Omega Engineering CN 79000 manual Diagnostic Error Messages, Page 37 of, Fail, tESt, LorE

Models: CN 79000

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DIAGNOSTIC ERROR MESSAGES

DISPLAY

MEANING

 

SP OUTPUTS

ACTION REQUIRED

 

 

 

 

No

Display is blank. In-

Set point

Check that the power supply is

display

strument is not get-

outputs inactive

on, or that the external fuses

lighted

tingpower,orthesup-

Alarm inactive

aregood.

 

ply voltage is too low.

 

 

 

 

 

 

 

FAIL

Fail test

appears

Set point

The display alternates between

tESt

upon power up if the

outputs inactive

FAILtEStandoneofthefollow-

 

internal diagnostics

Alarm inactive

ingmessages:FACtdFLt:Mem-

 

detect a failure. This

 

orymaybecorrupted. Pressthe

 

message may occur

 

ENTER key and the DOWN

 

during operation if a

 

ARROW key to start the factory

 

failure is

detected.

 

defaultprocedure.Recheckcon-

 

Displays flash.

 

 

troller programming. rEtFACt:

 

 

 

 

 

 

Unrecoverable error, return to

 

 

 

 

 

 

factory for service.

 

 

 

 

 

 

CHEC SP1

This

message

will

Set point

Correct the SP1, SP2. or adjust

CHEC SP2

appear upon power

output(s)

the SPL1, SPL2, SPL2, or SPH2

up if SP1 is set out-

inactive

values by programming new

 

side of the SPL1/

Alarm active

values.

 

SPH1 values or SP2

 

 

 

is set outside

the

 

 

 

SPL2/SPH2 values.

 

 

 

 

 

 

 

 

CHEC SPL1

This

message

ap-

Set point

Correct the SPL1, SPH1, SPL2,

CHEC SPH1

pears at power up if

output(s)

or SPH2 values by program-

or

SPL or SPH values

inactive

ming new values.

CHEC SPL2

areprogrammedout-

Alarm inactive

 

CHEC SPH2

side the input range

 

 

 

ends.

 

 

 

 

 

 

 

 

 

 

 

CHEC

This

message

ap-

Set point

Restore the communications

LorE

pears

if

the Serial

outputs active

lineandswitchtheLorEtoLOC.

 

Communications

Alarm inactive

 

 

has timed out.

 

 

 

 

 

 

 

 

 

SEnC

Sensor

Rate

of

Set point

Check for the cause of the er-

 

Change

exceeded

output(s)

ror. The value setting may be

 

the programmed lim-

inactive.

too slow for the process, or the

 

its set for SEnC. Ap-

Alarm Active

sensor is intermittent. Correct

 

pears in display of

 

the problem and press INDEX

 

affected zone.

 

 

and ENTER to reset.

 

 

 

 

ArEA

This message appears

Set point

Correct the ambient tempera-

(Alternates

if the ambiient temper-

outputs active

ture conditions. Ventilate the

with PV

ature of the control is

Alarms active

area of the cabinet or check for

when near)

near or out of range or

 

clogged filters. If RJC broken,

 

RJC sensor is broken.

 

return to factory for service.

Page 37 of 40

Page 39
Image 39
Omega Engineering CN 79000 manual Diagnostic Error Messages, Page 37 of, Fail, tESt, LorE