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T
ROUBLESHOOTING
& M
AINTENANCE
C
LEANING
(Q
UALIFIED
S
ERVICER
O
NLY
)
1. Shut off electric power and gas supply to the furnace.
2. Disconnect the rollout limit wires, flame sensor wire, and
disconnect the igniter plug.
L
ABEL
ALL
WIRES
PRIOR
TO
DISCONNECTION
WHEN
SERVICING
CONTROLS
.W
IRING
ERRORS
CAN
CAUSE
IMPROPER
AND
DANGEROUS
OPERATION
.V
ERIFY
PROPER
OPERATION
AFTER
SERVICING
.
CAUTION
3. Remove four (4) screws securing the burner box top.
T
HE
IGNITER
IS
FRAGILE
AND
CAN
BE
EASILY
DAMAGED
.U
SE
EXTREME
CAUTION
WHEN
REMOVING
THE
BURNER
BOX
TOP
.
CAUTION
4. Remove the screws securing the burners to the burner
bracket. Remove the burners.
5. Use bottle brush to clean burner insert and inside of
burner.
6. Replace burner (opposite of removal). Ensure burners
are fully seated on burner bracket and are properly
aligned. Replace burner box top. Reconnect wiring.
7. Turn on electric power and gas supply to the furnace.
8. Check furnace for proper operation. Refer to “Operational
Checks” section to verify burner flame characteristics.
B
EFORE
L
EAVING
AN
I
NSTALLATION
• Cycle the furnace with the thermostat at least three
times. Verify cooling and fan only operation.
• Review the Owner’s Manual with the homeowner and
discuss proper furnace operation and maintenance.
• Leave literature packet near furnace.
R
EPAIR
AND
R
EPLACEMENT
P
ARTS
• When ordering any of the listed functional parts, be sure
to provide the furnace model, manufacturing, and serial
numbers with the order.
• Although only functional parts are shown in the parts
list, all sheet metal parts, doors, etc. may be ordered by
description.
• Parts are available from your distributor.
Functional Parts List-
Gas Valve Blower/Collector Box Gasket
Natural Gas Orifice Primary Limit Switch
Propane Gas Orifice Rollout Limit Switch
Burner Auxiliary Limit Switch
Hot Surface Igniter Heat Exchanger
Flame Sensor Door Switch
Gas Manifold Transformer
Ignition Control Blower Wheel
Blower Mounting Bracket Blower Housing
Pressure Switch Blower Cutoff
Pressure Switch Hose Blower Motor
Induced Draft Blower Motor Mount Bracket
Collector Box Capacitor