46
c)
Comp Diagnosis:
After 5 min. confirm that Comp energizes. If Comp does not
energize, check for 115VAC at CB K1 connector pin #10 (GY wire) to a neutral (W
wire). If 115VAC is not present, replace CB. If 115VAC is present, check for 115VAC
at Comp relay black (BK wire) and red (R wire) to a neutral (W wire). If 115VAC is
not present on the black (BK wire), check wiring connections. If 115VAC is present
on black (BK wire) but not on the red (R wire), Comp relay contacts are open.
Confirm 115VAC on Comp relay coil gray (GY wire) to a neutral (W wire). If 115VAC
is present, and contacts are open, replace Comp relay. Next, if 115VAC is present
on the red (R wire), check continuity of Comp overload. If overload is closed, check
start capacitor, start relay, and Comp motor winding. If overload is open, let overload
cool and reset. Replace overload if it does not reset. When overload closes, if Comp
still does not start, check start capacitor, start relay, and Comp motor winding.
d1)
ConFM Diagnosis: Freezer (auxiliary code P-5 and earlier):
If ConFM does
not energize, check for 115VAC at CB K9 connector pin #2 (BR wire) to a neutral
(W wire). If 115VAC is not present, replace CB. Next, check that the fan blade is not
binding and that ConFM continuity is good.
d2)
ConFM Diagnosis:
RFH1-SSB(-HS)(-HSE) Freezer:
If ConFM does not energize,
check for 115VAC at CB K1 connector pin #10 (GY wire) to a neutral (W wire).
If 115VAC is not present, replace CB. If 115VAC is present, check for 115VAC at
Comp relay black (BK wire) and red (R wire) to a neutral (W wire). If 115VAC is not
present on the black (BK wire), check wiring connections. If 115VAC is present on
black (BK wire) but not on the red (R wire), Comp relay contacts are open. Confirm
115VAC on Comp relay coil gray (GY wire) to a neutral (W wire). If 115VAC is
present, and contacts are open, replace Comp relay. Next, check that the fan blade
is not binding and that ConFM continuity is good.
e)
DrH, PH, and MH Diagnosis: RFH1-SSB(-HS)(-HSE) Freezer:
If heaters do not
energize, check for 115VAC at CB K9 connector pin #2 (BR wire) to a neutral (W
wire). If 115VAC is not present, replace CB. If 115VAC is present, check PH/MH
switch. Next, check continuity of heaters
C.
Defrost Termination: Defrost Recovery Step 2
1a)
Freezer (auxiliary code P-5 and earlier)–LEDs 4 (Comp) and 5 (ConFM) are on.
LED 3 (EvapFM on) off:
DTh cools to 70
°
F (21
°
C) or lower, EvapFM energizes.
1b)
RFH1-SSB(-HS)(-HSE) Freezer–LEDs 4 (Comp and ConFM) and 5 (DrH, PH,
and MH) are on. LED 3 (EvapFM on) off:
DTh cools to 70
°
F (21
°
C) or lower,
EvapFM energizes.
a)
EvapFM Diagnosis:
Confirm evaporator temperature is at or below 70
°
F (21
°
C).
Check DTh status. See "III.C. Thermistor Check." If EvapFM does not energize,
make sure "door" is not displayed on DB. If so, check that CB dip switch #3 is
in the factory default position. See "II.E.4.c) Door Switch Type (S3 dip switch
3)." Check door switch continuity. Next, check for 115VAC at CB K1 connector
pin #3 (DBU wire) to a neutral (W wire). If 115VAC is not present, replace CB.
If 115VAC is present, check EvapFM blade for binding and EvapFM continuity.