48
UV-SVN002-EN
Troubleshooting
Cooling
A.
Room Too Hot
1. Check the room thermostat to
make sure it is properly set and
that the thermostat is in the
cooling cycle.
2. Check the outside air damper.
The damper should be at a
minimum outside air position.
3. Check for a clogged filter. This will
reduce air flow and unit cooling
capacity. If a clogged filter is
found, clean or replace it.
4.
For chilled water cooling:
a. Check for proper operation of
the face and bypass damper or
coil control valve. If the damper
or valve appears to be function-
ing improperly, contact the
control contractor or, if Trane
controls, see
CNT-SVX04A-EN
(Tracer
TM
ZN520 Unit Controller
IOP) for details on DDC controls.
b. Check the temperature of the
water leaving the chiller to
insure that it meets design
requirements.
Motor
If the motor fails to start and other
motors on the same circuit are func-
tioning:
A. Check the unit switch to make
sure it is in the ‘‘ON’’ position.
B. Check for loose switch or motor
connections.
Have a qualified electrician check the
motor anytime it is operating improper-
ly.
Summary of Contents for UV-SVN02B-EN
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