Note: See definitions of temperature alarms on page 55.
• Verify the correct software
Application Number is programmed.
Access WatHelp Diagnostics and
make note of [APPL`] parameter
value.
• Refer to programming guide.
• Consult factory.
• Controller programmed incorrectly
for application.
• Factory applied wrong faceplate
overlay to system.
• Operator error.
• Defective key switch.
Keys seem to function dif-
ferently than expected.
• Turn power off, then on to clear the
temporary error.
• If error persists, return to factory.
• Temporary error.
• Controller is defective. Scrambled display
• To silence the alarm, press the key
indicated by the flashing light.
• To select alternative Audible Alarm
sounds and duration, change value
of [Sound] parameter to meet the
application requirements. See pro-
gramming guide.
• Consult factory.
• Operator error.
• [Sound] parameter is set to
[````5].
• Controller requires reprogramming.
Alarm sound is on too long
or runs continuously at
the end of a Menu cycle.
Different Alarm sound or
duration is desired at the
end of a Menu cycle.
Press Menu key or Start/Stop key
for 2 seconds. Operator error. Cannot stop an active
menu.
• Access modes when controller is in
an idle state. User can cancel an
active menu in order to gain access
to these modes.
• Refer to programming guide for pro-
cedure to access the Menu
Programming Mode, the
Configuration Mode and for setting
the Real-time Clock time.
• Controller is currently running a
menu.
• Operator error.
• Controller does not have the Real-
time Clock option.
• Operator cannot access
Menu Programming
Mode.
• Operator cannot access
Configuration Mode.
• Operator cannot set Real-
time Clock time.
• Determine if High or Low Deviation
Alarms are required for channel 2.
If neither are required, access the
[AL``2] parameter and set the
value to disable the deviation
alarms, choosing [`nonE] or
[`Proc]. Refer to programming
guide.
• If Deviation Alarms for channel 2
are required, confirm that the
[ALdL2] parameter is set to the
proper value for the application.
• The Offset parameter can affect the
alarm point. Confirm that the
[OFSt2] parameter is set properly.
• System may require service.
Deviation Alarm indicating a low
temperature condition for channel
2.
• Channel 2 sensor measures a low
temperature that exceeds the allow-
able deviation below the pro-
grammed setpoint.
[`LO`2] appears on the
display.
System seems to be under-
heating.
Possible Solutions Possible Causes Symptom/Indication