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SYMPTOM Ł
POSSIBLE CAUSE
Ń
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 XXX
CAPACITOR DEFECTIVE XX
SWITCH DEFECTIVE XX
LOW LINE VOLTAGE XXX
SHORTED MOTOR WINDING XX X
NO POWER TO UNIT X
INTERNAL THERMOSTAT OPEN X
MISWIRED XXX X
FAN STUCK X
BROKEN MOTOR WIRE XXX X
MOTOR WINDING GROUNDED XX
OPEN MOTOR WINDING XXX X
FIGURE 63 — FAN MOTOR TROUBLESHOOTING CHART
TYPICAL 208/230 VOLT MOTORS
CARRIER PART NUMBER HC37CE246 HC37CE242 HC35CE234 HC37CE211
MANUFACTURER’S
PART NUMBER
5KCP39BGT165S 5KCP39BGR198S 5KCP39CGT162S 5KCP39DGT164S
MOTOR VOLTAGE 208/230 208/230 208/230 208/230
MOTOR HORSEPOWER
1
⁄
15
1
⁄
10
1
⁄
8
1
⁄
6
MOTOR SPEEDS 2322
RESISTANCE (OHMS)
BLACK TO WHITE WIRE
147 90 74 58
RESISTANCE (OHMS)
BLACK TO BROWN WIRE
169 71 53 24
RESISTANCE (OHMS)
BLACK TO BLUE WIRE
N.A. 38 N.A. N.A.
RESISTANCE (OHMS)
BLACK TO RED WIRE
42 31 28 41
NOTE: Resistance values are approximate.
TYPICAL 265 VOLT MOTORS
CARRIER PART NUMBER HC29CE273 HC33CE267 HC35CE268 HC37CE266
MANUFACTURER’S
PART NUMBER
5KCP39BGT161S 5KCP39BGR199S 5KCP39CGT163S 5KCP39EGT171S
MOTOR VOLTAGE 265 265 265 265
MOTOR HORSEPOWER
1
⁄
15
1
⁄
10
1
⁄
8
1
⁄
6
MOTOR SPEEDS 2322
RESISTANCE (OHMS)
BLACK TO WHITE WIRE
172 85 78 52
RESISTANCE (OHMS)
BLACK TO BROWN WIRE
197 52 45 26
RESISTANCE (OHMS)
BLACK TO BLUE WIRE
N.A. 43 N.A. N.A.
RESISTANCE (OHMS)
BLACK TO RED WIRE
49 34 34 43
NOTE: Resistance values are approximate.
FIGURE 64 — TYPICAL 52S FAN MOTORS
33