Related Manuals for Sub-Zero 424HAG/O-2
Summary of Contents for Sub-Zero 424HAG/O-2
- Page 1 subzero.com 800.222.7820 Service Manual General Information Installation Information Controls & Operation...
- Page 2 (24/7 Phone Coverage) important for the topic being covered. This manual is designed to be used by Authorized Service Personnel only. Sub-Zero Freezer Co., Inc. assumes no responsibility for any repairs made on Sub-Zero refrigeration units by anyone other than Authorized Service Technicians.
- Page 3 Zero is arranged and stored under the unit serial num- ber, and the customer's last name. • 1 Year TOTAL PRODUCT, *parts and labor. Sub-Zero requests that you have the model and serial NOTE: Stainless Steel (Classic, carBon & Platinum) number available whenever contacting the factory or doors, panels &...
- Page 4 • 400 Series - 24” Wide - High Altitude Glass/CarBon (or Black) Steel Wrapped Door 424G/O-2 • 400 Series - 24” Wide - Glass/Overlay Panel Application Door 424HAG/O-2 • 400 Series - 24” Wide - High Altitude Glass/Overlay Panel Application Door 424G/P-2 •...
- Page 5 Wine Storage Series General Information Wine Storage Series (400- (400- NOTE: Door panels for this model sold Figure 1-5. Model 427R-2 separately. 427RG-2 • 400 Series - 27” Wide - Refrigerated Drawers - Glass Door on Wine Storage Section 427RHAG-2 • 400 Series - 27” Wide - Refrigerated Drawers - High Altitude Glass Door on Wine Section 427RS-2 •...
- Page 6 Sub-Zero Wine Storage Temperature Range, Recommended Wine Storage Temperatures and Recommended Wine Serving Temperatures: he table below shows the temperature range of the Sub-Zero Wine Storage Units. This table also shows the rec- ommended temperatures for “serving” wines. Serving wines at the recommended temperatures will insure that white wines maintain their lively and interesting taste, and red wines will maintain their scent and flavor.
- Page 7 Unit leveling, unit movement, door misalignment, improper door and drawer sealing, internal frost or condensation, exterior condensation, warm compartment temperatures, etc. NOTE: If additional installation information is needed, refer to the complete Installation Guide, or contact Sub-Zero Service Department.
- Page 8 (See leveling instructions on following pages). 5. Refer to Installation Guide provided with the unit for any additional information needed. Sub-Zero Unit Figure 2-3. Anti-Tip Components Unit Leveling (424-2, 424FS-2) NOTE: Model 424-2 must be leveled before installing into rough-in opening.
- Page 9 Installation Information Wine Storage Series Wine Storage Series (400- (400- Unit Leveling (427-2 & 427R-2) NOTE: Unit must be installed before final leveling. If unit is anchored to cabinets, remove anchor screws before leveling, reinstalled after (See Figure 2-6). Side Molding 1.
- Page 10 Installation Information Wine Storage Series Wine Storage Series (400- (400- Unit Leveling (430-2) NOTE: Unit must be installed before final leveling. If unit is anchored to cabinets, remove anchor screws before leveling, reinstalled after (See Figure 2-10). 1. Remove kickplate (See Figure 2-11). 2.
- Page 11 Installation Information Wine Storage Series Wine Storage Series (400- (400- Door Adjustment (424-2, 424FS-2) NOTE: Unit must be level before adjusting door. 1. Remove NOTE: If 424FS-2 door needs adjusting, stainless steel 2. Slide back brackets. wrap must be removed to adjust top cabinet hinge (See wrap Figure 2-14).
- Page 12 Installation Information Wine Storage Series Wine Storage Series (400- (400- Door Stop Adjustment (427-2 & 427R-2) Models 427-2 and 427R-2 have a 90° door stop cam built into the hinge system. The 90° door stop cam is located in the center portion of the hinge. To adjust the stop, use a standard straight-blade screw- driver to rotate cam until stop point is reached.
- Page 13 Installation Information Wine Storage Series Wine Storage Series (400- (400- Door Panel Removal and Installation (All Models) Hinge Pin METAL DOOR PANELS MAY HAVE SHARP EDGES. Door Closer PROTECTIVE GLOVES SHOULD BE WORN WHEN HANDLING PANELS. DOOR PANELS MAY BE HEAVY OR UNSTABLE. IF THEY WERE TO FALL, THEY COULD CAUSE SERI- OUS PERSONAL INJURY.
- Page 14 Installation Information Wine Storage Series Wine Storage Series (400- (400- Overlay Door Panel Removal and Installation (424-2) Door Frame Door Gasket Overlay panels are attached to the door using screws passing through the door frame from the rear, into the panel.
- Page 15 Installation Information Wine Storage Series Wine Storage Series (400- (400- Door Panel Removal and Installation Door Frame Door Gasket (427-2 & 427R-2) Models 427-2 and 427R-2 are NOT supplied with pan- els from the factory. Panels are purchased separately. Poly Tape Door panels are attached with screws passing from the rear through the door frame into the panel.
- Page 16 Installation Information Wine Storage Series Wine Storage Series (400- (400- Classic, carBon and Platinum Stainless Steel Door Panel Removal and Installation (430-2) Pry down To remove a 430-2 SS door panel, the door must first be removed from the unit. Remove To Remove the Door: E-Ring...
- Page 17 Installation Information Wine Storage Series Wine Storage Series (400- (400- Framed & Overlay Door Panel Removal / Installation (430-2) Framed and overlay panels are attached to the door by sliding 1/4” (6 mm) thick edge of panel under door trim. On the handle side, there may also be additional screws passing through the door frame from rear into Magnetic...
- Page 18 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- WINE STORAGE ELECTRONIC CONTROL TERMINOLOGY & COMPONENT DESCRIPTIONS The electronic control system monitors, regulates and controls a variety of functions; it also displays temperatures, possible problems with the appliance and the temperature alarm bell status. The table below defines some basic electronic control terminology.
- Page 19 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- BASIC WINE STORAGE ELECTRONIC CONTROL SYSTEM This page contains a basic illustration of the 400-2 Series electronic control system (See Figure 3-1). Input opera- tions are performed at the membrane switch (part of the control panel assembly), with monitoring, regulating and controlling functions taking place at the control board (located directly behind the control panel).
- Page 20 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- WINE STORAGE CONTROL BOARD LAYOUT AND SUMMARY TABLE The electrical connection points on the wine storage control board are labeled Alphanumerically. These labels correspond with the alphanumeric control board summary layout table on the wiring dia- gram.
- Page 21 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- WINE STORAGE CONTROL PANEL LAYOUT Upper Compartment COLDER WARMER BELL ON Alarm Bell & UNIT Upper SERVICE ON/OFF Compartment ON/OFF key indicators Temp Reading Lower LIGHTS Compartment ON/OFF Temp Reading COLDER WARMER Lower Compartment...
- Page 22 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Adjusting Set-Points (Temperature Adjustments) To adjust set-points, press WARMER or COLDER key on control panel in multiple key strokes until desired set-point is achieved (See Figure 3-6). One key stroke equals one degree (1°) change. NOTE: To check set point, press either the WARMER or COLDER key, keeping in mind that the initial key stroke will change the previous set-point by a one degree increment or decrement depending on key stroke choice.
- Page 23 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- UNIQUE WINE STORAGE INPUT OPERATIONS The following pages illustrate unique input operations performed at the control panel, namely: Temperature Units Selection Mode, Sabbath Mode and Showroom Mode. Temperature Units Selection Mode (Selecting Degrees Fahrenheit or Degrees Celsius Display) The electronic control is initially set to display temperature in Fahrenheit (°F) units of measure.
- Page 24 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Sabbath Mode (Lights Off Mode) Sabbath Mode was incorporated into the electronic control system for the observance of certain religious days. Initiating Sabbath Mode disables the LEDs and lighting system. To initiate Sabbath Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-11), then press and hold the UNIT ON/OFF key for ten (10) seconds, until the LEDs and lights switch OFF (See Figure 3-12).
- Page 25 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- FUNCTION OF THE WINE STORAGE ELECTRONIC CONTROL SYSTEM The following pages explain monitoring, regulating and controlling functions of the electronic control system. In most cases signal traces for the 424-2 wiring schematic are used to show current flow for functions being explained. TO AVOID ELECTRIC SHOCK, POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESSING AND/OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR OTHER ELEC- TRICAL COMPONENTS.
- Page 26 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Display Average Compartment Temperatures The temperature signal from the thermistor in each compartment is monitored by the microprocessor, then displayed in the control panel display. The LED arrow closest to the appropriate display window indicates which compartment (upper or lower) the temperature is associated with.
- Page 27 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Control Compressor, Condenser Fan, Dual Refrigerant Valve and Evaporator Fan Motors The control senses evaporator and compartment temperatures via thermistors; one on each evaporator, and one in each compartment. High Offset (Cut-in) is governed by the evaporator temperatures. Low Offset (Cut-out) is gov- erned by the compartment temperatures.
- Page 28 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Monitor and Control Off-cycle Defrost Since High Offset (Cut-in) is governed by the evaporator temperature, the refrigeration system cannot be energized until evaporator temperatures exceed 39°F / 4°C, with a 38°F/3°C set-point, and/or exceed 66°F / 19°C, with a 65°F/18°C set-point.
- Page 29 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- POSSIBLE WINE STORAGE ERROR INDICATORS All wine storage units are equipped with an audio-visual temperature alarm feature, as well as low voltage wiring provisions to allow the alarm to be tied into a home security alarm system. This section explains the temperature alarm feature and the audio and/or visual error indicators that may alert a customer of a malfunction.
- Page 30 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Cold Temperature Alarm A cold temperature alarm can occur if either wine storage compartment remains below 38°F / 3°C for too long, caus- ing several consecutive maximum run-time cycles. During a cold temperature alarm, cold temperature readings may be displayed at the control panel, the SERVICE indicator will flash (See Figure 3-22).
- Page 31 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Thermistor Malfunction Error Indicators The diagrams below illustrating what a customer may see on the display if there is a thermistor fault, such as a short or open condition. (See Figures 3-25, 3-26, 3-27) A thermistor fault will cause power to the compressor and fans to be cut, and error codes to be logged (covered later in this section).
- Page 32 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- WINE STORAGE TROUBLESHOOTING INPUT OPERATIONS The following few pages explain troubleshooting input operations performed at the control panel, namely: Diagnostic Mode, Manual Valve Activation Mode and Temperature Log Recall. Diagnostic Mode Initiating Diagnostic Mode allows the Service Technician to observe real-time temperature readings from all thermis- tors without temperature averaging.
- Page 33 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Diagnostic Mode Indicators If “EE” is observed in the left display area during Diagnostic Mode - The thermistor, or its wiring in the location indicated by the code at right is open or shorted (See Figure 3-32). Figure 3-32.
- Page 34 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Manual Valve Activation Mode Manual Valve Activation Mode forces the refrigerant valve to open (feeding refrigerant to the desired evaporator), and energizes the appropriate evaporator fan motor, as well as the compressor and condenser fan motor. Once ini- tiated, this mode lasts for five (5) minutes, during which time the evaporator temperature for that compartment is dis- played at the control panel.
- Page 35 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Temperature Log Recall Mode The electronic control system is equipped with a temperature history data storage system. This system logs/stores the average temperature of each individual thermistor every four hours, along with any event indicators (explained later in this section), that may have occurred.
- Page 36 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Temperature Log Event Indicators The diagrams below illustrate possible event indicators that may be observed while in Temperature Log Recall Mode. (See Figures 3-39 through 3-41) Figure 3-39. BELL ON Illuminates - Indicates Power Failure / Interruption During that Index Period Figure 3-40.
- Page 37 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- WINE STORAGE TEMPERATURE LOG INDEX CHART Index # Previous Hours Time Frame Index # Previous Hours Time Frame Index # Previous Hours Time Frame 4 Hours 92 Hours 180 Hours 8 Hours 96 Hours (4 Days)
- Page 38 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- MODEL 427R-2 REFRIGERATOR SECTION ELECTRONIC CONTROL TERMINOLOGY & COMPONENT DESCRIPTIONS The table below defines some of the basic electronic control system terminology. Term/Component Definition / Description Main Control Board ..……..…… The printed-circuit board (PC Board) which contains a microprocessor, relays, triacs and electrical connections that monitor and control all functions of the appliance.
- Page 39 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- MODEL 427R-2 REFRIGERATOR SECTION ELECTRONIC CONTROL SYSTEM OVERVIEW This page contains the wiring schematic for the refrigerator section of the model 427R-2. Input operations for the electronic control system are performed at the control panel (located inside the upper drawer), with monitoring, regu- lating and controlling functions taking place at the main control board.
- Page 40 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- MODEL 427-2 REFRIGERATOR SECTION CONTROL BOARD LAYOUT AND SUMMARY TABLE Electrical connection points on the control board are labeled alphanumerically. These labels correspond with the alphanumeric summary table, located on the wiring diagram. By referencing the summary table, it is possible to identify which components are connected at which points on the main control board.
- Page 41 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- MODEL 427R-2 REFRIGERATOR SECTION CONTROL PANEL LAYOUT NOTE: The LCD is not back lit. It will appear darker than the LED’s in the wine section. REFRIGERATOR SET-POINT DRAWER AJAR (Liquid Crystal Display) ADJUSTMENT KEYS ALARM ON/OFF KEY...
- Page 42 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- MODEL 427R-2 REFRIGERATOR SECTION BASIC INPUT OPERATIONS The following few pages describe the basic input operations performed at the 427R-3 control panel (switching unit ON/OFF; adjusting set-point (temperature adjustment); switching ice maker system ON/OFF and enabling and dis- abling door ajar alarm feature).
- Page 43 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Drawer Ajar Alarm ON/OFF When the drawer ajar alarm feature is activated, the alarm will alert a customer if a drawer is stuck open, or acciden- tally left open. To enable the alarm feature, press the bell ON/OFF key on the control panel. A bell icon will appear on the LCD indicating that the alarm feature is active.
- Page 44 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Sabbath Mode Sabbath Mode was incorporated into the electronic control system for the observance of certain religious days. Initiating Sabbath Mode disables the LCD, lighting system and the door ajar alarm feature. To initiate Sabbath Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-50), then press and hold the UNIT ON/OFF key for ten (10) seconds, until the LCD and lights switch OFF (See Figure 3-51).
- Page 45 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- FUNCTIONS OF MODEL 427R-2 REF. SECTION ELECTRONIC CONTROL SYSTEM The following few pages explain monitoring, regulating and controlling functions of the electronic control system. Display Zone Temperatures Temperature signals from the compartment thermistor are monitored by the microprocessor, then displayed on the LCD.
- Page 46 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Regulate Zone Temperature and Fan-Assisted Off-Cycle Defrost When the thermistor in the refrigerator compartment reaches high off-set temperature, calling for cooling, the evapo- rator fan is energized, but the compressor is not allowed to run until the thermistor on the evaporator reaches 38°F (3°C).
- Page 47 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Monitor Compressor Run Duration, Displays If Service is Needed The microprocessor observes the state of the compressor relay to determine the length of compressor run time (See Figure 3-57). If the compressor runs 100% (4 hours), an error code is logged (EC 50), and defrost will be initiated, but SERVICE will not flash.
- Page 48 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- POSSIBLE 427R-2 REFRIGERATOR SECTION ERROR INDICATORS The diagrams on this page illustrate what a customers may see on the LCD if a problem/error exists with the unit. NOTE: To clear indicators and error codes, problem must be corrected then press bell ON/OFF key for fifteen (15) seconds.
- Page 49 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- MODEL 427R-2 REFRIGERATOR SECTION TROUBLESHOOTING INPUT OPERATIONS The following few pages explain troubleshooting input operations performed at the control panel. The input opera- tions described are Diagnostic Mode, Manual Component Activation Mode and Temperature Log Recall. Diagnostic Mode Initiating Diagnostic Mode allows the Service Technician to observe real-time temperature readings from all thermis- tors without temperature averaging.
- Page 50 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Diagnostic Mode Indicators If “EE” is observed in left display area during Diagnostic Mode, the thermistor in that location is open or shorted, or there is a break in that thermistor’s wiring (See Figure 3-66). SERVICE UNIT REFRIGERATOR...
- Page 51 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- If Error Codes are observed in Diagnostic Mode, a non-flashing SERVICE indicator will appear on the LCD when Diagnostic Mode ends, indicating error codes are still stored (See Figure 3-69). To clear a non-flashing SERVICE icon and the error codes, the problem must be corrected and the unit must be ON, then the door ajar alarm bell ON/OFF key must be pressed and held for fifteen (15) seconds.
- Page 52 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Temperature Log Recall Mode The electronic control system is equipped with a temperature history data storage system. This system logs/stores the average temperature of each individual thermistor every two hours, along with any event indicators (explained later in this section), that may have occurred.
- Page 53 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- To View Compartment and Evaporator Temperature History - Begin with the unit ON and in Diagnostic Mode (See Figure 3-76). While in Diagnostic Mode, toggle through the readings until the desired thermistor temperature is displayed on the LCD (See Figure 3-77).
- Page 54 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Temperature Log Event Indicators The diagrams below illustrate possible event indicators that may be observed while in Temperature Log Recall Mode. (Also see Temperature Log Index Chart on next page) UNIT REFRIGERATOR COLDER...
- Page 55 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Temperature Log Index Chart NOTE : The chart below applies to the hours in which the control has power. Temperature history data will only be stored when the control has 115V AC supplied to it. If power to the unit is interrupted, the average temperatures for that time period are stored with the event indicator.
- Page 56 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- MODEL 427R-2 REFRIGERATOR SECTION SERVICE INPUT OPERATIONS Model Configuration Mode The main control board is used in several different models, so when a 427R-2 Unit is manufactured, the main control board must be configured/programmed by a series of key strokes at the control panel.
- Page 57 Electronic Control System Wine Storage Series Wine Storage Series (400- (400- Manual Entry Model Configuration Mode Manual Entry Model Configuration Mode allows a Service Technician to verify a main control board of the 427R refrigerator section was configured correctly, and/or to reconfigure the main control board if a mistake was made during the configuration process.