Control Board Errors - Manitowoc RNS0244 Technician's Handbook

CONTROL BOARD ERRORS

The control board monitors the following:
Low water
Gear motor amperage
High pressure
Clogged drain
There are two different errors - Soft errors and hard errors.
• Soft errors can be reset by cycling power on/off.
• Hard errors can not be cleared by cycling power on/
off and must be reset by pressing the control board
reset button.
LO WATER - WATER LEVEL IS BELOW LOW WATER
SENSOR FOR MORE THAN 120 SECONDS
Soft Error
The control board stops the ice machine, energizes the
Lo Water & Service lights and leaves the water solenoid
energized. When water contacts the low water probe the
ice machine will resume ice making.
Hard Error
The water level sensor has 4 probes and the 2 longest
probes reach to the bottom of the water reservoir. When
no water is sensed on these probes within 60 seconds
of power up (or the water level sensor is disconnected
or shorted) the control board stops the ice machine and
energizes the Lo Water light. The ice machine must be
reset by pressing the control board reset button.
HI AMPS - GEAR MOTOR AMPERAGE EXCEEDS 3.8 AMPS
Soft Error
The control board stops the ice machine, energizes the Hi
Amps & Service lights and initiates a time delay period.
The ice machine will restart after the 60 minute delay. The
ice machine continues to run if amperage remains below
3.8 amps for six hours.
Part Number 000007661 11/16 151