Troubleshooting Checklist - Trane VUV Installation, Owner Maintenance

WARNING
!
Hazardous Service Procedures!
The maintenance and trouble shooting procedures recommended in this section of the manual could result in
exposure to electrical, mechanical or other potential safety hazards. Always refer to the safety warnings pro-
vided throughout this manual concerning these procedures. When possible, disconnect all electrical power
including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power
can not be inadvertently energized. When necessary to work with live electrical components, have a qualified
licensed electrician or other individual who has been trained in handling live electrical components per these
tasks. Failure to follow all of the recommended safety warnings provided, could result in death or serious in-
jury.
If operating difficulties are encountered, refer to page 31 and 32 for probable causes and corrective measures. If suggested
corrective measures have been taken, and the trouble still persists, contact the control supplier or the local Trane Sales Of-
fice.
Problem
Room too warm
(outside air temperature is below 35° F)
Room too warm
(outside air temperature is above 35° F)
Room too warm
(outside air temperature is above 35° F)
Unit utilizes Wall Fin auxiliary radiation:
UV-SVN03C-EN
Trouble Shooting
Checklist
Heating Cooling Cause
X Main power off
X Room sensor is not properly set
Room sensor is providing a false reading due
X to walls being cold from the night temperature
setting.
Sensor is mounted on a block wall that is
X leaking cold air into the room through the
mounting holes.
Face and bypass damper, or coil valve is
X
malfunctioning.
X Room sensor is not properly set
Face and bypass damper or coil control valve
X
is malfunctioning.
X OA damper is in the closed position
X Clogged filter
X Control valve is malfunctioning
X Boiler
X Steam
X Outside air temperature is above 60 to 65° F
Correction
Check fuses
Reset room sensor temperature
Start the warm-up cycle earlier in the
morning to provide appropriate time-
frame to increase room temperature prior
to space occupation.
Relocate sensor.
Replace malfunctioning component, or
contact the control's contractor, or if Trane
controls, see CNT-SVX04A-EN for more
information concerning Tracer™ controls.
Reset room sensor temperature
Replace malfunctioning component, or
contact the control's contractor, or if Trane
controls, see CNT-SVX04A-EN for more
information concerning Tracer™ controls.
Ensure OA damper is in the open
position.
Replace filter
Check flow of hot water through the
control valve.
Check the boiler reset schedule to
determine if the loop temperature can be
decreased.
Check the operation of the control valves
The economics of the unit ventilator
selection dictate that, in most cases, the
unit will be sized to provide adequate
natural (ventilation) cooling without
outside temperatures up to 60-65 F.
Above this point, a changeover should be
made to the mechanical cooling cycle.
31