MDT3F & MDT4F
May 2001
Page 21
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
To check the electrical system, first check the lights on the circuit board.
1. Remove the top panel.
2. Remove the left side panel.
3. Remove the control box cover.
Service Diagnosis: Circuit Board
1
2
3
4
