Potential Relay Troubleshooting

Replacement relays can be cross referenced for different manufacturers using convenient tables via the internet.

Potential relay troubleshooting.

The coil is wired between terminals 2 and 5 with the contacts between terminals 1 and 2. The above procedure simply mimics the action of the potential relay. A simple ohmmeter is all that is needed to troubleshoot a potential relay. I ve used this procedure many times.

The resistance should read close to zero since there are normally closed contacts between terminals 1 and 2. The relay coil is across terminals 2 and 5 while the relay contacts are across terminals 1 and 2. The start cap is momentarily applied to the circuit then quickly disengaged. After taking all of the connecting wires off of the potential relay measure the resistance across the 1 and 2 terminals.

Potential starting relays consist of a high resistance coil and a set of normally closed contacts. I show the. A simple ohmmeter is all that is needed to troubleshoot a potential relay. My paperback and e book.

Knowing the sequence of operation for this type of starting relay can help you diagnose confirm or rule out certain service problems. This video explains the terminal arrangement of a potential relay how to wire it up and how it works. Whenever possible the model number on the old relay should be used when ordering a new relay. 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.

The relay does the same thing. All you have to do is touch the ends of the. Potential relay operation and testing.