Hoshizaki rh1-aac Manual Suplementar
14
c) Defrost
(1) For Refrigerators
This unit uses an off-cycle defrost. A thermistor in the evaporator coil determines the
need for a defrost. When the sensor reaches the initiation setpoint, the unit enters
defrost. When the unit reaches the termination setpoint, the unit ends defrost. The off-
cycle defrost requires no programming; it automatically initiates and terminates.
need for a defrost. When the sensor reaches the initiation setpoint, the unit enters
defrost. When the unit reaches the termination setpoint, the unit ends defrost. The off-
cycle defrost requires no programming; it automatically initiates and terminates.
(2) For Freezers
This unit is preset at the factory to defrost 6 times per day for general conditions. Please
note that the defrost is a heated defrost, and therefore will have a tendency to raise
the cabinet temperature. Cabinet temperature is not displayed during defrost; "dEF"
is displayed in its place. Five minutes after defrost ends, the display changes to "rEC"
(recovery period). Once the cabinet thermistor drops to 15°F above the setpoint, the
display reverts back to cabinet temperature.
note that the defrost is a heated defrost, and therefore will have a tendency to raise
the cabinet temperature. Cabinet temperature is not displayed during defrost; "dEF"
is displayed in its place. Five minutes after defrost ends, the display changes to "rEC"
(recovery period). Once the cabinet thermistor drops to 15°F above the setpoint, the
display reverts back to cabinet temperature.
2. Service Menu
The menu may be used to view settings and the defrost thermistor temperature and to
make adjustments to the defrost frequency.
To access this menu, press and hold the "°F" and down arrow buttons. Once released,
you will have access to the menu. To advance to the next display press "°F". To store
changed settings, you may either advance through all menus by pressing "°F" until
you return to cabinet temperature, or you may press "SET". Either procedure will store
changed settings and return to the cabinet temperature.
make adjustments to the defrost frequency.
To access this menu, press and hold the "°F" and down arrow buttons. Once released,
you will have access to the menu. To advance to the next display press "°F". To store
changed settings, you may either advance through all menus by pressing "°F" until
you return to cabinet temperature, or you may press "SET". Either procedure will store
changed settings and return to the cabinet temperature.
WARNING
This unit has been factory tested with the default settings listed. If a value
is changed from the default, field problems may result. If a value has been
changed from the default and you need to change it back, use the up or down
arrow buttons.
is changed from the default, field problems may result. If a value has been
changed from the default and you need to change it back, use the up or down
arrow buttons.
Display
Indication
Default
Refrigerator
Freezer
dIF
Next display is cabinet differential setting
-5°F
-6°F
-5
Indicates that the cabinet differential is set to -5°F.
HI
Next display is the maximum allowable setpoint (from the setpoint
menu).
menu).
55°F
8°F
55
Indicates that the maximum allowable setpoint is 55°F.
LO
Next display is the minimum allowable setpoint (from the setpoint
menu).
menu).
37°F
-10°F
37
Indicates that the minimum allowable setpoint is 37°F.
CAL
Next display is for calibration of the thermistor.
NA
NA
0
Do not adjust, unless replacing thermistors.