Service Guide

19
1b. Refrigerator: Auxiliary Code F-7 and Later
7) Startup/Cool Down–There is a slight delay, cabinet temperature appears on display.
Comp, ConFM, EvapFM, and MH energize. 2-hr. defrost timer starts.
a) EvapFMDiagnosis: Conrm EvapFM energizes. If not, conrm doors are closed
and DS engaged. Next, check for 115VAC at DSR #8 (GY) to #7(W). If115VAC is not
present, check DS continuity. If DS is engaged and contacts are open, replace DS.
If 115VAC is present, check for 115VAC at DSR #4(DBU) to neutral (W). If115VAC
is not present, check for 115VAC at DSR #6(W/BU) to neutral(W). If 115VAC is not
present at DSR #6 (W/BU) to neutral (W) check for 115VAC at CM #5 (W/BU) to
neutral (W). If115VAC is not present at CM #5 (W/BU) to neutral (W), replace CM.
If 115VAC is present at CM #5 (W/BU) to neutral (W) and not at DSR#6(W/BU) to
neutral (W), check wiring connections from CM to DSR. If 115VAC is present at DSR
#6 (W/BU) to neutral (W) and not at DSR #4 (DBU) to neutral (W), replace DSR.
If115VAC is present at DSR #4 (DBU) to neutral (W) and EvapFM is not energized,
check EvapFM blades for binding and EvapFM continuity.
b) Cabinet Light FGE (FGECR & FGECL) Diagnosis: Open the door and conrm CLS
is in the ON position. If not, move CLS to the ON position. LEDs turn on. If LEDs do
not turn on, check for 115VAC at CLS yellow (Y) wire to neutral(W) and CLS black
(BK) wire to neutral (W). If 115VAC is present at CLSyellow (Y) wire and not at CLS
black (BK) wire, conrm continuity of CLS switch. IfCLS is engaged and CLS switch
is open, replace CLS. IfCLS is engaged, contacts are closed, and 115VAC is present
at CLSblack (BK) wire to neutral (W) and LEDs are not on, check for 24VDC at
DCD black (BK) 24VDC wire to DCD red (R) 24VDC wire. If 24VDC is not present,
check continuity of DCD driver. If open, replace DCD driver. If 24VDC is present and
LEDs are not on, check wiring harness and wiring connections from DCD to LED.
Ifconnections are good and LEDs are not on, replace LEDs.
FS/HS CL Diagnosis: Open the door (upper on HS), conrm CL energizes. If not,
check for 115VAC at DSR #5 (BK) to neutral(W) and DSR #1 (Y) to neutral(W).
If115VAC is not present at DSR #5 (BK), conrm power supply and continuity of
power switch. If 115VAC is present at DSR #5 (BK) to neutral (W) and not present at
DSR #1 (Y) to neutral (W), conrm DS is open (not engaged). IfDS is disengaged
and contacts are closed (DSR energized), replace DS. IfDSR is de-energized and
115VAC is present at DSR#5(BK) and not at DSR #1 (Y) to neutral (W), replace
DSR. If 115VAC is present at DSR #1 (Y) and CL is not energized, replace CL.
c) CM Diagnosis: Cabinet temperature appears on display. If not, check for 115VACat
CM L2 (BK) to CM N3 neutral (W). If 115VAC is not present, check power switch,
power cord connections, and breaker/fuse. Conrm wiring connections are secure for
both CM L2 (BK) (power supply) and CMN3(W) (neutral). If 115VAC is present and
display is off, replace CM.