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#7040748 - Revision A - September, 2016

Troubleshooting Guides

MODEL UW-24

MODEL UW-24

Wine Storage Error Code Troubleshooting Guide Instructions

Error Codes indicate problems logged by specific components. If error codes are logged, they appear before tem-
perature readings while in Diagnostic Mode and they can be toggled through with the temperature readings.

1.

With the unit ON, initiate Diagnostic Mode by pressing and holding either COLDER key, then press the POWER
key, then release both keys.

2.

Check for Error Codes on the display, making sure to toggle through all possible readings by pressing either
COLDER key. (See Error Code Table Below)

3.

If Error Codes appear, reference the Error Code Troubleshooting Guide on the next page.
a.

The left column of the Error Code Troubleshooting Guide lists the error codes.

b.

The right column of the Error Code Troubleshooting Guide explains what tests and/or corrective actions to
perform.

NOTE:

If error codes are observed, the SERVICE indicator appears constant when Diagnostic Mode ends, indicat-

ing error codes are logged. To clear this and the error codes from the software memory, the problem must be cor-
rected and the unit must be ON; then press and hold the ALARM key for 15 seconds. The control emits a quick
“beep” when the SERVICE indicator and error codes are cleared.

WINE STORAGE ERROR CODE TABLE

CODE INDICATION

05

Upper Cabinet Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s

06

Upper Evaporator Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s

07

Lower Cabinet Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s

08

Lower Evaporator Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s

10

Upper Cabinet Warm Temperature alarm

11

Upper Cabinet Cold Temperature alarm

12

Lower Cabinet Warm Temperature alarm

13

Lower Cabinet Cold Temperature alarm

15

Sealed System Fault (evap temperature cannot drop 5° in 5 minutes, 3 consecutive valve activations)

Wine Storage Thermistor Location Codes

THERMISTOR LOCATION

CODE

Upper Evaporator

UE

Lower Evaporator

LE

Upper Compartment

UP

Lower Compartment

LO

MODEL ICB424

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Содержание UW-24

Страница 1: ...2 Controls Operation 4 Sealed System 23 Air Flow Fan Blade Spacing 28 Component Access Removal 29 Troubleshooting Guide 41 Technical Data 54 Wiring Diagrams 55 subzero com 800 222 7820 UW Undercounter...

Страница 2: ...aderesources product specifications INDICATES THAT HAZARDOUS OR UNSAFE PRAC TICES COULD RESULT IN SEVERE PERSONAL INJURY OR DEATH Indicates that hazardous or unsafe practices could result in minor per...

Страница 3: ...ty Example Office Yacht etc 1 Year TOTAL PRODUCT parts and labor 5 Year SEALED SYSTEM parts only ONE FIVE YEAR Display Model Home Warranty Display units sold three years after date of manu facture 1 Y...

Страница 4: ...l Information MODEL UW 24 MODEL UW 24 MODEL UW 24 FEATURES 6 3 4 5 1 2 FEATURES 1 Product Rating Plate 2 Electronic Control Panel and Display 3 Wine Storage Racks 4 Full View Glass Door 5 Home Securit...

Страница 5: ...LED s are arranged to show values and codes They are also used as back lighting for icons and indicators in the control panel Icons Indicators The words numbers and symbols visible at and on the contr...

Страница 6: ...nd controlling functions taking place at the control board located directly behind the control panel Temperatures and possible problems with the unit are displayed at the control panel display The ent...

Страница 7: ...ge control board are labeled alphanumerically These labels corre spond with the alphanumeric control board summary layout table on the wiring diagram By referencing the table it is possible to identif...

Страница 8: ...unit ON and OFF adjusting temperature set point switching lighting system ON and OFF and enabling and disabling the tempera ture door alarm feature POWER All units are shipped in the OFF Mode When ele...

Страница 9: ...back to normal lighting operation press and release the LIGHTS key again Temperature Alarm and Door Alarm ON OFF There is an audio visual temperature and door alarm in the UW 24 unit that can be enab...

Страница 10: ...med within the first minute after switching the unit ON To convert temperature units of measure from Fahrenheit F to Celsius C readings press and hold the ALARM key and the POWER key simultaneously fo...

Страница 11: ...gure 2 13 Switch Unit OFF First Figure 2 14 Initiate Sabbath Mode Press and Hold POWER Key for 10 Seconds Hold for 10 Seconds Showroom Mode Showroom Mode was incorporated into the electronic control s...

Страница 12: ...NG COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR ELECTRICAL COMPONENTS EVEN WHEN SWITCHED OFF AC LINE VOLTAGE IS STILL PRESENT AT THE CONTROL BOARD Display Average Compartment Temperatures The...

Страница 13: ...rity of the pulse supplied to the valve s solenoid determined by which evaporator is calling for cooling Upper Evaporator Lower Evaporator When an evaporator calls for cooling the bead inside the T co...

Страница 14: ...will remain off until at least one evaporator temperatures exceeds set point by one degree With a set point of 40 F the high offset would be 41 F With a set point of 65 F the high offset would be 66...

Страница 15: ...nt remains warm for too long causing several consecutive maximum run time cycles A warm temperature alarm situation will cause the SERVICE icon to flash See Figure 2 18 and an appropriate error code t...

Страница 16: ...n conjunction with several consecutive maximum run time cycles A cold temperature alarm situation will cause the SERVICE indi cator to flash See Figure 2 21 and an appropriate error code to be logged...

Страница 17: ...ALARM key on the control panel the ALARM icon will also flash and the audible alarm will beep NOTE Correcting repairing the thermistor problem will clear the Thermistor Malfunction Fault Indicator Fi...

Страница 18: ...keys See Figure 2 27 If no error codes have been logged the left display area will show real time temperature of the thermistor the right display area will show the thermistor location code and all in...

Страница 19: ...y read erratic temp s 06 Upper Evaporator Thermistor read open or shorted for 10 seconds or repeatedly read erratic temp s 07 Lower Cabinet Thermistor read open or shorted for 10 seconds or repeatedly...

Страница 20: ...display win dow the right display window will show the thermistor location code and the appropriate cabinet compartment icon will be illuminated See Figure 2 34 NOTES If the COLDER and POWER keys are...

Страница 21: ...plished by initiating Temperature Log Recall Mode With the unit ON initiate Temperature Log Recall Mode by pressing and holding the desired compartment WARMER key then press the POWER key then release...

Страница 22: ...switched OFF During that Index by Pressing POWER Key Figure 2 41 Double Dashes Displayed Instead of Temperature for Several Consecutive Index Periods Bad EEPROM on Control Board Board Must be Replaced...

Страница 23: ...LOG INDEX CHART 45 180 Hours 46 184 Hours 47 188 Hours 48 192 Hours 8 Days 49 196 Hours 50 200 Hours 51 204 Hours 52 208 Hours 53 212 Hours 54 216 Hours 9 Days 55 220 Hours 56 224 Hours 57 228 Hours...

Страница 24: ...n dyes or any other type of additive General Rules for Working with 134a Refrigerant Use equipment dedicated to 134a sealed system service only Use only 134a refrigerant for back flushing and sweep ch...

Страница 25: ...high side of sealed system d Replace compressor e Replace filter drier f Replace heat exchanger if cap tube is clogged g Install a low side drier on suction line h Evacuate or sweep charge sealed syst...

Страница 26: ...t transfer This changes the gas into a high pressure warm liquid before it enters the high side filter drier Filter Drier Figure 3 2 The high pressure warm liquid travels through the high side filter...

Страница 27: ...gas then enters the suc tion tube Suction Tubes Figure 3 6 The cool gas travels through the suction tube which is soldered to the capillary tube As this cool refrigerant gas travels through the sucti...

Страница 28: ...EL UW 24 MODEL UW 24 REFRIGERANT FLOW DIAGRAMS Figure 3 7 Model UW 24 Refrigerant Flow Condenser AWECO Valve Frame Heater Hot Gas Upper Heat Exchanger Upper Compartment Evaporator Compressor Filter Dr...

Страница 29: ...low MODEL UW 24 MODEL UW 24 AIR FLOW EVAPORATOR FAN BLADE SPACING 7 8 1 16 2 22 cm 16 cm CLAMP FORWARD 7 8 1 16 2 22 cm 16 cm CLAMP FORWARD Figure 4 1 Model UW 24 Air Flow and Fan Blade Spacing Upper...

Страница 30: ...BER THAT IT COULD TIP FORWARD RESULTING IN SERIOUS INJURY OR DEATH PULLING A UNIT FROM ITS INSTALLATION SHOULD ONLY BE PERFORMED BY AN AUTHORIZED SERVICE TECHNICIAN OR CERTI FIED INSTALLER TO AVOID EL...

Страница 31: ...inet with screws To remove the switch and switch box bracket assembly first remove the kickplate then See Figure 5 2 1 Extract switch box bracket assembly mounting screws 2 Pull assembly down then rot...

Страница 32: ...over assemblies first remove the kickplate Then at the back of the unit insert a flat blade screw driver between base cover and unit base and pry the base cover off See Figure 5 4 Stainless Steel Unit...

Страница 33: ...ght bracket mounting screws 2 Lower upper light bracket down and disconnect LED light electrical leads 3 Extract screw securing ground wire to the upper light bracket 4 Remove wire grommet from the li...

Страница 34: ...ac ers and evaporator fan cover must be removed first then See Figure 5 10 and 5 11 1 Extract ground screw from ground bracket 2 Pull evaporator cover forward 3 Push compartment thermistor through the...

Страница 35: ...the control board first remove the wine racks from the lower section then See Figure 5 12 1 Extract the screws securing the service panel to the compartment divider 2 Let the back of the service panel...

Страница 36: ...sliding them apart See Figure 5 15 Lower LED Light Removal To remove the lower LED light first remove the control panel assembly and lower light bracket then 1 Slide LED light out the end of the lowe...

Страница 37: ...ers and the slide support spacers 3 Remove the evaporator fan cover 4 Pull the cabinet thermistor from the clamp 5 Pull the evaporator cover forward and feed the cab inet thermistor through the gromme...

Страница 38: ...lled from its installation NOTE If removing a unit from its installation a coun tertop bracket may have been used to make a solid installation This countertop bracket mounting screws need to be extrac...

Страница 39: ...f removing a unit from its installation a coun tertop bracket may have been used to make a solid installation This countertop bracket mounting screws need to be extracted Separating Unit Cabinet With...

Страница 40: ...bing cutter cut the inlet tube to the drier approximately 1 2 inch from the drier 5 With a tubing cutter cut appropriate suction line from suction line T NOTE It is recommended that the T be replaced...

Страница 41: ...ing studs Condenser Removal The condenser is located at the front right of the unit tray and held in place with a bracket and pop rivets passing up from under the unit tray into the condenser bracket...

Страница 42: ...that the initial key stroke does not change the set point on the UW 24 3 Initiate Diagnostic Mode by pressing and holding either COLDER key and the POWER key then write down any Error codes that may...

Страница 43: ...SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERV...

Страница 44: ...SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERV...

Страница 45: ...SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERVICE ALARM SERV...

Страница 46: ...rs constant when Diagnostic Mode ends indicat ing error codes are logged To clear this and the error codes from the software memory the problem must be cor rected and the unit must be ON then press an...

Страница 47: ...eplace i Check resistance of appropriate compartment thermistor for 30 000 to 33 000 ohms at 32 F Replace if defective j Initiate manual valve activation mode for appropriate compartment 1 Check for p...

Страница 48: ...ne storage compartment be sure to complete a Temperature Problem Diagnostic Worksheet on the preceding pages before continuing All key strokes necessary to help in diagnosing a problem are explained i...

Страница 49: ...F then press and hold upper COLDER WARMER keys while pressing POWER key Allow time for unit to pull down to temperature Allow time for unit to pull down to temperature Instruct Customer that unit perf...

Страница 50: ...r that unit performs best between 60 F 90 F a Adjust wine rack b Adjust the door c Check hinges Replace if defective a Move to correct location b Initiate Diagnostic Mode If EE is dis played in place...

Страница 51: ...ey then depress door switch Repeat steps If no effect replace switch 6 11 PROBLEM POSSIBLE CAUSE TEST ACTION 7040748 Revision A September 2016 MODEL UW 24 MODEL UW 24 Troubleshooting Guides D ACTUAL V...

Страница 52: ...trol Panel Assembly SEE INSTALLATION MANUAL 6 12 PROBLEM POSSIBLE CAUSE TEST ACTION 7040748 Revision A September 2016 Troubleshooting Guides MODEL UW 24 MODEL UW 24 I NO LIGHTS J CONTROL PANEL KEYS MA...

Страница 53: ...ystem pressures can be checked and compared against those listed in the tables below Whenever entering the sealed system always use solder on process valves Do NOT use bolt on process valves as they a...

Страница 54: ...ontinuity 2 With POWER key pressed there should be continuity across pins 4 6 only 3 With lower wine storage COLDER key pressed there should be continuity across pins 2 3 only 4 With lower wine storag...

Страница 55: ...serial tag for exact charge NORMAL OPERATING PRESSURES Low Side High Side COMPRESSOR Original Service Compressor Amps Original Service Compressor BTU H DEFROST METHOD THERMISTORS Resistance Ohms at 3...

Страница 56: ...for use by qualified service personnel only Disconnect appliance from electrical supply before beginning service Be sure all grounding devices are connected when service is complete Failure to observ...

Страница 57: ...BAG FOR FUTURE REFERENCE PART NUMBER 9007620 Rev A This wiring information is provided for use by qualified service personnel only Disconnect appliance from electrical supply before beginning service...

Страница 58: ...RAM BAG FOR FUTURE REFERENCE PART NUMBER 9007620 Rev A This wiring information is provided for use by qualified service personnel only Disconnect appliance from electrical supply before beginning serv...

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