Diagnostic Chart; Resetting From Lockout; Maintenance; Annual Inspection - Goodman GMVC950704CX Installation Instructions Manual

T
ROUBLESHOOTING
D C
IAGNOSTIC HART
HIGH VOLTAGE !
T
O AVOID PERSONAL INJURY OR
,
ELECTRICAL SHOCK DISCONNECT
BEFORE
PERFORMING ANY SERVICE
Refer to the Troubleshooting Chart in the Appendix for assistance
in determining the source of unit operational problems. The dual 7-
segment LED display will display an error code that may contain a
letter and number. The error code may be used to assist in trouble-
shooting the unit.
R F L
ESETTING ROM OCKOUT
Furnace lockout results when a furnace is unable to achieve igni-
tion after three attempts during a single call for heat. It is charac-
terized by a non-functioning furnace and a E 0 code displayed on
the dual 7-segment display. If the furnace is in "lockout", it will (or
can be) reset in any of the following ways.
1. Automatic reset. The integrated control module will
automatically reset itself and attempt to resume normal
operations following a one hour lockout period.
2. Manual power interruption. Interrupt 115 volt power to the
furnace.
3. Manual thermostat cycle. Lower the thermostat so that
there is no longer a call for heat for 1 -20 seconds then
reset to previous setting.
NOTE: If the condition which originally caused the lockout still
exists, the control will return to lockout. Refer to the Troubleshooting
Chart for aid in determining the cause.
M
AINTENANCE
T ,
O AVOID ELECTRICAL SHOCK
DISCONNECT ELECTRICAL POWER
. I

MAINTENANCE

F YOU MUST
. T
HANDLE WITH CARE OUCHING
,
WITH BARE FINGERS ROUGH HANDLING
COULD DAMAGE THE IGNITER
. O
FAILURE NLY A QUALIFIED SERVICER
.
HANDLE THE IGNITER
A I
NNUAL NSPECTION
The furnace should be inspected by a qualified installer, or service
agency at least once per year. This check should be performed at
the beginning of the heating season. This will ensure that all fur-
nace components are in proper working order and that the heating
system functions appropriately. Pay particular attention to the fol-
lowing items. Repair or service as necessary.
& M
AINTENANCE
WARNING
DEATH DUE TO
ELECTRICAL POWER
.
OR MAINTENANCE
WARNING
,
INJURY OR DEATH
BEFORE PERFORMING ANY
,
HANDLE THE IGNITER
THE IGNITER ELEMENT
OR VIBRATION
RESULTING IN PREMATURE
SHOULD EVER
• Flue pipe system. Check for blockage and/or leakage.
Check the outside termination and the connections at
and internal to the furnace.
• Heat exchanger. Check for corrosion and/or buildup within
the heat exchanger passageways.
• Burners. Check for proper ignition, burner flame, and
flame sense.
• Drainage system. Check for blockage and/or leakage.
Check hose connections at and internal to furnace.
• Wiring. Check electrical connections for tightness and/
or corrosion. Check wires for damage.
•

Filters.

F
ILTERS
T
O ENSURE PROPER UNIT
GIVEN IN THE RECOMMENDED
S S
PECIFICATION HEET APPLICABLE
F M
ILTER AINTENANCE
Improper filter maintenance is the most common cause of inad-
equate heating or cooling performance. Filters should be cleaned
(permanent) or replaced (disposable) every two months or as re-
quired. When replacing a filter, it must be replaced with a filter of
the same type and size.
F R
ILTER EMOVAL
Depending on the installation, differing filter arrangements can be
applied. Filters can be installed in either the central return register
or a side panel external filter rack (upflow only). A media air filter or
electronic air cleaner can be used as an alternate filter. Follow the
filter sizes given in the Recommended Minimum Filter size table
to ensure proper unit performance.
To remove filters from an external filter rack in an upright upflow
installation, follow the directions provided with external filter rack
kit.
H U F
ORIZONTAL NIT ILTER
Filters in horizontal installations are located in the central return
register or the ductwork near the furnace.
To remove:
1. Turn OFF electrical power to furnace.
2. Remove filter(s) from the central return register or ductwork.
3. Replace filter(s) by reversing the procedure for removal.
4. Turn ON electrical power to furnace.
M A F E
EDIA IR ILTER OR
Follow the manufacturer's directions for service.
50
CAUTION
,
PERFORMANCE ADHERE TO THE
M F S T
INIMUM ILTER IZE ABLE
.
TO YOUR MODEL
R
EMOVAL
A C R
LECTRONIC IR LEANER
FILTER SIZES
OR
EMOVAL