420706-UUM-A-1008
Make sure you DO NOT move the clip on weight on the
indoor fan wheel when cleaning the wheel. This weight is
used to balance the wheel. Moving the weight will cause
the fan wheel to vibrate.
MOTOR LUBRICATION
The motors in these furnaces
are permanently
lubricated,
and do not
require periodic oiling.
SECTION V: SERVICE INFORMATION
TROUBLESHOOTING
PROBLEMS
If your furnace
is not operating
correctly,
the following
visual
checks
should be made before contacting
your local contractor,
dealer, or ser-
vice provider.
1.
Check that electrical power to the furnace is turned on.
2.
Check that the manual gas shut-off valve in the gas piping supply
is turned to the ON position. Refer to Figure 3.
3.
Check that the ON/OFF
switch on the gas valve is turned to the
ON position. Refer to Figure 3.
4.
Check that the furnace blower access panel/door
is correctly posi-
tioned.
The electrical
power supply will be cut off if this door is
removed.
FURNACE
CONTROL
DIAGNOSTICS
The furnace has built-in, self-diagnostic
capability.
If a system problem
occurs,
a blinking
LED shows
a fault code. The LED can flash red,
green or amber to indicate
various
conditions.
It is located
behind
a
clear view port in the blower compartment
door.
The control continuously
monitors
its own operation
and the operation
of the system. If a failure occurs, the LED will indicate the failure code. If
the failure is internal to the control, the light will stay on continuously.
In
this case, the entire control should
be replaced,
as the control
is not
field repairable.
Flash sequence
codes 1 through
10 are as follows:
LED will turn "on"
for 1/4 second and "off" for 1/4 second. This pattern will be repeated the
number of times equal to the code. For example, six "on" flashes equals
a number 6 fault code. All flash code sequences
are broken by a 2 sec-
ond "off" period.
SLOW GREEN FLASH:
Normal operation.
DOUBLE
AMBER
FLASH:
Normal heating operation
- Modulating
Fur-
nace Models Only
SLOW AMBER
FLASH:
Normal operation
with call for heat.
RAPID
RED FLASHES:
There is a problem with the operation
of this
furnace.
Contact your local dealer, contractor
or service provider.
FURNACE
MAINTENANCE
- DEALERICONTACTOR
The furnace
should
be cleaned
and adjusted
by a certified
dealer or
qualified
service
contractor
once a year or before
the start of every
heating
season.
The following
items must be cleaned and serviced
or
replaced
if there are signs of deterioration.
1.
The vent terminal.
2.
The furnace vent and combustion
air intake passageways.
Should
it be necessary
to service the vent/air intake system, the manufac-
turer recommends
this service be conducted
by a qualified service
agency. The operation
of this appliance
requires
the reassembly
and resealing
of the vent/air intake system.
3.
The furnace burners, ignitor and flame sensor.
4.
The condensate
collection
and disposal
system.
If any disassem-
bly of components
containing
flue or vent gases
is required,
a
qualified service agency must perform the service.
5.
Heat exchanger
assembly.
6.
Induced draft motor assembly.
REPLACEMENT
PARTS LIST
All components,
assemblies,
accessories,
and replacement
parts for
this furnace
are available
through
qualified
service agencies.
It is not
recommended
that the user purchase,
install, or replace
any compo-
nents of this furnace.
Contact
your local contactor,
dealer, or service
provider for additional
information.
WIRING
DIAGRAM
The unit wiring diagram may be found on the inside of one of the access
panels
on the furnace.
It is intended
for reference
only. If service
is
required, contact your local contactor, dealer, or service provider.
Johnson Controls Unitary Products
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