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23
10) Rell Cycle – "GM", "COMP", and "WTRIN" LEDs are on.
LFS opens. WVenergizes and 90-sec. FT starts. Comp or LLV/SLV (MLH model), GM,
CCR/GMPR, and FM/FMR continue. LFS closes. Nothing occurs at this time. Reservoir
continues to ll until UFS closes. When UFS closes, WV de-energizes, 90-sec. FT
terminates, and 30-min. FZT starts. If UFS remains open longer than 90 sec. after LFS
opens, FT exceeded and CB sounds a 1-beep alarm. WVremains energized until UFS
closes. Alarm resets automatically when UFS closes.
Diagnosis – Conrm that the water level has dropped and the UFS and LFS are open.
See "II.E.1. Float Switch Check." Check that "WTRIN" LED is on. IfLFS is open and
"WTRIN" LED is off, replace CB. If "WTRIN" LED is on, check that the reservoir lls.
Ifnot, check water supply line shut-off valve, water lters, and WVscreen. If"WTRIN"
LED is on and WV is off, check CB K2 #8(O) to a neutral (LBU) for 24VAC. If 24VAC
is not present, check CB K2 #9(W/R) to a neutral (LBU) for 24VAC. If 24VAC is
present on CB K2 #9 (W/R)and not on CB K2#8 (O), replace CB. If 24VAC is
present on CB K2#8(O),check continuity through WV solenoid. If open, replace WV.
IfWV is energized and rell exceeds FT with no water in the reservoir, check for DV
leaking. Ifreservoir is full and overowing check for open UFS. See "II.E. Float Switch
Check and Cleaning." If UFS is closed, check that WVdeenergizes. If not, check
CB K2 #8(O) to a neutral (LBU) for 24VAC. If 24VAC is present, replace CB. If WV
de-energizes and water continues to ll the reservoir, replace WV.
Note: Each time UFS closes, 30-min. freeze timer starts. The 30-min. freeze timer
resets when UFS closes again. If UFS does not close again within 30 min., CB
shuts down the unit and sounds a 5-beep alarm every 5 sec.
See "III.A.2 LED Lights and Audible Alarm Safeties."
FT: 90-Sec. Low Water Safety Timer – When LFS opens, 90-sec. low water safety
timer starts. If UFS does not close within 90 sec. after LFS opens (FTexceeded),
CBsounds a 1-beep alarm and a 90-sec. shutdown cycle starts
See "III.A.2.LED Lights and Audible Alarm Safeties." Comp or LLV/SLV (MLH model)
de-energizes. GM, CCR/GMPR, and EH continue. 90-sec. purge timer terminates, GM,
EH, and CCR/GMPR de-energize. WV and 1-beep alarm continue until UFS closes.
11) Drain Cycle
a) 1-in-1 Drain Cycle: DV energizes once every hour when the 1-in-1 drain cycle is
activated (S1 dip switch 4 in the "OFF" position (factory default position)). GM,
FM/FMR, Comp, LLV/SLV (MLH model), continue. DV energizes for 2 sec. every
hour. This setting is recommended for optimum icemaker performance. The 1-in-1
drain cycle allows any sediment to drain from the evaporator without interrupting the
icemaking process.
b) 1-in-12 Drain Cycle (optional): DV energizes once every 12 hours when the 1-in-12
drain cycle is activated (S1 dip switch 4 in the on position (optional)). 12-hour drain
cycle timer terminates, Comp or LLV/SLV (MLH model) de-energize. GM, and
FM/FMR continue. The 5-min. ice purge timer starts. When the 5-min. ice purge
timer terminates, GM and FM/FMR de-energize. 10-min. DT starts, DV energizes.
After 10-min. DT terminates, DV de-energizes icemaking process restarts and 12-
hour drain cycle timer starts.
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