Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Water/Refrigeration Circuit Diagram
- II. Sequence of Operation and Service Diagnosis
- III. Controls and Adjustments
- A. Control Board
- B. Controls and Adjustments
- 1. Default Dip Switch Settings
- 2. BC1 (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. BC (Mechanical Stand-Alone) Shutdown Delay (S1 dip switch 8)
- 7. Factory Use (S1 Dip Switch 9 & 10)
- C. Power Switch and Control Switch
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Disposal
- VII. Technical Information
- A. Specification and Performance Data
- 1a. F-1001MAH
- 1b. F-1001MAH-C
- 2a. F-1001MWH
- 2b. F-1001MWH-C
- 3a. F-1001MRH
- 3b. F-1001MRH-C
- 4a. F-1501MAH
- 4b. F-1501MAH-C
- 5a. F-1501MWH
- 5b. F-1501MWH-C
- 6a. F-1501MRH
- 6b. F-1501MRH-C
- 7. F-2001MWH
- 8a. F-2001MRH
- 8b. F-2001MRH-C
- 8c. F-2001MRH3
- 9. F-2001MLH
- 10. FD-650MAH-C
- 11. FD-650MWH-C
- 12. FD-650MRH-C
- 13. FD-1001MAH-C
- 14. FD-1001MRH-C
- 15a. F-1001MAJ
- 15b. F-1001MAJ-C
- 16a. F-1001MWJ
- 16b. F-1001MWJ-C
- 17a. F-1001MRJ
- 17b. F-1001MRJ-C
- 18. FD-1001MAJ-C
- 19. FD-1001MRJ-C
- B. Wiring Diagrams
- A. Specification and Performance Data
40
2. LED Lights and Audible Alarm Safeties
The "POWER OK" LED indicates proper control voltage and will remain on unless a
control voltage problem occurs. For further details, see "II.A. Sequence of Operation Flow
Chart."
Sequence Step LED
Energized
Components Min. Max.
Fill Cycle WTRIN WV - -
Ice Purge Cycle GM GM, FM/FMR 5 min. 5 min.
Freeze Cycle (with rell) GM, WTRIN* (rell),
COMP
GM, Comp,
FM/FMR, LLV,
SLV, WV* (rell)
- *On until UFS closes.
Alarm sounds after
90 sec.
Drain Cycle FLUSH (Drain) DV 2 sec. 10 min.
The built-in alarm safeties shut down the unit.
No. of Beeps
(every 5 sec.)
Type of Alarm Reset Options
1 Low Water Safety
UFS open > 90 sec. after WV energized.
Automatic reset once water supply is restored
and UFS closes.
2 Control Switch
In "DRAIN" position longer than 15 min..
Automatic reset once the control switch is
moved to the "ICE" position.
3 High-Pressure Switch
First and sec. activation in 1 hour.
Automatic reset once pressure drops below the
high pressure threshold and the high pressure
switch closes.
4 High-Pressure Switch
Third activation in 1 hour.
Call for service. To avoid possible catastrophic
failure, it is recommended to leave the
icemaker off until this alarm is resolved.
Manual reset. Turn power off and on again.
5 Freeze Timer
WV off > 30 min. since last WV activation.
Manual reset. Turn power off and on again.
6 Low Voltage
(92VAC±5% or less)
"POWER OK" LED turns off if voltage
protection operates.
The control voltage safeties automatically reset
when voltage is corrected.
7 High Voltage
(147VAC±5% or more)
8 Gear Motor
CCR contacts fail to close.
Manual reset. Turn power off and on again.
9 BC1 (infrared sensor) fails (CB S1 dip switch
7 on)
BC2 (mechanical backup) actuator paddle
engaged.
Manual reset. Turn power off and on again.
Legend: BC1–bin control (infrared sensor); BC2–bin control 2 (mechanical backup);
CB–control board; CCR–compressor control relay; Comp–compressor; DV–
drain valve; FM–fan motor; FMR–fan motor-remote; GM–gear motor; L LV-liquid
line valve (MLH model); S LV –suction line valve (MLH model); UFS–upper oat
switch; WV–inlet water valve