Carrier SUPRA 950Mt - Standby Motor Malfunction

5-7
I
N
D
I
C
A
T
I
O
N
/
T
R
O
U
B
L
E
P
O
S
S
I
B
L
E
C
A
U
S
E
S
 REFERENCE
SECTION
5.4
ST
AN
DB
Y
MOT
OR
MAL
FUN
CTI
ON
Sta
nd
by
mo
to
r
fai
ls
to
sta
rt
Mo
tor
co
nta
cto
r
(MC
)
de
fec
tiv
e
Motor Overload (OL) open
Improper power supply
Oil pressure switch (OPS) open
Selector switch (SSW) defective
Replace
Replace motor
2.5
Replace
Stan
dby m
oto
r star
ts, the
n sto
ps
Moto
r Over
loa
d (OL) o
pen
High amperage draw
2.5
Check