10TA Service Manual
TROUBLESHOOTING
4/23/14
8-10
SYMPTOM:
High head pressure (Air-cooled machine).
POSSIBLE CAUSE POSSIBLE REMEDY
Condenser fan(s) not running. Defective motor, fan control switch, fan
contactor, or tripped fan motor overload.
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.
Dirty condenser causing restricted air flow. Visually inspect condenser and clean as
necessary.
Non-condensables (usually air) in the
system.
Follow same procedure as specified for
removing non-condensables from Water
Cooled machine, except evacuate the air-cooled
condenser also.
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