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Warming Drawer WWD30-2

Electronic Control Info.

3-12

#814750 - Revision A - January, 2011

Enter Diagnostics

(Sr if in showroom mode)

0018

(Meaning revision 1.8)

TIMER

Err

TIMER

Err

TIMER

Err

TIMER

Err

TIMER

Err

TIMER

Err

TIMER

Con

(Control On Time) 1:60 = 16000 hr.

(See note below)

TIMER

ELE

(Element On Time) 95:00 = 950000 hr.

(See note below)

TIMER

FAn

(Fan On Time) 12:60 = 126000 hrs. use

(See note below)

TIMER

Dor

(Drawer Open/Close) 1:60 = 16000 cycles

(See note below)

TIMER

119

(Current Temp)

deg

key press

TEMP DISPLAY

TIMER DISPLAY

Figure 3-19. Field Service Mode.

Field Service Mode Unique Keystrokes:

NOTE

A colon (:) signifies the need to add two zeros (0) to the time shown. (i.e. 1:60 = 16000)

ERROR CODE TROUBLESHOOTING GUIDE:

ERROR CODE

CAUSE

TEST / ACTION

(Invalid Checksum Error)

(Thermistor Open)

(Thermistor Short)

(Element Sensing)

(Door Switch)

(Stuck Relay)

(Cable Open)

Incorrect checksum

Temperature >300ºF

Temperature <-30ºF

<5º change in temperature over 10
minutes of continuous call for heat.

Occurs only during preheat mode and

the door is closed.

Door switch closed when the keypad is

being operated or unit turned on.

Drawer temperature rises to 250ºF in

any mode/state.

Cable wires that activate element or

fan relays on power board are not

making connection.

Replace Control Board

In FSM (Field Service Mode), view temper-

ature as view by thermistor. Verify wiring

ok to element. Replace Thermistor if ok.

In FSM (Field Service Mode), view temper-

ature as view by thermistor. Verify wiring

ok to element. Replace Thermistor if ok.

If unit outdoors and temperature below

freezing point, instruct on unit limitations.

Verify Thermal Cutout is not open.

Verify Element is not open.

Replace TCO or Element if open.

Check operation of Door Switch with Ohm

meter. Replace if defective.

See Answer Advisor: WWD30 Error

Code 60

Check connection of comm cable. Use

Figure 5-1 to check voltage and/or ohm

reading of cable. If open, replace.

NOTE

After correcting problem, errors code must be cleared. To clear error codes logged, press and hold

“TIMER” up and down arrow keys for 5 seconds, while in Field Service Mode.

Содержание WWD30-2

Страница 1: ...ontrol will open the element relay Once the control sees a thermistor temperature of 5ºF below set point the relay will close allowing element to cycle on Power Relay Board Circulation Fan Element Display Board Keypad Flex Cable Inner ceiling Network Cable Electronic Control Board Behind Front Panel Door Switch Bottom of Drawer Front Display Beeper CONTROL all low temp components Keypad Communicat...

Страница 2: ... will be remain off The PROOF is on anytime PROOF mode is being used The ON indicator is on anytime control is calling for heat The exception is during Sabbath mode where the ON indicator stays on constantly NOTE TIMER is on anytime there is a timed warming event or if kitchen timer is being used NOTE TIMER is not an option in Sabbath mode POWER Key The POWER key is used to turn unit on and off Wh...

Страница 3: ...nit will switch off NORMAL WARMING MODE Normal warming mode is the basic operating mode when power is turned on and any warming function is selected This will include heating by the element and circulation of air by use of the fan Mode Entry The unit can be placed into a normal warming mode by simply pressing the Power On Off key followed by either TEMP up or down arrow keys or any preset is press...

Страница 4: ...lash when first entering mode Once mode is active the TIMER will no longer be illuminated If no time is set timer will automatically default to 4 00 hours This ensures a definitive stop time Operations When HIGH Preset key is depressed control will display 200F in temperature display For MED temperature display will read 160F and for LOW temperature display will read 120F In timer area of display ...

Страница 5: ...nt and fan maintains drawer temperature to set point temperature Fan is on while element is on during warming mode as long as drawer switch returns a drawer closed value If element has cycled off fan will continue to circulate air inside drawer for a pre determined time before turning off Fan will then re energize when element is turned back on during a call for heat PREHEAT Preheat can be describ...

Страница 6: ...first 5 second increment is obtained then will increase by 5 seconds per 1 2 second If TIMER up or down arrow key is depressed for longer than 30 seconds display will increase by 30 minute increments each 1 2 second until 5 00 Hours is reached then increase in one hour increments up to 24 00 hours NOTE Timer will count up in time with 1 minute as the minimum setting and going up to 24 00 hours min...

Страница 7: ... drawer is open for longer than 1 minute and the unit calls for heat element will randomly turn on and off If in Sabbath mode but a second key press does not occur withing 10 seconds the unit will enter OFF mode Mode Exit A press of the Power On Off key will terminate Sabbath mode and shut off unit at any time TIMER PROOF LOW PRESETS HIGH MED TEMP POWER ON OFF PROOF F TEMP TEMP TEMP ON TIMER Figur...

Страница 8: ...es must be made when unit is in OFF mode See Figure 3 20 for a quick reference to keystrokes to enter modes and features Temperature Display Preference Control can be switched between Fahrenheit or Celsius by pressing and holding both TEMP up and down arrow key for 5 seconds Use the TEMP Up or Down arrow key to change from F to C or C to F See Figure 3 12 NOTE Press Power On Off key to exit and sa...

Страница 9: ...sed on drawer state at full illumination NOTE Left side of display will show On continuously and the right side of display will flash between bclt and Sab Continuous mode Off refers to backlight continuously off only in Sabbath mode Outside of Sabbath mode back light works as normal based on drawer state at full illumination NOTE Left side of display will show Off continuously and the right side o...

Страница 10: ...l control information parameters such as total hours used See Figure 3 17 3 19 NOTES Using the opposite TIMER up or down arrow key will reverse your previous order To clear error codes logged press and hold TIMER up and down arrow keys for 5 seconds while in Field Service Mode See Troubleshooting Section 5 for list of error codes and meanings NOTE Once you have made it through all errors and infor...

Страница 11: ...perature over 10 minutes of continuous call for heat Occurs only during preheat mode and the door is closed Door switch closed when the keypad is being operated or unit turned on Drawer temperature rises to 250ºF in any mode state Cable wires that activate element or fan relays on power board are not making connection Replace Control Board In FSM Field Service Mode view temper ature as view by the...

Страница 12: ... Display Contrast Change Mode LED Back Lighting Change Mode TEMP ELE Func ON Relay closed Element on TEMP ELE Func OFF Relay Opens Element Off TEMP Fan Func ON Relay closed Fan turns on TEMP Fan Func OFF Relay Opens Fan turns Off TEMP Dor CLOS if Drawer Closed OPEn If Drawer Open key press TEMP DISPLAY TIMER DISPLAY ON INDICATOR POWER ON OFF PROOF MED POWER ON OFF 5 Seconds 5 Seconds POWER ON OFF ...

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