Service Manual

10
II. Sequence of Operation and Service Diagnosis
A. Sequence of Operation Flow Chart
1. Icemaking and Drain Cycle
F-330BAJ(-C) Sequence Flow Chart
1-in-1 drain cycle. DV opens for 2 sec. every hour (CB S1 Dip Switch 4). Icemaker status does not change.
LFS closed UFS closed FZT starts FT terminated WV de-energized
3. 1-in-12 Drain Cycle
& Restart (optional)
UFS open LFS open (WV on) FT starts (90 sec.) FZT terminated WV energized Comp continues GM continues FM continues
1. Startup
2. Ice Purge Cycle
WV energized
Comp energized GM continues FM continues
2. 1-in-1 Drain Cycle
Comp de-energized GM continues FM continues
1. Fill Cycle
3. Freeze Cycle
LFS closed UFS closed FZT starts (30 min.) FT terminated WV de-energized Comp continues GM continues FM continues
Low Water Safety Purge Timer
UFS open WV energized Comp de-energized GM continues FM continues
DV energized GM de-energized FM de-energized
10-min. DT terminated DV de-energized 1-in-12 DT reset
5 min.
4. Icemaker Restart
2. Ice Purge Cycle
3. 10-Min. Drain
If Fill > 90 sec. FT 1-beep alarm sounds WV continues When UFS closes alarm resets and 2. Ice Purge Cycle starts.
FT Maximum 90 sec.
4. 1-in-12 Drain Cycle - Although the factory default 1-in-1 drain cycle is recommended, a 1-in-12 drain cycle is available. For 1-in-12 drain cycle sequence, see "3. 1-in-12 Hour Drain Cycle & Restart (optional)."
Rell
FT Maximum 90 sec.
90 sec. FT exceeded, 90 sec. PT starts and 1-beep alarm sounds
90. sec. PT terminates unit shuts down and 1-beep alarm continues. When UFS closes, alarm resets and 2. Ice Purge Cycle starts.
WV continues GM de-energized FM de-energized
1. DT Initiates DC
To bypass, press the "SERVICE" button after GM starts.
5 min.
to "1. Fill Cycle" above
90 sec.
(CB S1 dip switch 4 "ON")
FT off (90 sec.)
5 or 30 sec. (S1 Dip Switch 7)
EH energized GM energized FM energized
1. DT Initiates DC Continued uninterrupted operation
DV energizes for 2 sec.
2. Continued Operation
DV de-energizes, no interruption in ice production
30-min. FZT
Startup
FZT exceeded (LFS does not open): CB shuts down icemaker and sounds a 5-beep alarm.
Legend: BC-bin control CB-control board Comp-compressor DC-drain cycle DT-drain timer DV-drain valve EH-evaporator heater FM-fan motor
FT-ll timer (low water safety) FZT-freeze timer GM-gear motor LFS-lower oat switch PT-purge timer UFS-upper oat switch WV-inlet water valve
Low Water Safety Shutdown
(CB S1 dip switch 4 "OFF")
Normal Operation
Power Switch "ON" Control Switch in "ICE" POWER OK LED on BC Closed