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F
L
A
S
H
N I
G
S
L
O
W
F
L
A
S
H
N I
G
F
A
S
T
C
O
N
T
N I
U
O
U
S
O
N
C
O
N
T
N I
U
O
U
S
O
F
F
2
F
L
A
S
H
E
S
3
F
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E
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6
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20
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)
Liquid Refrig. floodback (Cap. Tube System)
I. D. Coil Frosting
Compressor Runs Inadequate or No Cooling
ELECTRICAL
Compressor & O.D. fan Do Not Start
Compressor Will Not Start But O.D. Fan Runs
O.D. Fan Won't Start
Compressor Hums But Will Not Start
Compressor Cycles on IOL
I.D. Blower Won't Start
P-PRIMARY CAUSES S-SECONDARY CAUSES
G I
N
L
E
D
D
A I
G
N
O
F
L
A
F
L
CHECKOUT PROCEDURE
TROUBLESHOOTING CHART
S
T
C I
N I
D
C I
A
T
O
N
O
R
M
A
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N
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C
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V
A
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F (
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N
Page 21
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