GMES96-U Installation Manual

32
FAULT CODE RETRIEVAL
The ignition control is equipped with a push button (SW1)
that can be used to display on the diagnostic LED the last
five faults detected by the control. The control must be in
Standby Mode (no thermostat inputs) to use the feature.
Depress the push button once for less than 5 seconds. Re-
lease the push button. The diagnostic LED will then display
the flash codes associated with the last five detected faults.
The order of display is the most recent fault to the least
fault. See trouble shooting guide for fault description.
CLEAR FAULT MEMORY
Replace the following “The push button (SW1) on the igni-
tion control can be used to erase the fault code as well. The
control must be in Standby Mode (no thermostat inputs) to
use the feature. Press and hold SW1 button for more than 5
seconds, but less than 10 seconds and the control will erase
the stored fault code history. LED will display rapid green
flash to indicate the fault history has been cleared.
RESETTING FROM LOCKOUT
Furnace lockout results when a furnace is unable to achieve igni-
tion after three attempts during a single call for heat. It is
characterized by a non-functioning furnace and a fault code
displayed. 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
HIGH VOLTAGE !
T O AVOID PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK , DISCONNECT ELECTRICAL POWER
BEFORE
PERFORMING ANY SERVICE OR MAINTENANCE .
WARNING
ANNUAL INSPECTION
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 atten-
tion to the following items. Repair or service as necessary.
• 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,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: Check for Blockage
FILTERS
FILTER MAINTENANCE
A return air filter is not supplied with this furnace; however,
there must be a means of filtering all of the return air. The
installer will supply filter(s) at the time of installation.
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
required. When replacing a filter, it must be replaced with a
filter of the same type and size.
Become familiar with filter location and procedures for re-
moval, cleaning and replacing them. If help is needed, con-
tact the installer of the furnace or a qualified servicer.
FILTER REMOVAL
HIGH VOLTAGE!
T O PREVENT PROPERTY DAMAGE , PERSONAL INJURY OR
DEATH DUE TO ELECTRICAL SHOCK , DISCONNECT
ELECTRICAL POWER TO THE FURNACE BEFORE
REMOVING THE FILTER OR PERFORMING ANY OTHER
MAINTENANCE .
WARNING
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 me-
dia air filter or electronic air cleaner can be used as an alternate
filter. Follow the filter sizes given in the Recommended Mini-
mum Filter size table 7 or instruction provided by the media
or electronic air cleaner manufacturer 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.
HORIZONTAL UNIT FILTER REMOVAL
Filters in horizontal installations are located in the central return
register or the ductwork near the furnace.