EdgeStar CWB8420DZ Service Manual page 44

Display "E0", "E1",
"E2", "E3", "E4",
"E5" , "E6" or "E7".
The alarm sounds
and the temperature
display flashes.
The icon "--" is lit up
and flashing on the
temperature display.

"E0" indicates the
communication error for 3 zone
models.

"E1" indicates that the temperature
sensor is open circuit.

"E2" indicates that the
temperature sensor is short
circuit.

"E3" indicates that the defrost sensor
in the evaporator is short circuit.

"E4" indicates that the defrost
sensor in the evaporator is open
circuit.

"E5" indicates the defrost heater
failure.

"E6" indicates the solenoid
valve failure.

E7" indicates the door switch failure.
Has the appliance door been open for
longer than 60 seconds? If not, then
the temperature has risen higher or
fallen lower than the temperature that
has been set. This could be due to:
The appliance door being opened too
often.
The ventilation opening being
covered or dirty.
A lengthy interruption to the power.
A large amount of bottles was
added to the unit.
The display temperature is out of
range.
Call for service.
If yes, close the door.
Do not open the door more than
necessary.
Clear the obstructions and clean
the dust.
Let the appliance work for a while
until the set temperature has been
reached.

Only temperatures within the
range of 0~99°F/-9~37°C can be
displayed. If the temperature is not
within this range "--" will be
displayed instead. This is normal.