Page 27
Page 27
SYMPTON
POSSIBLE CAUSE SUGGESTED CORRECTION
Unit will not run
Blown fuse in P.C.Board
Replace fuse & check for cause of
No LED lighted-up
blown fuse
Master switch in OFF position
Turn switch to ON position
Inoperative P.C.Board
Replace P.C.Board
Loose electrical connections
Check wiring
Bin full yellow LED glows with
Inoperative or dirty ice level control
Replace or clean ice level control
no ice in the bin
Water yellow LED glows
Shortage or too soft water
See remedies for shortage of water
or install a mineral salt metering
device
Red-alarm LED glows
High head pressure
Dirty condenser. Clean
Inoperative fan motor. Replace
Ambient temperature too low
Move unit in warmer location
Reverse rotation yellow LED blinks
Too hi evap. temperature
Check and charge refrigerant system
Shortage or lack of refrigerant
Reverse rotation yellow LED glows
Gear motor turns on reverse
Check gear motor capacitor
Too low gear motor rotating speed
Check rotor bearings, freezer
bearings and interior of freezer for
scores. Replace whatever worn or
damaged.
No rotation of gear motor
Check for power to drive motor
(16 A fuses)
Check for stator winding
Gear motor starts and stop
Check for correct operation of drive
after a while
motor magnetic sensor
Check for correct magnetic capacity
of magnetic cylinder
Water yellow LED and red LED
Inoperative Condenser Sensor
Replace it.
ON (steady) together
Water yellow LED and red LED
Inoperative Evaporator Sensor
Replace it.
blink together
Water yellow LED and red LED
Inoperative Ice Level Control
Replace it.
blink alternatively
Compressor cycles intermittently
Low voltage
Check circuit for overloading
Check voltage at the supply to the
building. If low, contact the power
company
Non-condensable gas in system
Purge the system
Compressor starting device with
Check for loose wires in starting
loose wires device
Low ice production
Capillary tube partially restricted
Blow charge, add new gas & drier,
after evacuating system with vacuum
pump
Moisture in the system
Same as above
Low water level in the freezer
Adjust to approx 20 mm below ice spout
Shortage of refrigerant
Check for leaks & recharge
Pitted or stained auger surface
Clean or replace auger
SERVICE DIAGNOSIS
