Literature Order Number
SS-SVF15A-EN
Date
August 2009
Supersedes New
The manufacturer has a policy of continuous product and product data improvement and reserves
the right to change design and specifications without notice. Only qualified technicians should
perform the installation and servicing of equipment referred to in this literature.
Troubleshooting
SYSTEM FAULTS
PO
WE
R S
U
P
P
L
Y
HIGH VOLTAGE WIRING
CO
M
P
R.
IO
L
R
U
N CAP
A
CITO
R
CONTACTOR
CONTACTS
LOW VOLTAGE WIRING
CO
NT
RO
L
T
RAN
SF
O
RM
E
R
CO
NT
AC
T
O
R
C
O
IL
IN
E
FFIC
IENT COM
P
RESSO
R
REFR
IGERA
NT UN
DERC
HAR
G
E
REF
R
IG
ERA
N
T OV
ERCH
A
R
GE
E
X
C
E
SSIV
E EVAP
. LOAD
NONCON
DENSABL
E
S
RESTRIC
T
ED O.D.
AIRFL
O
W
O.D
. AIR R
E
CIRC
UL
ATION
T
XV S
T
UC
K OPE
N
SU
PERH
EAT
RESTRIC
T
ED I.D
.
AIRFL
O
W
REF. CIRC
U
IT RESTRIC
T
IONS
REFRIGERANT CIRCUIT
Head Pressure Too High
P
S
P
S
S
Head Pressure Too Low
S
P
S
S
S
Suction Pressure Too High
S
P
P
S
P
Suction Pressure Too Low
S
S
P
S
Liquid Refrig. Floodback (TXV System)
P
S
S
I.D. Coil Frosting
P
S
Compressor Runs Inadequate or No Cooling
S
P
P
S
S
P
S
ELECTRICAL
Compressor & O.D. Fan Do Not Start
P
P
S
P
P
Compr. Will Not Start But O.D. Fan Runs
P
S
S
O.D. Fan Won't Start
P
P
S
Compressor Hums But Won't Start
P
S
Compressor Cycles on IOL
P
S
S
S
P
P
S
S
S
P
S
I.D. Blower Won't Start
P
S
S
P
P
Primary Causes
S
Secondary Causes
