Hoshizaki MRH/3 Ice Maker User Manual


 
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7) Pump-Out Cycle – LEDs 1, 3, and 2 are on (10/20 second pump-out). Timing of the
rst pump-out is dependent on CB. "E" CB rst pump-out is after the rst freeze cycle.
"G" CB rst pump-out is determined by S4 dip switch 5 & 6. See the table below.
"E" & "G" Control Board Settings 1st Pump-Out
S4 Dip Switch Setting
Pump-Out
Frequency
"E" Control Board "G" Control Board
No. 5 No. 6
OFF OFF Every cycle After 1st freeze cycle After 2nd freeze cycle
ON OFF Every 2 cycles After 3rd freeze cycle
OFF ON Every 5 cycles After 6th freeze cycle
ON ON Every 10 cycles After 11th freeze cycle
Comp and FMR continue, HGV energizes. If S4dip switch 3 & 4 are set to 3 off and 4
on, LED 4 turns on and WV energizes. FM and LLVde-energize. PM stops for 2 sec.,
then reverses for 10/20 sec. depending on pump-out timer (S4 dip switch 3 & 4) setting.
When the pump-out timer terminates, pump-out is complete. The pump-out frequency
control (S4 dip switch 5 & 6) is factory set, and generally no adjustment is required.
However, the pump-out frequency control can be set to have a pump-out occur every
cycle, or every 2, 5, or 10 cycles. For details, see "III.C.4. Pump-Out Frequency Control
(S4 dip switch 5 & 6)."
Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above),
disconnect CB black K5 connector (FS connector) after 5 min. of freeze. Check that PM
stops and re-starts and water is owing down the drain through CV. If PM does not stop
and re-start, check that CB LEDs 1, 3, and 2 are on. If not, replace CB. IfLEDs1,3,
and 2 are on and PM does not energize, check for 115VAC at
CB K1 #5 (DBU) to neutral (W). If 115VAC is not present, replace CB.
If 115VAC is present, make sure the drain line is not clogged and that CV is clean and
operating properly.
Conrm FM and LLV de-energize. If FM or LLV is energized with LEDs 1, 3, and 2 on,
replace CB.
8) Normal Harvest Cycle – Same as the initial harvest cycle. Return to step 5 above.
Note: Appliance continues to cycle until TBC or MBC is satised or power is turned off.
The appliance always restarts at the 1-min. ll cycle.