Troubleshooting; Electrostatic Discharge (Esd) Precautions; Diagnostic Chart; Resetting From Lockout - Amana GUCA Installation Instructions Manual

XVIII. Troubleshooting

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

NOTE: Discharge body's static electricity before touching
unit. An electrostatic discharge can adversely affect electrical
components.
Use the following precautions during furnace installation
and servicing to protect the integrated control module from
damage. By putting the furnace, the control, and the person
at the same electrostatic potential, these steps will help
avoid exposing the integrated control module to electro-
static discharge. This procedure is applicable to both
installed and uninstalled (ungrounded) furnaces.
1. Disconnect all power to the furnace. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body's electrostatic
charge to ground.
2. Firmly touch a clean, unpainted, metal surface of the
furnaces near the control. Any tools held in a person's
hand during grounding will be discharged.
3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution
not to recharge your body with static electricity; (i.e., do
not move or shuffle your feet, do not touch ungrounded
objects, etc.). If you come in contact with an un-
grounded object, repeat step 2 before touching control
or wires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a furnace. Return any old or
new controls to their containers before touching any
ungrounded object.

DIAGNOSTIC CHART

WARNING
To avoid electrical shock, injury or death,
disconnect electrical power before
performing any service or maintenance.
Refer to the troubleshooting chart on the following pages for
assistance in determining the source of unit operational
problems. The red diagnostic LED blinks to assist in
troubleshooting the unit. The number of blinks refers to a
specific fault code.

RESETTING FROM LOCKOUT

Furnace lockout results when a furnace is unable to achieve
ignition after three attempts, or when it has lost flame five
times during a single call for heat. It is characterized by a
non-functioning furnace and a one flash diagnostic LED
code. 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 for 0 - 20 seconds.
3. Manual thermostat cycle. Lower the thermostat so that
there is no longer a call for heat then reset to previous
setting. Interrupt thermostat signal to the furnace for
0 - 20 seconds.
NOTE: If the condition which originally caused the lockout
still exists, the control will return to lockout. Refer to Section
XVIII, Troubleshooting - Diagnostic Chart for aid in
determining the cause.
XIX. Maintenance
WARNING
To avoid electrical shock, injury or death,
disconnect electrical power before
performing any maintenance.
If you must handle the igniter, handle with
care. Touching the igniter element with
bare fingers, rough handling, or vibration
could damage the igniter resulting in
premature failure. Only a qualified servicer
should ever handle the igniter.

ANNUAL INSPECTION

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 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 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, 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.

FILTERS
CAUTION
To ensure proper unit performance, adhere
to the filter sizes given in the Specifications
Sheet.

Maintenance

Improper filter maintenance is the most common cause of
inadequate 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.
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