fan motor terminal identification
TRANSCRIPT
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5/21/2018 Fan Motor Terminal Identification
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Fan Motor
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Fan Motor Terminals
6 leads out ( 6 Wires )
1. Auxiliary or Starting
2. High Speed
3. Medium
4. Low Speed
5. Common 16. Common 2
5 leads out ( 5 Wires )
1. Auxiliary or Starting
2. High Speed
3. Medium
4. Low Speed
5. Common
4 leads out ( 4 Wires )
1. Auxiliary or Starting2. High Speed
3. Low Speed
4. Common
3 leads out ( 3 Wires )
1. Auxiliary or Starting3. Speed / Running
4. Common
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Identifying Fan Motor Terminals
Terminal Identity
Highest Resistance - Starting or auxiliary2ndHighest Resistance - Low Speed terminal
3rd Highest Resistance - Medium
4th Lowest Resistance - High Speed Terminal
No Resistance - Common 1
No resistance - Common 2
6 leads out ( 6 Wires )
1. Auxiliary or Starting
2. High Speed
3. Medium
4. Low Speed
5. Common 16. Common 2
12
34
56
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Aux - C1 100 ohms
Aux - C2 100 ohms
Aux - Hi 120 ohms
Aux - Med 140 ohms
Aux - Lo 160 ohms
12
34
Auxiliary
High
Med
Low
Common 1
100 Ohms
20 Ohms
20 Ohms
20 Ohms
1
2
3
4
5
6
6 leads out ( 6 Wires )
Common 21-6
1-5
1-4
1-3
1-2
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Auxiliary
High
Med
Low
Common 1
100 Ohms
20 Ohms
20 Ohms
20 Ohms
1
2
3
4
5
6
Common 2
Aux - C1 100 ohms
Aux - C2 100 ohms
Aux - Hi 120 ohms
Aux - Med 140 ohms
Aux - Lo 160 ohms 1-6
1-5
1-4
1-3
1-2
Get the highest Reading
Aux - Low 160 ohms
Aux - Med 140 ohms
Aux - High 120 ohms
Aux - C1 100 ohms
1st
2nd
3rd
4th
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Steps in Identifying Fan Motor Terminal
1. Prepare Multi Tester
2. Label terminals with numbers
3. Check Resistance of every pair of terminals4. Get the highest to lowest reading
Highest should be theAuxand Low speed
2ndhighest should be theAuxand Medium
3rd highest should be theAuxand High speed
5. Get the lowest reading
It should be between Common and High speed
The two common terminals must have no resistance
reading
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Auxiliary
High
Med
Low
Common 1
100 Ohms
20 Ohms
20 Ohms
20 Ohms
Common 2
comp
Selector Switch
Fan Capacitor
L
N
6 Leads Out
Comp
Hi
Med
Lo
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Auxiliary
High
Med
Low
Common 1
100 Ohms
20 Ohms
20 Ohms
20 Ohms
comp
Selector Switch
Fan Capacitor
L
N
5 Leads Out
Comp
Hi
Med
Lo
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Auxiliary
High
Low
Common 1
100 Ohms
20 Ohms
20 Ohms
comp
Selector Switch
Fan Capacitor
L
N
4 Leads Out
Comp
Hi
Lo
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Starting / Auxiliary
Common
Running
100 Ohms
20 Ohms comp
Selector Switch
Fan Capacitor
L
N
3 Leads Out
Comp
Fan
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20 Ohms comp
Selector Switch
L
N
2 Leads Out
Comp
Fan
L1