Service manual

SERVICING
55
S-314 CHECKING FLAME SENSOR
A flame sensing device is used in conjunction with the igni-
tion control module to prove combustion. If a microamp
signal is not present the control will de-energize the gas
valve and "retry" for ignition or lockout.
The drawing right illustrates, the approximate distances for
the pilot assembly to the gas inshot burner. You will note
they are not in the main burner stream, but along the carry
over ports.
Honeywell Smart Valve Systems
WARNING
Disconnect Electrical Power Supply:
1. The Honeywell "Flame Sense Measurement Kit", Amana
part # R9900026, is required to correctly measure the
microamp flame proving current.
2. Connect the Honeywell "Flame Sense Measurement
Kit", Amana part # R9900026, as instructed in the kit
instructions.
With Power ON:
WARNING
LINE VOLTAGE NOW PRESENT.
3. Place the unit into a heating cycle.
4. As soon as flame is established a microamp reading
should be evident once proof of flame (microamp read-
ing) is established, the hot surface ignitor will be de-
energized.
5. The minimum microamp reading is 0.12 microamps for
SV9500 valves and 1.40 microamps for SV9501 valves.
If the microamp reading is less than the minimum speci-
fied, check for high resistance wiring connections, the
distance between the sensor and burner, flame sensor
connections or poor grounding.
6. If no reading, check for continuity on all components
and if good - replace ignition control module.
NOTE: Contaminated fuel or combustion air can create a
nearly invisible coating on the flame sensor. This coating
works as an insulator causing a loss in the flame sense
signal. If this situation occurs the flame sensor must be
cleaned with emery cloth or steel wool. Do not use sand
paper, the silicone in sand paper will further contaminate
the sensor.
"A"
CORRECT
POSITION
DIMENTION
"A" CANNOT
EXCEED 1/4"
Burner Assembly