
MECHANICAL
CONDITIONS
CONT’D
Alarm | Possible cause Solution |
Pump Overload Overload set incorrectly. (pump and compres-
sor are off)
Low supply voltage.
Check table on wiring diagram for correct amperage. Adjust overload accordingly.
❏Check supply voltage. Supply voltage to contactor should be +- 10% of name- plate voltage.
❏Check wire terminations and connections. Tighten if loose.
Faulty contactor | Check line and load side of |
| contactor. It should be less |
| than 5 volt drop across the |
| contactor. If it is not, replace |
| the contactor. See Replacing |
| the Contactor in the |
| Troubleshooting section. |
Faulty overload module. | Check amp draw of circuit. If |
| it is under the rated setting, |
| replace the overload module. |
| See Replacing Overload |
| Modules, in the |
| Troubleshooting section. |
|
|
UGH016/0500 | Series 1 Portable Chillers, TIC Control | TROUBLESHOOTING |