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Sub-Zero BW-30/O Service Manual Download Page 28

Page 28

3-6

#7040743  - Revision A - September, 2016

Sealed System Information

Built-In Wine Storage (BW) Series

Built-In Wine Storage (BW) Series

REFRIGERANT FLOW DIAGRAMS

Figure 3-7.  Model BW-30 Refrigerant Flow

Condenser

AWECO Valve

Frame Heater (Hot Gas)

Upper Heat

Exchanger

Upper
Compartment
Evaporator

Compressor

Filter-Drier

“T” Connection

Lower
Compartment
Evaporator

Lower Heat

Exchanger

Summary of Contents for BW-30/O

Page 1: ...Controls Operation 5 Sealed System 24 Air Flow Fan Blade Spacing 29 Component Access Removal 30 Troubleshooting Guide 48 Technical Data 61 Wiring Diagrams 62 subzero com 800 222 7820 BW Built In Wine...

Page 2: ...l word is observed INTRODUCTION This Technical Service Manual has been compiled to provide the most recent service information for Built In Wine Storage Series appliances The information in this manua...

Page 3: ...SEALED SYSTEM parts and labor Figure 1 2 Serial Tag Layout Layout Reference Only Warranty Details Includes but is not limited to the following Electronic Control System Components Fan Light Switches...

Page 4: ...30 Wide Classic Stainless Steel Door Tubular Handle BW 30 S PH Built In Wine Storage 30 Wide Classic Stainless Steel Door Pro Handle BW 30A S TH Built In Wine Storage 30 Wide with High Altitude Glass...

Page 5: ...SERVICE error fault codes etc Set Point The desired zone temperature established by pressing the COLDER and or WARMER keys High Offset Cut in During normal operation of a wine storage unit it is the...

Page 6: ...monitoring regulating and con trolling functions taking place at the control board located directly behind the control panel Temperatures and pos sible problems with the unit are displayed at the con...

Page 7: ...RATOR UPPER EVAPORATOR ALARM CIRCUIT NORMALLY OPEN REFRIGERANT VALVE CIRCUIT P3 P4 P5 J3 J2 P1 P2 P3 P4 P5 P6 P8 P7 FOR HOME ALARMS WHT BLUE FOR HOME ALARMS DESCRIPTION FUNCTION COLOR WHT RED FOR HOME...

Page 8: ...s supplied to the appliance a short power up is initiated where the temperature units of measure F or C is displayed for one second followed by the model code for five seconds then all components are...

Page 9: ...the time even when the door is closed To do so press and release the LIGHTS key See Figures 2 7 To switch back to normal lighting operation press and release the LIGHTS key again Temperature Alarm an...

Page 10: ...measure from Fahrenheit F to Celsius C readings press and hold the ALARM key and the POWER key simultaneously for five seconds then release the keys this will display the the current unit of measure i...

Page 11: ...nts cannot be adjusted Figure 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...

Page 12: ...DISCONNECTED WHENEVER SERVICING 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...

Page 13: ...e 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 connection o...

Page 14: ...n system will remain off until at least one evaporator temperatures exceed 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...

Page 15: ...either wine storage compartment remains warm for too long causing several consecutive maximum run time cycles A warm temperature alarm situation will cause the SERVICE indicator to flash See Figure 2...

Page 16: ...compartment remains below 40 F too long in 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 an...

Page 17: ...re has been enabled by pressing the ALARM key on the control panel the ALARM indicator will also flash and the audible alarm will beep NOTE Correcting repairing the thermistor problem will clear the T...

Page 18: ...se both 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 an...

Page 19: ...Diagnostic Mode ends indicating error codes are still logged To clear the error codes and non flashing SERVICE indicator the prob lem must be corrected then with the unit ON press and hold the ALARM k...

Page 20: ...isplay win dow the right display window will show the thermistor location code and the appropriate compartment indicator arrow will be illuminated See Figure 2 34 NOTES If the COLDER and POWER keys ar...

Page 21: ...can be viewed on the display is accomplished by initiating Temperature Log Recall Mode With the unit ON initiate Temperature Log Recall Mode by pressing and holding the desired compartment WARMER key...

Page 22: ...ll appear with these temperatures If the unit was switched OFF by pressing the POWER key during any of the 64 indexes and there was still AC power supplied to the unit the average temperatures will co...

Page 23: ...s WINE STORAGE TEMPERATURE 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...

Page 24: ...bitors leak detection 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 f...

Page 25: ...c Back flush 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 charg...

Page 26: ...g referred to as heat 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 t...

Page 27: ...l refrigerant 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 thro...

Page 28: ...W Series Built In Wine Storage BW Series REFRIGERANT FLOW DIAGRAMS Figure 3 7 Model BW 30 Refrigerant Flow Condenser AWECO Valve Frame Heater Hot Gas Upper Heat Exchanger Upper Compartment Evaporator...

Page 29: ...In Wine Storage BW Series Built In Wine Storage BW Series AIR FLOW EVAPORATOR FAN BLADE SPACING 7 8 1 16 2 22 cm 16 cm CLAMP FORWARD UPPER FAN BLADE 7 8 1 16 2 22 cm 16 cm LOWER FAN BLADE CLAMP UP Fi...

Page 30: ...TS INSTALLATION SHOULD ONLY BE PERFORMED BY AN AUTHORIZED SERVICE TECHNICIAN OR CERTI FIED INSTALLER TO AVOID ELECTRIC SHOCK POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESS ING AND OR REMOVING...

Page 31: ...screw at top center must be extracted before pulling the dual installation kickplate forward See Figure 5 2 Drain Pan The drain pan slides in from the front of unit on two side brackets A locating fea...

Page 32: ...hat side of the switch up Repeat this step on each side of the switch 2 Pull switch back and lift off of the top cabinet frame 3 Pull wire covers from wire spade terminals 4 Use a pair of needle nose...

Page 33: ...back of grille side frames with the rear mounting screws then push the grille assembly back Overlay Refrigerator Door Handle Side Trim The handle side trim on overlay units is attached to the door wit...

Page 34: ...w is not inserted far enough it damages the hinge plate when closing the door if it is inserted too far it won t hold the door hinge in the correct position when closing the door 3 Extract the inner d...

Page 35: ...the door open the door forty five to ninety degrees and lift it off of the bottom cabinet hinge assembly See Figure 5 12 Bottom Cabinet Hinge Assembly The bottom cabinet hinge assembly is attached to...

Page 36: ...15 1 Pull wine rack on drawer slides out fully 2 Lift front of wine rack up 3 Lift back of wine rack up 4 Pull wine rack forward Cabinet Slides Cabinet slides are attached to side walls with screws T...

Page 37: ...ugh which pass screws These screws also pass through slots in the back flanges of the fan cover and through holes in the upper duct cover into screw grommets at the back wall To remove an evaporator f...

Page 38: ...the upper fan cover and duct then See Figure 5 21 1 Pull thermistor from evaporator 2 Cut thermistor s wire leads six to twelve inches from the back wall then pull thermistor from compart ment Upper...

Page 39: ...om vertical then lift the duct up off of locator screws Lower Evaporator Fan Assembly The lower evaporator fan assembly is attached to the rear wall of the compartment with screws To remove the lower...

Page 40: ...control board is located at the bottom of the compartment divider behind the control panel and is concealed by an access panel The control board is held in place by four tabs one at each corner of th...

Page 41: ...1 Extract the screws from the access panel and remove the access panel 2 Disconnect the membrane switch ribbon cable the LED ribbon cable and the lower light strip wires from the control board 3 Extr...

Page 42: ...essor shroud first remove the control area grille then See Figure 5 32 1 Remove the top cabinet trim 2 Extract the compressor shroud screws 3 Compress the grommet for the light wire harness and remove...

Page 43: ...ressor area then See Figure 5 34 1 Extract screws securing motor to brackets NOTE The brackets unhook from the grommets in the shroud after the screws are removed 2 To remove fan blade from fan motor...

Page 44: ...NTI TIP BRACKETS ARE IN PLACE AND THE UNIT IS PROPERLY ANCHORED BEFORE ATTEMPTING TO SLIDE THE UNIT TRAY OUT Figure 5 37 Aweco Valve Assembly Removal Cut here Cut here The following notes apply to par...

Page 45: ...pressor off of unit tray Condenser Holes in the front and rear bottom flanges of the con denser fit over threaded studs in the unit tray then a nut is applied to each threaded stud to hold the con den...

Page 46: ...e refrigerant from the sealed system then See Figure 5 40 1 Extract evaporator mounting screws then pull and rotate evaporator so heat exchanger is accessible 2 With a file score a line around capilla...

Page 47: ...duct in order to replace the lower heat exchanger To remove a heat exchanger first capture the refriger ant from the sealed system then See Figure 5 41 1 With a file score a line around the capillary...

Page 48: ...et points keep in mind that the initial key stroke does not change the set point on BW 30 3 Initiate Diagnostic Mode by pressing and holding either COLDER key and the POWER key then write down any Err...

Page 49: ...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 SERVICE ALAR...

Page 50: ...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 SERVICE ALAR...

Page 51: ...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 SERVICE ALAR...

Page 52: ...VICE 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...

Page 53: ...nections Repair or replace 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 compa...

Page 54: ...res too cold in a wine 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 pro...

Page 55: ...t run switch unit OFF 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 Cus...

Page 56: ...ure Instruct Customer 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...

Page 57: ...switch Repeat steps If no effect replace switch 6 11 PROBLEM POSSIBLE CAUSE TEST ACTION 7040743 Revision A September 2016 Built In Wine Storage BW Series Built In Wine Storage BW Series Troubleshootin...

Page 58: ...SEE INSTALLATION MANUAL 6 12 PROBLEM POSSIBLE CAUSE TEST ACTION 7040743 Revision A September 2016 Troubleshooting Guides Built In Wine Storage BW Series Built In Wine Storage BW Series I NO LIGHTS J C...

Page 59: ...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 are prone to leak Whe...

Page 60: ...ER 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 storage WARMER key pressed...

Page 61: ...ant NOTE Always check 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...

Page 62: ...rvice personnel only Disconnect appliance from electrical supply before beginning service Be sure all grounding devices are connected when service is complete Failure to observe the above warnings may...

Page 63: ...N WIRING DIAGRAM BAG FOR FUTURE REFERENCE PART NUMBER 9007871 Rev A This wiring information is provided for use by qualified service personnel only Disconnect appliance from electrical supply before b...

Page 64: ...E IN WIRING DIAGRAM BAG FOR FUTURE REFERENCE PART NUMBER 9007871 Rev A This wiring information is provided for use by qualified service personnel only Disconnect appliance from electrical supply befor...

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