DuraSea Condenser Installation, Start-Up & Service Manual
Troubleshooting
L-3153
21
GENERAL TROUBLESHOOTING
T
ROUBLESHOOTING
If you have a digital control, refer also to the troubleshooting section of the manual packaged with it.
Table 3: General Troubleshooting
PROBLEM
POSSIBLE REASON/SOLUTION
Compressor does not run.
Contactor Open:
1.
Power off.
Restore power.
2.
Fuses blown in field power circuit.
After finding cause and correcting, replace with
correct size fuse.
3.
No control power.
Check control transformer primary connections and circuit
breaker.
4.
Thermostat circuit open.
Check thermostat setting.
5.
Safety device lockout circuit active.
Reset lockout circuit.
6.
Low-pressure switch open.
Check for refrigerant undercharge, obstruction of indoor
airflow. Make sure liquid line solenoid valve(s) is open.
7.
High-pressure switch open.
Check for refrigerant overcharge, obstruction of
outdoor airflow, air in system. Be sure outdoor fans are operating correctly.
8.
Compressor overtemperature switch open.
Check for open condition. Allow time
for reset. Replace compressor if necessary.
9.
Loose electrical connections.
Tighten all connections.
10.
Compressor stuck.
See compressor service literature.
Contactor Closed:
1.
Compressor leads loose.
Check connections.
2.
Motor windings open.
See compressor service literature.
3.
Single phasing.
Check for blown fuse. Check for loose connection at compressor
terminal.
Compressor stops on high-
pressure switch.
Outdoor Fan On:
1.
High-pressure switch faulty.
Replace switch.
2.
Reversed fan rotation.
Confirm rotation, correct if necessary.
3.
Airflow restricted.
Remove obstruction.
4.
Air recirculating.
Clear airflow area.
5.
Noncondensables in system.
Recover refrigerant and recharge as required.
6.
Refrigerant overcharge.
Recover refrigerant as required.
7.
Line voltage incorrect.
Consult power company.
8.
Refrigerant system restrictions.
Check or replace filter drier, expansion valve, etc.
Outdoor Fan Off:
1.
Motor not running.
Check power. Check capacitor for single-phase fan.
2.
Motor overload open.
Check overload rating. Check for fan blade obstruction.
3.
Motor burned out.
Replace fan assembly.
Summary of Contents for DuraSea DCA120D
Page 27: ...NOTES ...
