65
Model 4688-IR / Model 4679-IR
Operation & Maintenance Manual
Manual #087-0007G, 10/2003
Table 2.1 - Fault Code Descriptions
F A U L T
S ET BY
CL EA R ED B Y
P M E M
P aram eter m em ory
c hec k s um failure.
Cleared by re-entering the c orrec t S R .G N value
and then verify ing all other param eters in the
U S E R C O M M m enus . O perator s hould verify the
A 1.S P and A 2.S P (alarm s etpoints ) at a m inim um .
LM E M
Loop c alibration data
c hec k s um failure.
Cleared by adjus ting either the M A .04 and M A .20
in C O M M m enu. O perator s hould adjus t both
s ettings if c urrent loop output is being us ed.
E M E M
S ens or E E P R O M
c hec k s um fault.
Cleared by returning the entire trans m itter to the
fac tory .
P W R
S upply voltage drops to
c ritic al level.
S elf-c leared after 4 s ec onds of adequate s upply
voltage.
LC D
LC D dis play bus fault.
S hop/fac tory repair.
C LK
R eal Tim e C loc k I2C bus
fault.
S hop/fac tory repair.
E E
S ens or E E P R O M I2C
bus fault.
R em ove power to unit. O pen hous ing and c hec k
s ens or c onnec tions to power s upply board.
R eplac e entire s ens or if nec es s ary .
LO O P
4-20m A c urrent loop
output open.
R epair c onnec tion.
TE S T
U s ed for tes ting fault
relay operation. A L.TO
(alarm tes t override) s ee
A larm R elay param eters
C lear by returning A L.TA to 0.
H TR
H eater c urrent to s ens or
below 50m A .
R em ove rains hield (or flow c ell) and c hec k w ires to
heater. If fault c ondition pers is ts , c ontac t fac tory
for repair.
dF .x .1
O R
dF .1.x
S ignal peak too high.
dF .x .2
O R
dF .2.x
S ignal peak too low .
dF .x .3
O R
dF .3.x
S ignal peak -peak too
high.
dF .x .4
O R
dF .4.x
S ignal peak -peak too low .
M ay be due to a dirty m irror. P erform c leaning
proc edure (s ee "
P eriodic Maintenanc e:C leaning
m irror as s y
" ) If fault c ondition pers is ts , c ontac t
fac tory for repair.
S EN S O R F A U L T CO D ES
C ould be c aus ed by a c ondens ation on the m irror.
D ry the m irror us ing c om pres s ed air. If fault
c ondition pers is ts , c ontac t fac tory for repair.
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