RLC-
VU006A-E4
20
D
a
nost
c
Main Processor Diagnostic
ex
C
d
ia
nostic Nam
ffect
ar
et
Severit
er
i
tence
ctive M
des
Inactive Modes
Criteri
e
et
evel
9
:
eset
s
cc
rre
hiller
nf
nL
tch
l
The main
rocessor has successfull
come
ut of a reset and built its a
lication.
reset ma
have been due to a
ower u
,
installin
new software or confi
uration. This
dia
nostic is immediately and automatically
leared and thus can onl
be seen in the
istoric Dia
nostic List in TechView
em
te
B
Unex
ected Starter
Sh
t
wn
hiller
rm
nl
tch
ll Cprsr Runnin
modes, Startin
,
unnin
and
reparin
to
Sh
t
wn
The Starter module status re
orted back that
it is stopped when it should be runnin
and
no Starter dia
nostic exists. This dia
nostic
ill be lo
ed in the active buffer and then
le
re
.
ow Eva
orator
efri
erant
em
erature
hiller
mme
i
te
tch
ll Ckt Runnin
es
. The inferred Saturated Evap Refri
erant
Tem
erature
calculated from suction
ressure transducer
s
dro
ed below the
ow Refri
erant Temperature Cutout Setpoint
for 450°F-sec
10°F-sec max rate
while the
ircuit was runnin
after the i
nore period
had expired. The inte
ral is held at zero for
the 1 minute i
nore time followin
the circuit
tartup and the inte
ral will be limited to
never tri
in less than 45 seconds, i.e. the
rror term shall be clam
ed to 10°F. The
minimum LRTC set
oint is -5°F
18.7 Psia
the
oint at which oil se
arates from the
refri
erant. b. Durin
the timeout of the
trip inte
ral, the unload solenoid(s) of the
runnin
compressors on the circuit, shall be
ner
ized continuously and the load solenoid
hall be off. Normal load/unload o
eration
ill be resumed if the trip inte
ral is reset by
return to tem
s above the cutout set
oint.
em
te
9
w
il Fl
w
hiller
mme
i
te
tch
Chiller Ener
ized
n
Delt
P
ve
Psi
The oil
ressure was out of the acce
table
pressure ran
e for 15 seconds, while the
elta Pressure was
reater than 15 Psid.:
cceptable ran
e is 0.50 or 0.60 > (PC-Po) /
PC-PE
for the fi rst 2.5 minutes of o
eration,
nd 0.40 or 0.50 >
PC-Po
/
PC-PE
thereafter. The hi
her ratios used if the
stem DP is less than 23
sid
c
9
ss
f
il
t
om
ressor
(Runnin
)
hiller
mme
i
te
tch
t
rter
nt
ct
r
ner
ized
n runnin
modes , Oil Loss Level Sensor
detects lack of oil in the oil tank feedin
the
ompressor (distin
uishin
a liquid fl ow from
va
or fl ow
c
9D
ss
f
il
t
om
ressor
Sto
ed
hiller
mme
i
te
nd S
ecial
cti
n
tch
om
ressor Pre-
tart
all other
modes
il L
ss Level Sens
r
etects
l
ck
f
il in
the oil tank feedin
the compressor for 90
econds after EXV
re
osition is com
leted.
ote: Com
ressor start is dela
ed while
aitin
for oil to be detected.
c
A
w Differenti
l
efri
erant Pressure
hiller
mme
i
te
tch Chiller Ener
ized
The s
stem differential
ressure was either
below 15 Psid for more than 164 Psid-sec,
r
el
w 2
.
Psi
f
r
Psi
-sec. The
latter inte
ral’s value is not cleared for any
reason includin
dia
nostic trip, manual
reset, or power up reset (ie. Inte
ral is saved
nonvolatily on power down). The inte
ral will
decay while circuit is runnin
at a max rate
f –10 PSID, and while sto
ed at a rate o
0.4 PSID. This same inte
ral is associated
ith the operatin
mode “Compressor Cool
own”. Also see dia
nostic below
em
te
97
Differenti
l
efri
erant Pressure
hiller
mme
i
te
tch Chiller Ener
ized
The s
stem differential
ressure was below
7.7 Psid. The occurrence of this dia
nostic
ill saturate the above “Low Diff Rf
t Press
nte
ral and invoke the same “Compressor
Cool Down” o
mode.
em
te