30
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
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. Release 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
Function:
When the SW1 button is pressed and held for
an extended period (more than 5 seconds, less than 10
seconds), the control erases the stored fault code history.
Operation:
The control must be powered and the thermostat
satisfied (no call for heat or cool). Depress and hold the SW1
button for at least 5 seconds (but not more than 10 seconds),
until the LED flashes a rapid green, then release. The fault
code history will be erased.
LED Display Indication:
Rapid Green Flash
Resetting From Lockout
WARNING
TO AVOID PERSONAL INJURY DUE TO ELECTRICAL SHOCK,
TURN
OFF
POWER TO THE FURNACE BEFORE CHANGING
SPEED TAPS.
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 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.
Field Test Mode
Function: When the SW1 button is pressed and held until
the LED is blinking in AMBER (more than 10 seconds, less
than 15 seconds), the control will execute a field test mode
sequence to cycle through component operation.
Operation: The control must be powered and the thermostat
satisfied (no call for heat or cool). Depress and hold the SW1
button for at least 10 seconds (but not more than 15 seconds),
until the LED is blinking in AMBER, then release. The control
will execute the following functions:
1. Blower - “Heat” Speed 15 seconds
2. Blower - “Cool” Speed 15 seconds
3. Blower - “Fan” Speed 15 seconds
4. Hot Surface Igniter 17 seconds
5. Inducer - “Run” setting 15 seconds
6. Inducer - 1” w.c. 60 seconds
7. Return to OFF mode
Once the Field Test Mode is initiated, all thermostat inputs
will be ignored until the field test sequence is completed. If
the SW1 button is held for more than 15 seconds, the button
press will be ignored and the LED display will return to its
prior state.
Maintenance
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 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
Filter 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
