Servicing AC/Heating Units
Safety is most important. Make sure you use lockouts and
tagouts. Master Lock makes a kit that can handle almost any task. Everything
from locking out breakers to locking out gas valves and wall switches. You
can find the kit in a
Grainger Catalog
When ever you work on something, make sure the power is
off. Many deaths a year occur in the field due to mistakes .
Just do yourself a favor, and keep safety as your primary
tool when working around equipment. Good judgment and precautions
should not be avoided.
HEAT CONTROLLER TROUBLESHOOTING CHART
This is a helpful chart which basically sends you in the
right direction to troubleshoot your Air Conditioner. It is by
Heatcontroller.

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