New 2008 Freezer Electronics These models will be based on the existing 14/17/21 cabinets but will incorporate new electronic control systems mounted in the door.
Models FUF14SVRWW FUF14DVRWW FUF17SVRWW FUF21SVRWW
Electronic Temperature Control When the freezer is plugged in for f or the first time, all LED’s will turn on and the control will beep three times.
4
The temperature setting of “4” will be displayed. This setting will provide satisfactory food storage temperatures.
Setting Selection Adjust the temperature setting by pressing “Colder “ Colder”” or “Warmer”. Warmer”. Allow several hours for the temperature to stabilize between adjustments.
Set Points for Temperature Control (ºF) U21F (Mo d e l 0) Co m p Of f
4
U17F (Mo d e l 1)
U14F (Mo d e l 2)
Co m p On Co m p Of f . Co m p On Co m p Of f . Co m p On
Setting 1
-1
14
-2
13
-2
13
2
-4
11
-5
10
-5
10
3
-7
8
-8
7
-8
7
4
-10
5
-12
3
-11
4
5
-14
1
-16
-1
-15
0
6
-18
-3
-19
-4
-19
-4
7
-22
-7
-22
-7
-23
-8
Turning the unit OFF and ON
O N
0
O F
“0” is displayed when the freezer is turned off. To turn turn the freezer off, press “Warmer” three times after the “1” temperature setting is displayed. OFF will turn off off the compressor, the fan, the defrost system, and any alarms, but the interior lights will continue to function. To turn the freezer on, press “Colder” three times to get the “1” setting. Continue pressing “Colder” until the desired setting appears.
F
When the freezer is unplugged, the temperature setting will be retained in memory. Control Lock This is done by pressing “Alarm Reset” for three seconds. “L” will then appear on the the display for one second. To unlock the control, press “Alarm Reset” for 3 seconds till the “U “ U” appears in the display.
Showroom Mode Showroom Mode allows a person to demonstrate the freezer features without turning on the compressor and fan or going through defrost. defrost. During Showroom Showroom Mode, Mode, all buttons operate and after the temperature setting a “ . ” will be displayed.
4.
The interior light will operate and there will be no alarms in the Showroom Mode. Note: this may require two people since the buttons MUST be depressed during power up. To enter the Showroom Mode, press “Colder” and “Warmer” at the same time while the freezer is plugged in. An “ S” will appear for three (3) seconds on the display and then the temperature setting will will appear. The Showroom Showroom Mode Mode is retained if the freezer is unplugged. To EXIT the Showroom Mode, press “Colder” and “Warmer” at the same time while the freezer is plugged in.
Defrost Automatic Defrost Timing
d
After each 12 hours of accumulated compressor run time, 30 minutes minutes of defrost defrost will begin. begin. During these 30 minutes the defrost heater will run until the termination switch opens. After the thirty minutes, minutes, the compressor will run. Manual Defrost To manually enter the defrost mode, turn the freezer off, then press “Warmer “Warmer”” an additional four times. A “d” will flash on the display for the thirty minutes of the defrost cycle. To exit the manual defrost before it is complete, press “Warmer “Warmer”” four times. When the defrost mode ends, the freezer will go back to the previous temperature setting and the compressor will run. “d “ d” is only displayed in this mode, standard auto defrost displays the control setting.
Error Modes If the thermistor is open, the display will alternate between “E” and “9”. “9”. If the the thermistor thermistor is shorted, shorted, the display will alternate between “E” and “8”. If a key is stuck for more than 30 seconds, the display will alternate between “E” and “7”.
If there is a thermistor error or a button is stuck for more than 30 seconds, the compressor and fan will run continuously with the standard defrost cycle. There is no capability in the control to store error codes.
Service Mode control. This is done by To enter the Service Mode, lock the control. pressing “Alarm Reset” for three seconds. “L” will then appear on the display for one second. Then press and hold “Colder” and “Warmer” for three seconds. When the diagnostics mode is entered, the compressor is turned off and the digit “8” “ 8” is displayed for three seconds.
Service Mode Continued After three seconds, the sequential information below will be displayed. Blank for 0.5 seconds. Model Blank
ID for 1 second, “0” for for 21 21 cuf cuft, t, “1” for 17 17 cu cuft and “2 “2” for for 14 14 cuf cuft. t.
for 0.5 seconds.
Software
Version and LED test for 3 seconds.
Temp LED illuminates during display of 1st digit of the version number for one second. Hi
Ajar LED illuminates during display of 2nd digit of the version number for one second.
Door
LED’s illuminate during display of 3 rd digit of the version number for one second. Both
Blank
for 0.5 seconds
Service Mode Continued Thermistor
status (“0 (“0” for for ope open, n, “C” for for sho short rt or “-” for good thermistor) for three seconds. Note: a bad, out of spec thermistor will still show “-” good.
10
seconds for power check, using colder and warmer keys for f or diagnostic function of the compressor and defrost heater. During this 10 second time period each key activates a specific load.
Colder button activates the compressor and lowercase “c “c” di disp splay layed ed,, Warmer button activates defrost heater and lowercase “d “d” di disp spla laye yed. d. The test is ONLY active while the button is depressed. 10 seconds after the last key press, the system will exit the diagnostic mode, automatically assuming the default temperature setting. Note: If the temperature is not satisfied by the control settings and the cabinet temperature is below 23 degrees, the compressor has a delay start of 13 minutes.
Alarms Door Ajar Alarm When the door is left open for five (5) minutes or more, the Door Ajar LED will light up and the control will beep every five seconds. The alarm will be turned off when the door door is closed or the “ALARM RESET” button is pressed. The LED light will stay on until the door door is closed. If the door is not shut after five (5) minutes, the alarm will sound again. If after fifteen fifteen minutes the door is not shut, the interior light will turn off. High Temperature Alarm The High Temp LED will turn on and the control will beep every five (5) seconds if the temperature of the cabinet remains above 23ºF for more more than one hour. The alarm will be turned off when the “ALARM RESET” button is pressed, but the High Temp LED will remain lit until the temperature is again below 23ºF.
Control Module Servicing The module can be unsnapped from the door and a nd utilizes a set pin connector on the board that plugs into the door connector. connector. There is 120vac on this door so you should follow proper lotto lotto procedures.
Pry out to unsnap
Control Module Door Wiring The door wiring harness is part of the door, it can not be replaced separately. If damaged – order the door.
The door wiring harness is difficult to reach from the front. Full access is obtained from the rear of the cabinet.
Thermistor
56 ohms
42-17f
Note that the thermistor is in the AC line going to the control.
33 ohms
3.5 ohms
The resistance can be read at pins 1-2 at the door control plug. 92 ohms
Thermistor Location The thermistor is located on the back wall underneath the evaporator cover on the upper right-hand side wiring passageway. WR55X10933
The thermistor is cataloged but not in IPC at this time. Use standard wire splicing procedures when replacing the thermistor, bell connectors sealed with rtv102.
Previous design temperature control pocket location
Electronic control pin out Door Connector
#1
#8
56 ohms
42-17f 33 ohms #1 – Thermistor input to control #2 - AC input to control #3 - AC output to compressor and condenser fan motor
3.5 ohms
#4 - AC output to defrost heater #5 – AC output to interior lamp #6 – open #7 – Input from door switch #8 – Neutral input to control
92 ohms
