Service Manual

27
Control Board (CB) Setting Menu
Category No. Item Range
IM-500SAB
Default
Compressor 37 Compressor Output Selection
DO NOT ADJUST
0: X8 (DC Relay) On
1: X1 (AC Relay) On
1
Anti-Slush
Control
50 Pump De-Energized Time
When temperature at evaporator (cube control)
thermistor drops to 37°F (3°C) in the freeze cycle,
pump de-energizes for the length of time set.
0 to 90 sec.
0=ignore, no anti-slush
(1 sec. increments)
0
51 Anti-Slush Control Water Supply Time
Time inlet water valve is energized while pump is
de-energized if pump de-energized time (CB Setting
50) is greater than 0.
0 to 5 sec.
(1 sec. increments)
0
Hard Water
Control
60 Integrated Value
If hard water control water supply time (CB Setting
61) is greater than 0: After evaporator (cube con-
trol) thermistor indicates temperature of 32°F (0°C)
in freeze cycle, inlet water valve energized starting
when percentage of freeze cycle termination tem-
perature and freeze cycle time integrated value has
been achieved.
DO NOT ADJUST
10 to 100%
(00=100)
(1% increments)
10
61 Hard Water Control Water Supply Time
Time inlet water valve is energized after integrated
value (CB Setting 60) conditions are met.
Before using this setting, follow the instructions to
improve ice clarity; see "III.G.2. Ice Clarity."
0 to 90 sec.
(1 sec. increments)
0
Water Tank
Ice Control
70
71
72
74
If control board thermistor temperature is above
the water tank ice control lower temperature setting
(CBSetting 74) and equal to or less than the water
tank ice control upper temperature setting (CB Set-
ting 70) when freeze cycle termination temperature
(CB Setting 2) is met, the hot gas valve energizes/
de-energizes/energizes for the times set by the hot
gas valve energized/de-energized times (CB Settings
71 and 72) to reduce bonding of the water tank to the
evaporator.
See Ranges Below See
Defaults
Below
Water Tank
Ice Control
& Ice Bridge
Control
70 Water Tank Ice Control Upper Temperature
See CB Setting 70, 71, 72, 74 description above.
Ice Bridge Control Temperature
See CB Setting 73 description below.
10 to 60°C
(1°C increments)
44
Water Tank
Ice Control
71 Water Tank Ice Control Hot Gas Valve Energized
Time
See CB Setting 70, 71, 72, 74 description above.
0 to 20 sec.
(1 sec. increments)
5
72 Water Tank Ice Control Hot Gas Valve De-Energized
Time
See CB Setting 70, 71, 72, 74 description above.
10 to 60 sec.
(1 sec. increments)
25
Ice Bridge
Control
73 Ice Bridge Control Hot Gas Valve De-Energized Time
Time hot gas valve is de-energized after 20 sec. in
harvest cycle if control board thermistor temperature
is above the ice bridge control temperature (CBSet-
ting 70) when freeze cycle termination temperature
(CB Setting 2) is met.
0 to 30 sec.
(1 sec. increments)
0