Frigidaire LGUB2642LF2 Service Manual page 32

Electronic Control
Ice and Water Flow Chart 1
Are light bulbs
Yes
Burned out
No
Does light switch
Have continuity
When opened and
No continuity
When closed
Yes
Is 120 VAC present
On yellow /gray
Wire at fresh food
refrigerator switch
Yes
Is 120VAC present on
Yel./black wire at
J3 pin8 on main
board
Yes
Does yell./black
wire have
continuity intact
from connector to
switch
Yes
Repair /replace
control housing
harness and
retest
Replace bulbs
And retest
No
Replace switch
And retest
No
No
Replace ERF
2500++
And recheck
No
Repair /replace
Refrigerator
harness and
retest
Is 120VAC persent
on yel./greywire
At J2 Pin 6 on main
board
yes
Is refrigerator
Machine
compartment
Connections
intact
Is yellow /grey
Wire continuity
Intact from
connection
To switch
Repair /Replace
Control housing
Harness and retest
3-10
Relpace ERF
No
2500++
and recheck
Repair
No
Connections
and retest
Yes
Repair /replace
No
Refrigerator
harness and
retest
Yes