31
XVIII. TR
XVIII. TR
XVIII. TR
XVIII. TR
XVIII. TROUBLESH
OUBLESH
OUBLESH
OUBLESH
OUBLESHOO
OO
OO
OO
OOTIN
TIN
TIN
TIN
TING
G
G
G
G
E
LECTROSTATIC
D
ISCHARGE
(ESD) P
RECAUTIONS
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 ser-
vicing to protect the integrated control module from damage. By
putting the furnace, the control, and the person at the same electro-
static potential, these steps will help avoid exposing the integrated
control module to electrostatic discharge. This procedure is appli-
cable 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 ungrounded 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.
D
IAGNOSTIC
C
HART
WARNING
T
O AVOID ELECTRICAL SHOCK, INJURY OR DEATH, DISCONNECT ELECTRICAL
POWER BEFORE PERFORMING ANY SERVICE OR MAINTENANCE.
Refer to the
Troubleshooting Chart
at the end of this manual 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.
R
ESETTING
F
ROM
L
OCKOUT
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. MAINTENAN
XIX. MAINTENAN
XIX. MAINTENAN
XIX. MAINTENAN
XIX. MAINTENANCE
CE
CE
CE
CE
WARNING
T
O AVOID ELECTRICAL SHOCK, INJURY OR DEATH, DISCONNECT ELECTRICAL
POWER BEFORE PERFORMING ANY MAINTENANCE. IF YOU MUST HANDLE THE
IGNITER, HANDLE WITH CARE.
T
OUCHING THE IGNITER ELEMENT WITH BARE
FINGERS, ROUGH HANDLING, OR VIBRATION COULD DAMAGE THE IGNITER
RESULTING IN PREMATURE FAILURE.
O
NLY A QUALIFIED SERVICER SHOULD
EVER HANDLE THE IGNITER.
A
NNUAL
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 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.
•
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
CAUTION
T
O ENSURE PROPER UNIT PERFORMANCE, ADHERE TO THE FILTER SIZES
GIVEN IN THE
P
RODUCT
D
ATA
B
OOK APPLICABLE TO YOUR MODEL*.
M
AINTENANCE
Improper filter maintenance is the most common cause of inadequate
heating or cooling performance. Filters should be cleaned (perma-
nent) 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.
F
ILTER
R
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.
To remove internal filters see
Internal Filter Removal
section. Inter-
nal filters are an accessory item and are not included with your
furnace. For further details, see your distributor.
H
ORIZONTAL
U
NIT
F
ILTER
R
EMOVAL
Filters in horizontal installations are located in the central return reg-
ister 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.
