Watlow MINICHEF 2000 Manual de usuario descargar pdf (Pagina 41)

Troubleshooting Chart

40 ■ Watlow MINIC HEF 2000 Hardware & Software Setup Guide

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

• 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 SolutionsPossible CausesSymptom/Indication

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