30
F
LAME
S
ENSOR
(Q
UALIFIED
S
ERVICER
O
NLY
)
Under some conditions, the fuel or air supply can create a nearly
invisible coating on the flame sensor. This coating acts as an
insulator causing a drop in the flame sense signal. If the flame
sense signal drops too low the furnace will not sense flame and
will lock out. The flame sensor should be carefully cleaned by a
qualified servicer using emery cloth or steel wool. Following
cleaning, the flame sense signal should be as indicated in the
Specifications Sheet.
I
GNITER
(Q
UALIFIED
S
ERVICER
O
NLY
)
If the igniter and the surrounding air are at about 70°F and the
igniter wires are not connected to any other electrical components,
the resistance of the igniter should not exceed 200 ohms. If it does,
the igniter should be replaced.
B
URNERS
WARNING
T
O PREVENT PERSONAL INJURY OR DEATH, DO NOT REMOVE ANY INTERNAL
COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT.
E
LECTRICAL
COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS.
C
ONTACT A
QUALIFIED SERVICE AGENT AT ONCE IF AN ABNORMAL FLAME APPEARANCE
SHOULD DEVELOP.
Periodically during the heating season make a visual check of the
burner flames. Turn the furnace on at the thermostat. Wait a few
minutes, since any dislodged dust will alter the normal flame
appearance. Flames should be stable, quiet, soft and blue with
slightly orange tips. They should not be yellow. They should extend
directly outward from the burner ports without curling downward,
floating or lifting off the ports.
C
LEANING
(Q
UALIFIED
S
ERVICER
O
NLY
)
1. Shut off electric power and gas supply to the furnace.
2. Remove screws securing manifold to burner bracket.
Slightly pull manifold out and away from burner bracket.
Burners will drop. Re-secure manifold to burner bracket.
3. Tilt burners to slotted side of burner bracket. Rotate burners
clockwise to remove.
4. Use bottle brush to clean burner insert and inside of burner.
5. Replace burner (opposite of removal). Ensure burners are
fully seated on burner bracket tabs and are properly aligned.
6. Turn on electric power and gas supply to the furnace.
7. Check furnace for proper operation. Refer to
“Operational
Checks”
section to verify burner flame characteristics.
XVII. BEFORE LEAVING AN INSTALLATION
•
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.
XVIII. REPAIR AND REPLACEMENT PARTS
•
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 Amana distributor.
Functional Parts List-
Single Stage Gas Valve
Blower/Box Gasket
Natural Gas Orifice
Rollout Limit Switch
Propane Gas Orifice
Auxiliary Limit Switch
Burner
Heat Exchanger
Hot Surface Igniter
Door Switch
Flame Sensor
Transformer
Gas Manifold
Blower Wheel
Ignition Control
Blower Housing
Blower Mounting Bracket
Blower Cutoff
Pressure Switch
Blower Motor
Pressure Switch Hose
Motor Mount Bracket
Induced Draft Blower
Capacitor
Collector Box
