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Service Instructions
Goodman® & Amana® Brand
33 3/8" 80% Modified Two Stage Gas Furnaces
AMH8, GMH8, GDH8, ADSH8
& Accessories
This manual is to be used by qualified, professionally trained HV AC technicians only. Goodman does not assume any
responsibility for property damage or personal injury due to improper service procedures or services performed by an
unqualified person. The material in this manual does not supercede manufacutrer's installation and operation
instructions.
is a registered trademark of Maytag Corporation or its related companies and is used under license.
All rights reserved.
Copyright © 2006-2014, 2016 Goodman Manufacturing Company, L.P.
RS6612007r3
August 2016
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TABLE OF CONTENTS
IMPORTANT INFORMATION........................2 - 3
TROUBLESHOOTING ............................ 41 - 42
PRODUCT IDENTIFICATION ..................... 4 - 10
ACCESSORIES ................................... 11 - 15
OPERATING INSTRUCTIONS .................... 16 - 18
PRODUCT DESIGN............................... 19 - 39
MAINTENANCE .................................. 43 - 46
SERVICING ....................................... 47 - 63
SERVICING TABLE OF CONTENTS .................. 49
WIRING DIAGRAMS/SCHEMATICS .................. 64
SYSTEM OPERATION ................................. 40
IMPORTANT INFORMATION
Pride and workmanship go into every product to provide our customers with quality products. It is possible,
however, that during its lifetime a product may require service. Products should be serviced only by a qualified
service technician who is familiar with the safety procedures required in the repair and who is equipped with
the proper tools, parts, testing instruments and the appropriate service manual. REVIEW ALL SERVICE
INFORMATION IN THE APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS.
IMPORTANT NOTICES FOR CONSUMERS AND SER VICERS
RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS
O
NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST, SERVICE OR
REPAIR (HEREINAFTER
MANUAL SHOULD SERVICE THE EQUIPMENT
BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SERVICE OR SERVICE PROCEDURES
ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY
RESULT
. IN
LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL, ONLY
LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT
INSTALLATION, ADJUSTMENT, SERVICING OR REPAIR OF THE EQUIPMENT
SPECIFIED IN THIS MANUAL, OR ATTEMPTING TO INSTALL, ADJUST, SERVICE OR
REPAIR THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER
TRAINING MAY RESULT IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH
, “
SERVICE
”)
THE EQUIPMENT SPECIFIED IN THIS
. THE
MANUFACTURER WILL NOT
. IF
YOU SERVICE THIS UNIT, YOU
ADDITION, IN JURISDICTIONS THAT REQUIRE ONE OR MORE
.
2
. I
MPROPER
WARNING
HIGH VOLTAGE
D
ISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT.
BE PRESENT .
DAMAGE, PERSONAL INJ URY OR DEATH.
F
MULTIPLE POWER SOURCES MAY
AILURE TO D O SO MAY CAUSE PROPE RTY
WARNING
T
O PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH,
DO NOT STORE COMBUSTIBLE MATE RIALS OR USE GASOLINE OR OTHER
FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANCE.
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IMPORTANT INFORMATION
CO can c aus e serious il lness inc lu d i ng pe r m a n ent br a in
damage or death.
B10259-216
To locate an authorized servicer, please consult your
telephone book or the dealer from whom you purchased
this product. For further assistance, please contact:
CONSUMER INFORMATION LINE
GOODMAN® BRAND PRODUCTS
TOLL FREE
1-877-254-4729 (U.S. only)
email us at:
customerservice@goodmanmfg.com
fax us at: (731) 856-1821
(Not a technical assistance line for dealers.)
CONSUMER INFORMATION LINE
AMANA® BRAND PRODUCTS
TOLL FREE
1-877-254-4729 (U.S. only)
email us at:
hac.consumer.affairs@amanahvac.com
fax us at: (731) 856-1821
(Not a technical assistance line for dealers.)
Advertencia especial para la instalación de calentadores ó manejadoras
de aire en áreas cerradas como estacionamientos ó cuartos de servicio.
Las emisiones de monóxido de carbono p ueden circular a través
del aparato cu and o se ope ra en cua lqu i e r mo do .
El monó x id o de carbono puede causar en fermed ades seve ras
como daño cerebral per m a n e n te ó muerte.
RISQUE D'EM POISO N NE ME NT AU
Cette ventilation est nécessaire pour éviter le danger d'intoxication
au CO po uv an t su rv enir si un appareil produisant du monoxyde
de carbone continue de fonctionner au sein de la zone confinée.
MONOXYDE DE CARBONE
B10259-216
Outside the U.S., call 1-713-861-2500.
(Not a technical assistance line for dealers.) Your
telephone company will bill you for the call.
B10259-216
3