| Questions |
Cause |
Remedy |
| Have you checked the line voltage? |
Low line voltage. |
Increase voltage to no less than 10% under compressor motor rating. |
| |
Excessive line voltage. |
Reduce voltage to maximum of 10% over motor rating. |
| Have you checked the wiring? |
Improperly wired. |
Check wiring against diagram and correct as necessary. |
| Do you have correct contactor or Relay? |
Incorrect contactor or Relay. |
Replace contactor or Relay with model that has properly selected characteristics. |
| How is the contactor or relay mounted? |
Incorrect mounting. |
Mount in correct position. |
| Is the contactor or relay vibrating? |
Contactor or relay vibrating. |
Tighten mounting screws, mount contactor or relay in Rigid location. |
| Is the compressor short cycling? |
Short cycling. |
Reduce number of starts per hour. |
