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8-10
TROUBLESHOOTING
SYMPTOM: High head pressure (Air-cooled machine).
POSSIBLE CAUSE
Condenser fan(s) not running.
Dirty condenser causing restricted airflow.
Non-condensables (usually air) in the system.
2/14/07
POSSIBLE REMEDY
Defective motor, fan control switch, fan
contactor. Replace defective part. Check
condenser fan disconnect for thrown switch,
or blown fuse. Replace fuse and reset switch.
If the condenser is split, check the normally
open solenoid valve to make sure it is open;
also check the fan sequencing thermostats and
fan motor contactors to make sure they are
functioning properly. Replace any defective
parts.
Visually inspect condenser and clean as
necessary.
Follow same procedure as specified for
removing
non-condensables
Cooled machine, except evacuate the air-
cooled condenser also.
03TA Service Manual
from
Water
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