Part Number: 9294839 03/17
21
Section 3
Operation
R290 Temperature Control & Display Operation
Press upper or lower right button.
• Display show actual set-point (blinking).
» If buttons untouched for 3 seconds returns to normal.
• Increase set-point by pressing upper button. Max value
depends on parameters in control.
• Decrease set-point by pressing lower button. Min value
depends on parameters in control.
» If buttons untouched for 3 seconds returns to normal
and stores new set-point.
Press upper left button for 5 seconds.
• Start defrost.
Press lower left button for 5 seconds.
• Unit goes into stand-by mode.
» The display will read off, then a period.
• Press the lower left button again for 5 seconds.
» The display will read on.
» The unit will then start up in the defrost mode, and
display will read dEF.
R290 Power Switch
Two and three door units are equipped with a power
disconnect switch located behind the louvered end panel.
Switch must be in the on position for the unit to operate. If
the switch is turned off, then returned to the on position,
the unit will enter a defrost cycle and the display will read
dEF.
R290 Energy Saver Switch
Select freezers are equipped with an energy saver switch
for service use. It is located in the electrical box behind
the front shroud. It controls the length of time that heat
is applied to the door perimeter. The normal operating
position for this switch is the on position, providing the
shortest amount of time. If excessive condensation is
observed on the door opening, switch to the off position
with the help of an authorized service agent. The off
position will increase the length of time the door heater is
on.
R290 Temperature Alarm
The alarm will flash “HI” or “LO” 90 minutes after the unit
has reached its alarm temperature point or after any
power interruption if the temperature is above or below
the alarm set points. Refrigerators are factory set at mid-
range to maintain about 38ºF (3ºC) box temperature. The
high refrigerator temperature point is 50°F (10°C). The low
refrigerator temperature point is 25°F (-4°C). Freezers are
factory set at mid-range to maintain about -2ºF (-19ºC) box
temperature. The high freezer temperature point is 20°F
(-7°C). Freezers do not have a low temperature point.
R290 EVAPORATOR FAN OPERATION
During normal operation the evaporator fan may cycle
and/or pulse independently of the compressor. Consult
Technical Support at 1-844-724-CARE if you are unsure of
the proper function.
Cooling Cycle
Defrost Cycle
Compressor
On
Compressor
Off
Compressor
Off
Ev
ap F
an
On
Ev
ap F
an
O
ff
Ev
ap F
an
On
Ev
ap F
an
O
ff
Ev
ap F
an
On
Ev
ap F
an
O
ff
Refrigerator
X
Cycles On 2-Min,
Off 2-Min
X
Freezer
X
X
X
