30
The electrical ground and polarity for 115-- v wiring must be
properly maintained. Refer to Fig. 24 for field wiring information
and to Fig. 38 for furnace wiring information.
NOTE: If the polarity is not correct, the STATUS LED on the
control will flash rapidly RED and prevent the furnace from
heating. The control system also requires an earth ground for
proper operation of the control and flame--sensing electrode.
The 24 -- v circuit contains an automotive--type, 3-- amp. fuse
located on the control. (See Fig. 38) Any shorts of the 24--v
wiring during installation, service, or maintenance will cause this
fuse to blow. If fuse replacement is required, use ONLY a 3--amp.
fuse. The control LED will display a three flash AMBER code
when fuse needs to be replaced.
Proper instrumentation is required to service electrical controls.
The control in this furnace is equipped with a multi--colored
Status Code LED (Light--Emitting Diode) to aid in installation,
servicing, and troubleshooting. The furnace control LED is either
ON continuously, rapid flashing, or displaying a flash code in one
of three colors (Red, Green, or Amber).
For an explanation of status codes, refer to service label located
on blower access door or Fig. 35 and the Service guide at the end
of this manual.
See Fig. 35 for a summary of fault codes and a brief explanation
of fault codes.
The stored status code will not be erased from the control
memory, if 115-- or 24-- v power is interrupted.
1. T o retrieve status code, proceed with the following:
NOTE: NO thermostat signal may be present at control, and all
blower--OFF delays must be completed.
a. Remove outer access door.
b. Remove inner blower door.
c. Close blower door interlock switch.
d. Depress and hold SW1 button once (for less than 5
seconds).
2. When above items have been completed, the LED flashes
the fault code history (up to 5 fault codes from newest to
oldest). Record the status code(s) for further troubleshoot-
ing.
3. Check LED status. If no previous faults in the history,
control will rapidly flash the LED GREEN.
A180212
Fig. 35 -- Service Label
CARE AND
MAINTENANCE
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Never store anything on, near, or in contact with the
furnace, such as:
1. Spray o r aerosol cans, rags, brooms, dust mops,
vacuum cleaners, or other cleaning tools.
2. Soap powders, bleaches, waxes or other cleaning
compounds, plastic or plastic containers, gasoline,
kerosene, cigarette lighter fluid, dry cleaning fluids,
or other volatile fluids.
3. Paint thinners and other painting compounds, paper
bags, or other paper products.
!
WARNING
For continuing high performance and to minimize possible
equipment failure, periodic maintenance must be performed on
this equipment. Consult your local dealer about proper frequency
of maintenance and the availability of a maintenance contract.
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in personal
injury, death or property damage.
Turn off the gas and electrical supplies to the unit and
install lockout tag before performing any maintenance
or service. Follow the operating instructions on the label
attached to the furnace.
!
WARNING
CARBON MONOXIDE POISONING AND
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Never operate unit without a filter or with filter access door
removed.
!
WARNING
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