Watlow MINICHEF 2000 Bedienungsanleitung PDF herunterladen (Seite 43)

Troubleshooting Chart

• Press the HOME key for 2 seconds.

• Or, repeatedly press the ENTER key

to exit and return to the normal

operating mode.

Operator error.Operator cannot get out of

Configuration Mode or

Menu Programming

Mode.

• Refer to Troubleshooting section on

Error Messages.

• Confirm that compatible sensors are

used in the system. Refer to con-

troller specifications.

• Check system wiring.

• Check system sensors.

• Confirm that a maximum of 1

grounded thermocouple is used in

the system.

• Confirm that compatible thermocou-

ple wires/extension wires are used

in the system.

• Verify that the programmed thermo-

couple curve matches the sensor

specification (see [tc```] parame-

ter setting.

• Verify that the programmed RTD

curve matches the sensor specifica-

tion (see [Rtd``] parameter set-

ting)

• Use WatHelp Diagnostics parameter

[tENP1] and [tENP2] to confirm

actual temperatures sensed on

channel 1 and 2.

Malfunctioning temperature sensors.

• [OFSt1] or [OFSt2] parameter

may be set incorrectly.

• System may have two grounded

thermocouple sensors, causing

ground loops.

• Loose or improper connections.

• Reversed sensor lead-wires.

• Sensor not compatible with control.

• Control not programmed properly.

Inaccurate temperatures

Set the [A_Loc] parameter to

[```no].

Application Number Security has

been set.

Software Application

Number cannot be

changed.

Set the [Loc``] parameter to

[```no].

Menu Program Security has been set.Operator cannot reprogram

Menus.

To secure the Application Number, set

the [A_Loc] parameter to

[``YES].

Application Number Security has not

been set.

Software Application

Numbers are being

changed or tampered

with.

To secure the Menu programs, set the

[Loc``] parameter to [``YES].

Menu Program Security has not been

set.

Programmed Menus are

being changed or tam-

pered with.

• Refer to programming guide to reset

the time of day.

• If problem persists, return to factory.

• Real-time Clock is not programmed

properly.

• Battery is low.

Time of day is inaccurate

Possible SolutionsPossible CausesSymptom/Indication

42 ■ Watlow MINIC HEF 2000 Hardware & Software Setup Guide

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