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2)
Harvest Cycle:
Comp 30-sec. delay timer terminates, 20-sec. WV delay timer starts,
Comp and AMD (opening) energize. HGV continues. 20-sec. WV delay timer terminates,
WV energizes. WV 24 sec. on timer starts. AMD de-energizes when AMPS activates
at water pan assembly fully open position. Once ET reaches 41°F (5°C), HGV
de-energizes, FM and AMU (closing) energize. 24-sec. WV on timer terminates, WV
de-energizes. AMU (closed) de-energizes when AMPS activates at water pan assembly
fully closed position. Note: HGV de-energizes when ET reaches 41°F (5°C). During a
start up scenario this occurs at the same time AMU (closing) and FM energize. Evap
starts cooling before harvest cycle is complete. Harvest cycle is complete once AMPS
indicates the water pan assembly is fully closed (up).
a)
Comp Diagnosis
: Check that Comp energizes and evaporator is warming. If not,
check for 115VAC at CB CN3 #9 orange (O) to neutral (W). If 115VAC is not present,
check for 115VAC at CB CN2 #3 red (R) to neutral (W). If 115VAC is not present, at
CN2 #3 (R), see "1)a) Startup Cycle Diagnosis" above. If 115VAC is present at CB
CN2 #3 red (R) and not at CB CN3 #9 orange (O), replace CB. If 115VAC is present
at CB CN3 #9 orange (O),
check for 115VAC at CR solenoid. If 115VAC is present,
confirm contacts are closed. If not, replace CR. If CR contacts are closed, check
Comp external protector, Comp start capacitor, start relay, and motor winding.
b)
HGV Diagnosis
: If Comp is energized and evaporator is not warming, check that
HGV energizes and opens. Check for 115VAC at CB CN3 #3 (P) to neutral (W).
If 115VAC is not present, replace CB. If 115VAC is present, check for 115VAC at
HGV coil and check HGV coil continuity. Replace as needed.
c)
AMD Diagnosis
: AMD energizes (opens). If not, check for 115VAC at CN5 #3 (GY)
to neutral (W). If 115VAC is not present, replace CB. If 115VAC is present, check AM
actuator arms for binding, spring connections, capacitor, and motor windings.
If AMPS does not indicate water pan assembly is fully open within 3 min. display
shows "EE" and icemaker shuts down for 60 min. If error recurs after icemaker
resumes operation, display shows "EE" again and icemaker shuts down. See "III.F.
Error Codes."
d)
WV Diagnosis
: 20-sec. WV delay timer terminates. WV energizes. Check that
water enters the water tank. If not, check that the water supply line shut-off valve
is open and screens or external filters are clear. Check for 115VAC at CB CN3 #7
(V) to neutral (W). If 115VAC is not present, replace CB. If 115VAC is present and
WV does not energize, check for 115VAC at WV. If 115VAC is present, check coil
continuity. If open, replace WV. If 24-sec. WV on timer terminates, and WV does not
de-energize, check for 115VAC at CB CN3 #7 (V) to neutral for 115VAC. If 115VAC
is present, (WV does not de-energize during harvest), replace CB. If 115VAC is not
present, check for WV leaking by. Clean or replace WV.
