Ingersoll-Rand 4TCA4048A1000A, Service Facts

Page: 10 / 12

10 4TCA4048A-SF-1B-EN
Troubleshooting Chart
P-PRIMARY CAUSES / S-SECONDARY CAUSES
SYSTEM FAULTS
Power
Supply
High
Voltage
Wiring
Compr.
I0L
Run
Capacitor
Start
capacitor
Start
Relay
Contactor
Contacts
Low
Voltage
Wiring
Control
Transformer
Contactor
Coil
Low
Voltage
Fuse
Stuck
Compressor
Ineffecient
Compressor
Refrigerant
Undercharge
Refrigerant
Overcharge
Excessive
Evap.
Load
Noncondensables
Restricted
O.D.
Airflow
O.D.
Air
Recirculation
TXV
Stuck
Open
Low
Superheat
High
Superheat
Restricted
I.D.
Airflow
Ref.
Circuit
Restrictions
REFRIGERANT CIRCUIT
Liquid Pressure
too High
P S P S S
Liquid Pressure
too Low
S P S S S
Suction Pressure
too High
S P P S S
Suction Pressure
too Low
S S P S
Liquid Refrigerant
Floodback
(TXV System)
S S P
I.D. Coil Frosting
P S P S
Compressor Runs
Inadequate or
No Cooling
S P P S S S S P S
ELECTRICAL
Compressor &
O.D. Fan Do Not
Start
P P S S P P P
Compressor will not
Start but
O.D. Fan Runs
P S P P P S
O.D. Fan will
Not Start
P P
Compressor Hums
but will
Not Start
P P P P S S
Compressor Cycles
on IOL
P S P P P S P S P S S S S S S S
I.D. Blower will
not Start
P S S P P