Troubleshooting - Trane TR-SCS Series Installation, Operation And Maintenance Manual

Maintenance
contactors and wiring. Contactors should be examined
and replaced if the contact pads are worn or pitted.

Troubleshooting

WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the
tags, stickers, and labels, as well as the following
instructions: Unless specified otherwise, disconnect all
electrical power including remote disconnect and
discharge all energy storing devices such as capacitors
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 perform these
tasks.
Turn off all power to the unit before conducting any
troubleshooting procedures unless the procedure
specifically requires the system to operate. For
troubleshooting purposes, the system may be operated
with the electric box open by using a pair of channel lock
pliers to turn the shaft of the main power disconnect
switch to the "On" position. When the switch is turned on,
high voltage will be present inside the box. Exercise
caution to prevent injury. Keep hands, clothing and tools
clear of the electrical terminals and rotating components.
Verify that your footing is stable.
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