Potential Relay Troubleshooting

After taking all of the connecting wires off of the potential relay measure the resistance across the 1 and 2 terminals.

Potential relay troubleshooting. The coil is wired between terminals 2 and 5 with the contacts between terminals 1 and 2. All you have to do is touch the ends of the. Knowing the sequence of operation for this type of starting relay can help you diagnose confirm or rule out certain service problems. Potential relay operation and testing.

I ve used this procedure many times. Replacement relays can be cross referenced for different manufacturers using convenient tables via the internet. Troubleshooting of a potential relay can be done with an ohmmeter. I show the.

Whenever possible the model number on the old relay should be used when ordering a new relay. Remember short out the start cap used above. The relay coil is across terminals 2 and 5 while the relay contacts are across terminals 1 and 2. The relay does the same thing.

It s probably a bad potential relay. Potential starting relays consist of a high resistance coil and a set of normally closed contacts. The above procedure simply mimics the action of the potential relay. My paperback and e book.

When used with a run capacitor a 15 000 ohm to 18 000 ohm 2 w bleed resistor should be attached to the start capacitor to prevent possible arcing when the relay contacts open. A simple ohmmeter is all that is needed to troubleshoot a potential relay. This video explains the terminal arrangement of a potential relay how to wire it up and how it works.