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4) 1-Min. Fill Cycle – LED 4 is on. WV and X11 relay energize. After 1 min., CB checks for
a closed FS. If FS is closed, the harvest cycle begins. If harvest cycle begins (Comp,
HGVs, and FMR energized), continue to step 5a. If FS is open, WV remains energized
until FS closes (low water safety protection during initial start up and at the end of each
harvest). Diagnosis: 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 K1 #6 (O) 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 WV coil continuity. If open, replace WV. If the water tank fills, but the appliance
fails to start harvest (Comp energized), check for open FS. See "II.E. Float Switch
Check and Cleaning." If FS is closed and CB fails to start the harvest cycle after 1 min.,
replace CB.
5a) Initial Harvest Cycle – LEDs 1, 4, and 2 are on. WV and X11 relay continue. Comp,
FMR, HGVs, and X10 relay energize. CB monitors the warming of the evaporator via
the thermistor located on the suction line. When the thermistor reaches 48°F (9°C),
CB reads 3.9 kΩ from the thermistor and turns harvest termination over to the harvest
timer (S4 dip switch 1 & 2 and S5 dip switch 4). WV and X11 relay are energized during
harvest for a maximum of 6 min. or the length of harvest minus HPT setting (S4 dip
switch 6), whichever is shorter. See step 5b below.
a) Comp Diagnosis: Check that evaporator is warming. If not, confirm that Comp
energizes. If not, check for 115VAC at CB K1 #1 (V) to neutral (W). If 115VAC is not
present, check for 115VAC at CB K1 #10 (BR) to neutral (W). If 115VAC is present
at #10 (BR) and not at #1 (V), replace CB. If 115VAC is present, check for 115VAC
at MC solenoid (SRK). If 115VAC not present, check wire harness connections.
If 115VAC is present, confirm contacts are closed. If not, replace MC. If MC contacts
are closed, check Comp external overload, Comp start and run capacitors, Comp
start relay (single phase), and Comp motor windings.
b) HGVs Diagnosis: If Comp is energized and evaporator is not warming, check
that HGVs energize and open. Check for 115VAC at CB K1 #2 (P) to neutral (W).
If 115VAC is not present, replace CB. If 115VAC is present, check for 115VAC at
HGVs coil (KMS and SRK) and check HGVs coils continuity. Replace as needed.
c) LLVs Diagnosis: Confirm that both LLVs are de-energized (KMS and SRK) and
closed (not bypassing). If energized, replace CB. If de-energized and bypassing,
replace LLVs (KMS and SRK).
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