Section VIII - Troubleshooting
Failure to Start:
P
ower
not
turned
“on”
B
lown
control
circuit
fuse
s
afety
circuit
shutdown
resulting
from
high
discharge
air
temPerature
t
hermal
overload
relays
triPPing
l
ow
voltage
f
aulty
start
switch
P
ower
failure
l
oose
wire
connections
f
aulty
control
relay
f
aulty
h
igh
a
ir
t
emPerature
(hat) s
witch
f
aulty
transformer
Unscheduled Shutdown:
h
igh
discharge
air
temPerature
t
hermal
motor
overload
relays
triPPing
P
ower
failure
l
oose
wire
connections
t
urn
the
Power
“on”
By
closing
the
main
disconnect
switch
or
circuit
Breaker
.
r
ePlace
fuse
. f
ind
and
correct
cause
.
c
orrect
the
situation
in
accordance
with
the
instruction
in
the
“h
igh
d
ischarge
a
ir
t
emPerature
”
section
of
this
trouBleshooting
guide
. r
estart
the
comPressor
.
c
orrect
the
cause
of
the
overloaded
condition
,
reset
overload
relay
and
Press
the
start
Button
.
a
sk
the
Power
comPany
to
make
a
voltage
check
at
your
entrance
meter
,
then
comPare
that
reading
to
a
reading
taken
at
the
motor
terminals
. u
se
these
two
readings
as
a
Basis
for
locating
the
source
of
low
voltage
.
c
heck
the
switch
for
malfunction
or
loose
connections
.
c
heck
Power
suPPly
to
the
unit
.
c
heck
all
wiring
terminals
for
contact
and
tightness
.
r
ePlace
the
relay
.
c
heck
hat
switch
. c
ontact
a
qualified
service
technician
for
rePairs
.
c
heck
secondary
voltage
on
transformer
.
c
orrect
the
situation
in
accordance
with
the
instruction
in
the
“h
igh
d
ischarge
a
ir
t
emPerature
”
section
of
this
trouBleshooting
guide
. r
estart
the
comPressor
.
c
orrect
the
cause
of
the
motor
overloaded
condition
,
reset
the
overload
relay
and
Press
the
reset
Button
.
c
heck
Power
suPPly
and
transformer
fuses
.
c
heck
all
wiring
terminals
for
contact
and
tightness
.
70
Quincy Compressor-QGB
™
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