Service manual

MDT6N90
May 2001
Page 21
CONTROL SYSTEM DIAGNOSTICS
The control system consists of:
·
Control Board
·
Water Sensor
·
Ice Sensors
·
Vending Sensors
Explanation of Indicator Light Position On
Board
Name and Meaning of
Light or Reset
On at all times when the master switch is ON and machine is
connected to electrical power.
1 Power,
ON = Normal
On when ice level is low (unit making ice). 2 Bin Empty,
ON = Needs Ice
Normal 6 minute off/delay start. To prevent short cycling, the
machine will not restart after any shut off (except power to the
board) until 6 minutes have passed.
3 Off Timer,
ON = Unit cycling off
On when water level is low in the reservoir. 4 No Water,
ON = Trouble
1, Power Light
2, Bin Empty
Light
3, Delay Timer
Light
4, No Water
Light