2 G6RA, G6RK Service Manual
INTRODUCTION
This service manual is designed to be used in conjunction with the installation manual provided with
each furnace.
This furnace represents the very latest in mid efficiency gas furnace technology. Consequently, certain
controls within the furnace consist of highly sophisticated electronic components which are not user
serviceable. Therefore, it is essential that only competent, qualified service personnel attempt to
install, service, or maintain this product.
This service manual was written to assist the professional HVAC service technician to quickly and
accurately diagnose and repair any malfunctions of this product.
This service manual covers both upflow/horizontal models and downflow models installed as
Category I and Category III applications. The overall operation of all these models is basically the same
with the exception of certain controls that are unique to a particular model.
This manual, therefore, will deal with all subjects in a general nature (I.E. all text will pertain to all
models) unless that subject is unique to a particular model or family, in which case it will be so
indicated.
It will be necessary then for you to accurately identify the unit you are servicing, so you may be certain
of the approved diagnosis and repair. (See Unit Identification on
Page 4.
)
This manual was prepared by the senior Technical Service and Communication Departments.
The information contained in this manual is intended for use by a qualified service technician who is
familiar with the safety procedures required in installation and repair and who is equipped with the
proper tools and testing instruments.
Installations and repairs made by unqualified persons can result in hazards subjecting the unqualified
person making such repairs to the risk of injury or electrical shock which can be serious or even fatal
not only to them, but also to persons being served by the equipment.
If you install or perform service on equipment, you must assume responsibility for any bodily injury or
property damage which may result to you or others. We will not be responsible for any injury or property
damage arising from improper installation, service, and/or service procedures.
WARNING
!
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