Carrier 38VTA040, Installation, Start-Up And Service Instructions Manual

Page: 10 / 12

10
TROUBLE-SHOOTING CHART - COOLING CYCLE
NO COOLING OR IN-
SUFFICIENT COOLING
COMPRESSOR RUNS
BUT CYCLES ON
INTERNAL OVERLOAD
COMPRESSOR WILL NOT RUN
CONT
ACT
OR OPEN
COMPRESSOR POWER
SUPPL
Y
OPEN
CONT
ACT
OR CLOSED
LOOSE LEADS
AT
COMPRESSOR
OPEN SHOR
TED OR
GROUNDED COMPRESSOR
MOT
OR WINDINGS
COMPRESSOR
INTERNAL
PROTECTION OPEN
COMPRESSOR STUCK
RESTRICTED
DISCHARGE LINE
OUTDOOR F
AN
ST
OPPED OR CYCLING
ON OVERLOAD
OUTDOOR
AIR
RESTRICTED OR RECIRCULA
TING
OVERCHARGE OR
NONCONDENSABLES
IN SYSTEM
LINE VOL
TAGE
T
OO HIGH OR LOW
COMPRESSOR
BEARINGS
LOW REFRIGERANT
CHARGE
HIGH SUPERHEA
T
LOOSE LEAD
AT
FAN MOT
OR
MOT
OR DEFECTIVE
INCORRECT
OUTDOOR F
AN MOT
OR
CAP
ACIT
O
R
LOW SUCTION
PRESSURE
DIR
TY
AIR
FIL
TERS
DUCT RESTRICTED
DAMPERS P
AR
TL
Y
CLOSED
INDOOR COIL
FROSTED
SLIGHTL
Y
LOW OR
REFRIGERANT
LIQUID LINE SLIGHTL
Y
RESTRICTED
METERING DEVICE
RESTRICTED
INCORRECT
METERING DEVICE
INDOOR COIL
STRAINER RESTRICTED
COMPRESSOR RUNS
BUT INSUFFICIENT
COOLING
HIGH SUCTION
LOW HEAD PRESSURE
DEFECTIVE
COMPRESSOR V
AL
VES
INTERNAL PRESSURE
RELIEF OPEN
HIGH SUCTION
LOW SUPERHEA
T
INCORRECT
METERING DEVICE
UNIT OVERCHARGED
FAUL
TY
POWER
SUPPL
Y
OPEN CONTROL
CIRCUIT
CONT
ACT
OR OR
COIL DEFECTIVE
LOOSE ELECTRICAL
CONNECTION
INTERNAL
OVERLOAD OPEN