Carrier P User Manual
Page 29
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FIGURE 54 — FAN MOTOR TROUBLESHOOTING CHART
TYPICAL 208/230 VOLT MOTORS
NOTE: Resistance values are approximate.
TYPICAL 265 VOLT MOTORS
NOTE: Resistance values are approximate.
FIGURE 55 — TYPICAL 52C,P FAN MOTORS
POSSIBLE CAUSE
SYMPTOM
MOTOR HUMS
BUT DOES
NOT START
MAKES NO NOISE
AND DOES NOT
START
STARTS BUT
STOPS AFTER
SHORT TIME
STARTS
BUT RUNS
SLOW
RUNS ON
ONE SPEED,
NOT ON OTHERS
DEFECTIVE BEARING
X
X
X
CAPACITOR DEFECTIVE
X
X
SWITCH DEFECTIVE
X
X
LOW LINE VOLTAGE
X
X
X
SHORTED MOTOR WINDING
X
X
X
NO POWER TO UNIT
X
INTERNAL THERMOSTAT OPEN
X
MISWIRED
X
X
X
X
FAN STUCK
X
BROKEN MOTOR WIRE
X
X
X
X
MOTOR WINDING GROUNDED
X
X
OPEN MOTOR WINDING
X
X
X
X
UNIT 52C,P (BTUH)
7,000/9,000
12,000/15,000
CARRIER MOTOR PART NUMBER
HC37GE237
HC37GE238
MANUFACTURER’S
PART NUMBER
5KCP29ECA299A
5KCP29ECA301
MOTOR VOLTAGE
208/230
208/230
MOTOR HORSEPOWER
.075
.125
MOTOR SPEEDS
2
2
RESISTANCE (OHMS)
BLACK TO WHITE WIRE
101.4
90
RESISTANCE (OHMS)
BLACK TO BROWN WIRE
45.8
71
RESISTANCE (OHMS)
BLACK TO RED WIRE
38.8
32.9
UNIT 52C,P (BTUH)
7,000/9,000
12,000/15,000
CARRIER MOTOR PART NUMBER
HC29GE236
HC33GE239
MANUFACTURER’S
PART NUMBER
5KCP29FCA315
5KCP29FCA316
MOTOR VOLTAGE
265
265
MOTOR HORSEPOWER
.075
.125
MOTOR SPEEDS
2
2
RESISTANCE (OHMS)
BLACK TO WHITE WIRE
144.0
83.7
RESISTANCE (OHMS)
BLACK TO BROWN WIRE
29.3
39.1
RESISTANCE (OHMS)
BLACK TO RED WIRE
82.1
45.2