11
B. Cabinet Temperature and Defrost
1. Default Settings
The default CT setpoint is 39°F. The default CT display scale setting is °F.
NOTICE!
Do
not change the CT display scale from °F to °C. All temperature related values in the
service menu must be changed manually if the CT display scale is changed from
°F to °C.
a) Adjusting the Temperature Setpoint
The CT setpoint is adjustable between 34°F and 52°F. Follow the directions below to
adjust the CT setpoint.
Note: If the display module panel is locked, press and hold the "-" button and the power
button until "UnL" appears briefly on the display module.
1) Press and hold the "P" button until Comp icon flashes on DM.
2) Press the "-" or "+" button until the desired value is displayed.
3) Press the "P" button to save the new CT setpoint and return to the CT display. If no
button is pressed for 15 sec. after selecting the new CT setpoint, DM returns to
CT display and the new CT setpoint is saved.
b) Manual Defrost
To initiate a manual defrost, press and hold the "+" button until the defrost icon turns on.
30-min. DT starts. If Comp run time < 3 min., Comp icon and Comp continue until 3-min.
Comp run timer terminates. Once 3-min. Comp run timer terminates, Comp icon turns
off, Comp de-energizes, and 30-min. DT starts. During defrost, the defrost icon stays on,
EvapFM runs normally, and CT is displayed. Defrost lasts for 30 min.
Legend: Comp
–compressor;
CT
–cabinet temperature;
DM
–display module;
DT
–defrost
timer;
EvapFM
–evaporator fan motor
Compressor Icon
Defrost Icon
Evaporator Fan Motor Icon
Power
Button
"P" Set
Button
"+" Up
Button
"-" Down
Button
Alarm Icon
°C
°F
°F LED
Cabinet Temperature LEDs
Summary of Contents for HR24B
Page 39: ...39 B Wiring Diagram ...
