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 Layout
- B. LED Lights and Audible Alarm Safeties
- C. Settings and Adjustments
- 1. Default Dip Switch Settings
- 2. Harvest Timer (S4 dip switch 1 & 2)
- 3. Pump-Out Timer (S4 dip switch 3 & 4)
- 4. Pump-Out Frequency Control (S4 dip switch 5 & 6)
- 5. Harvest Pump Timer Operation (S4 dip switch 7)
- 6. Factory Use (S4 dip switch 8)
- 7. Freeze Timer (S4 dip switch 9 & 10)
- 8. Float Switch Selector (S5 dip switch 1)
- 9. Refill Counter (S5 dip switch 2, 3, and 5), Program Selector (4)
- D. Switches
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
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Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above), after
5min. of freeze disconnect CB black K5 connector (FS connector). Check that PM
stops and re-starts and that DV energizes and water is owing down the drain through
DV. If PM does not stop and re-start and DV does not energize, check that CB LEDs
1, 3, and 2 are on. If not, replace CB. IfLEDs1,3, and 2 are on and PM and DV do
not energize, check for 115VAC at CB K1 #5 (DBU) to neutral (W). If 115VAC is not
present, replace CB. If 115VAC is present, check for 115VAC at X12 relay #8 (DBU) to
neutral (W). If 115VAC is not present, check that X10 relay is de-energized. Ifnot, check
X11relay status. If X11 relay is energized, check that S4 dip switch 3 and 4 are not set
to 3 on and 4off positions, if not and X11 is energized, replace CB. Next, If X11 relay is
de-energized and X10 relay is energized, replace X11 relay (contacts sticking).
If X10 relay is de-energized, check for 115VAC at X10 relay terminal #5 (DBU) and
terminal #1 (DBU) to neutral (W). If 115VAC is present at terminal #5 (DBU) and not at
terminal #1 (DBU), replace X10 relay.
If 115VAC is present at X12 relay #8 (DBU) to neutral (W):
PM: Check for 115VAC at X12 relay #6 (BR or BK) and X12 relay #4 (Y) to neutral (W).
If115VAC is present at X12 relay #6 (BR or BK) and not at X12 relay #4 (Y), replace
X12 relay. If 115VAC is present at X12 relay #4 (Y), check PM capacitor, motor winding,
and impeller for binding.
DV: Check for 115VAC at X12 relay #5 (DBU) and X12 relay #3 (GY) to neutral (W).
If115VAC is present at X12 relay #5 (DBU) and not at X12 relay #3(GY), replace X12
relay. If 115VAC is present at X12 relay #3 (GY), check DV solenoid, replace as needed.
Next, conrm that the drain line is not clogged.
Conrm FM and LLV de-energize. If FM or LLV are energized with LEDs 1, 3, and 2 on,
replace CB.
8) Normal Harvest Cycle – Same as the initial harvest cycle. Return to step 5a) above.
Note: Appliance continues to cycle until TBC or MBC is satised or power is switched
off. The appliance always restarts at the 1-min. ll cycle.