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U U n n i i t t S S t t a a r r t t u u p p
Troubleshooting Chart
P P - - P P R R I I M M A A R R Y Y C C A A U U S S E E S S / / S S - - S S E E C C O O N N D D A A R R Y Y C C A A U U S S E E S S
SYSTEM FAULTS
REFRIGERANT CIRCUIT
Liquid Pressure too High
Liquid Pressure too Low
Suction Pressure too High
Suction Pressure too Low
Liquid Refrigerant
Floodback (TXV System)
I.D. Coil Frosting
Compressor Runs
Inadequate or No Cooling
ELECTRICAL
Compressor & O.D. Fan Do
P
Not Start
Compressor will not Start
but O.D. Fan Runs
O.D. Fan will Not Start
Compressor Hums but will
Not Start
Compressor Cycles on IOL
I.D. Blower willnot Start
P
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18-EB40D1-1C-EN
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