Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Water/Refrigeration Circuit Diagram
- A. Construction
- B. Icemaking Unit
- C. Water/Refrigeration Circuit Diagram
- II. Sequence of Operation and Service Diagnosis
- A. Sequence of Operation Flow Chart
- 1. Icemaking and Drain Cycle
- 2. Shutdown
- B. Service Diagnosis
- 1. Ice Production Check
- 2. Diagnostic Procedure
- C. Control Board Check
- D. Bin Control Check
- E. Float Switch Check and Cleaning
- F. Diagnostic Tables
- III. Controls and Adjustments
- A. Control Board
- B. Controls and Adjustments
- 1. Default Dip Switch Settings
- 2. Infrared Sensor Shutdown Delay (S1 dip switch 1, 2, 3).
- 3. Drain Frequency Control (S1 dip switch 4)
- 4. Continuous Dispensing Timer (S1 dip switch 5 & 6)
- 5. Bin Control Selector (S1 dip switch 7)
- 6. Agitation and Ice Purge Timer (S1 dip switch 8)
- 7. Mechanical Shutdown Delay (S1 dip switch 9)
- 8. Factory Use (S1 Dip Switch 10)
- C. Power Switch and Control Switch
- IV. Refrigeration Circuit and Component Service Information
- A. Refrigeration Circuit Service Information
- B. Component Service Information
- V. Maintenance
- VI. Disposal
- VII. Technical Information
- A. Specification & Performance Data Sheets
- 1. F-300BAJ
- 2. F-500BAJ
- B. Wiring Diagrams
- 1. F-300BAJ
- 2. F-500BAJ
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10) Rell Cycle – "GM", "COMP", and "WTRIN" LEDs are on.
LFS opens. WVenergizes and 90-sec. FT starts. Comp, GM, CCR, and FM 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.
IfUFS 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. Float Switch Check and Cleaning." 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 and FM de-energize. GM
and CCR continue. 90-sec. purge timer terminates, GM and CCR de-energize. WV and
1-beep alarm continue until UFS closes.