Goodman Mfg VC8 Manuel D’Utilisation

37

The ignition control is equipped with a momentary push-button
switch that can be used to display the last six faults on the
dual 7-segment LED’s. The control must be in Standby Mode
(no thermostat inputs) to use the feature.  Depress the switch
for approximately 2 seconds.  Release the switch when the
LED’s are turned off.  The last six faults will be displayed most
recent to least recent on the dual 7-segment LED’s.

NOTE: Consecutively repeated faults are stored a maximum of
three times. Example: A clogged return air filter causes the
furnace limit to trip repeatedly. The control will only store this
fault the first three consecutive times the fault occurs.

Furnace lockout results when a furnace is unable to achieve
ignition after three attempts during a single call for heat.  It is
characterized by a non-functioning furnace and a 

EEEEE     00000 code dis-

played on the dual 7-segment display.  If the furnace is in “lock-
out”, 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 Diagnostic
Chart for aid in determining the cause.

The furnace should be inspected by a qualified installer, or ser-
vice agency at least once per year. This check should be per-
formed at the beginning of the heating season. This will ensure
that all furnace components are in proper working order and
that the heating system functions appropriately. Pay particular
attention to the following items.  Repair or service as neces-
sary.

•

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.

Improper filter maintenance is the most common cause of in-
adequate heating or cooling performance.  Filters should be
cleaned (permanent) or replaced (disposable) every two months
or as required.  When replacing a filter, it must be replaced with
a filter of the same type and size.

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 alter-
nate 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.

Filters in horizontal installations are located in the central re-
turn 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.

Follow the manufacturer’s directions for service.