4)Initial Freeze Cycle – LED 1 is flashing and LEDs 3 and 2 are on. Comp and
102-sec. WVT (WV continues another 52 sec. in freeze cycle) continue. FM and PM energize. HGV de‑energizes. When 102-sec. WVT terminates, LED 3 turns off and WV de-energizes. CB monitors the cooling of the evaporator via the thermistor located on the evaporator for freeze termination. When the thermistor drops to 27°F (-3°C), CB reads 6.8 kΩ from the thermistor and starts 3-min. FT. 27°F (-3°C) or lower must be maintained the entire 3 min. If reading rises above 27°F (-3°C) before 3-min. FT terminates, the 3-min. FT resets. When 27°F (-3°C) or lower is maintained for 3 min., 5-min. FTT starts.
a)Comp Diagnosis: If Comp de-energizes, check PTC relay continuity. If open, replace PTC. If closed, check Comp external protector and motor winding continuity. Replace as needed. If Comp is energized but evaporator is not cooling, check for an inefficient Comp. See "VIII.B. Performance Data."
b)FM and PM Diagnosis: If FM and PM do not energize, check for 115VAC at CB
B1 (P) to neutral (W) and at CB A1 (DBU) to neutral (W). If 115VAC is present at CB B1 (P) to neutral (W) and not at CB A1 (DBU) to neutral (W), replace CB.
If 115VAC is present at CB A1 (DBU) to neutral (W), check FM or PM motor winding continuity, fan blade or PM impeller for binding, and PM capacitor.
c)HGV and WV Diagnosis: Confirm HGV and WV de-energize. If HGV is energized, check for 115VAC at CB B1 (P) to neutral (W). If 115VAC is present after PM energizes, replace CB. If 115VAC is not present and HGV is bypassing, replace HGV. If LED 3 does not turn off and WV does not de-energize 52 sec. after freeze cycle starts, check for 115VAC at CB A2 (O) to neutral (W). If 115VAC is present 52 sec. or later after PM energizes, replace CB. If 115VAC is not present and WV is leaking by, replace WV.
d)Initial Freeze Cycle Termination Diagnosis: 5-min. FTT terminates, harvest cycle starts. If not, check evaporator temperature where thermistor is mounted and check the thermistor. See "II.E. Thermistor Check." If evaporator temperature is below
27°F (-3°C) for more than 8 min. and freeze does not terminate, replace CB.
5)Normal Harvest Cycle – LED 1 is flashing and LED 3 is on. Comp continues. HGV and WV energize. FM and PM de‑energize. 102 -sec. WV timer starts. CB monitors the warming of the evaporator via the thermistor located on the evaporator. When the thermistor reaches 47°F (7°C), CB reads 4.5 kΩ from the thermistor and turns harvest termination over to the 50-sec. HT. WV is energized during harvest for a maximum of 102 sec. or the length of harvest, whichever is shorter.
Note: Appliance continues to cycle until BC is satisfied or power is turned off. The appliance always restarts at the initial harvest cycle.
a)Comp Diagnosis: Check that evaporator is warming. If not, confirm Comp is energized. If not, check for 115VAC at PTC and check PTC relay continuity. If open, replace PTC. If closed, check Comp external protector and motor winding continuity. Replace as needed.
