Memory Chips (Comfortbridge™ Furnace Only); Checking Flame Sensor - Maytag Amana ACVM97 Series Service Instructions Manual

SERVICING
MEMORY CHIPS (COMFORTBRIDGE™ FURNACE
ONLY)
On a ComfortBridge™ furnace using the shared data memory
chip is a "last resort". The CoolCloudHVAC™ App should be
used to populate shared data to the control via the "Shared
Data" menu under Furnace tab.

CHECKING FLAME SENSOR

A flame sensing device is used in conjunction with the ignition
control module to prove combustion. If proof of flame is not
present the control will de-energize the gas valve and "retry"
for ignition or lockout.
HIGH VOLTAGE
D ALL
ISCONNECT POWER BEFORE SERVICING OR
M
INSTALLING THIS UNIT. ULTIPLE POWER SOURCES MAY
F
BE PRESENT. AILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
1. Disconnect the flame sensor wire from the sensor.
2. Connect a micro-amp meter in series with this wire and
the sensor terminal.
3. Be sure the positive side of the meter is to the flame sen-
sor wire and the negative side of the meter is to sensor
terminal.
L
INE VOLTAGE NOW PRESENT
4. Place the unit into a heating cycle.
5. As soon as flame is established a micro-amp reading
should be evident once proof of flame (micro-amp reading)
is established, the hot surface igniter will be de-energized.
6. The Integrated Ignition controls will have 1 to 4 mi-
cro-amps. If the micro-amp reading is less than the
minimum specified, check for high resistance wiring
connections, sensor to burner gap, dirty flame sensor, or
poor grounding.
7. If absolutely no reading, check for continuity on all com-
ponents 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 sig-
nal. If this situation occurs the flame sensor must be cleaned
with steel wool.
68
WARNING
WARNING