Sub zero defrost cycle. Manual Freezer Evaporator Defrost: 14 .

Sub zero defrost cycle Every time this cycle kicks in, it frees the evaporator coils from ice buildup. Also for: Bi-36rg, Bi-36f, Bi-30u, Bi-30ug, Bi-36u, Bi-36ug, Bi-36s, Bi-42s, Bi-42sid, Bi-42sd, Bi-48s, Bi-48sid, Bi-48sd. If the defrost timer is malfunctioning, the defrost cycle may not start or power to the defrost heater may be cut off during the defrost cycle. On the fridge side, it's not cooling very well. Monitor Compressor Run, Displays if Service or Condenser Cleaning Is Needed Thankfully, most causes of water leaks in Sub Zero freezers are straightforward to diagnose and fix. 48 30 - 38 80 Photo Credit: Sub-Zero Sub-Zero Drip Tray Overflowing or Leaking. All India. Yesterday eve after cleaning up, on the advice of the Sub-Zero help line from the episode last year, I shut off the unit briefly to cause a defrost cycle. Sub-Zero 3081050 Refrigerator Defrost Timer 21M Defrost Time; 6H Cycle Time; 120V . 29 SALE! $30. This happened a year ago. 6 Hour 21 Minute cycles. Understanding how these defrost cycles work is essential for homeowners using heat pumps in sub-zero temperatures. 479 29 - 37 7. If the system fails to enter the defrost cycle, frost accumulation will obstruct the evaporator coils, causing the unit to work harder to maintain the desired temperature. The tray collects water from the defrost cycle so it should have some amount of water about once a day and then dry out. Order the Sub-Zero Terminator Defrost 55 SVCE (Part 7006594), which replaces 3082060, for your refrigeration system. Customer: I have an Sub-Zero Model 650 that abruptly spilled water on the floor. 14. Full Screen Toggle Next Page: 2 Search Manual Parts Sections. Replaces 3-08-1180. 13. Fits 201FD, 201RIM, 211RFD, 215FD, 22IM, 241RFD, 244RFD, 245RFD, 249FF, 2011ICE, 2511RFD, 251RFD, 2711, 2811,361RFD 801RFD and other Sub Sub-zero 550 Pdf User Manuals. Freezer burn is a result of how the food was originally packaged and not a symptom of the Sub-Zero's performance. The freezer forms frost By chatting and providing personal info In the defrost cycle, the defrost heater melts away any frost that may have accumulated on the evaporator coils. ATTN: Service Department P. O. If your heat pump is low on refrigerant, it can freeze up. Created Date:. View online or download Sub-zero 532 Technical Service/Training Manual, Service Manual, Information Manual, Installation Instructions Manual Automatic Defrost. For these types the main control board has a preprogrammed (or adaptive) internal clock that tells the unit when to defrost. Also for: 542, 561, 511, 550, 501f, 501r, 590, 700 series. Product Price: Rs 1,500 / Piece Get Best Price. One common cause is a broken defrost heater. This could damage them. 5. Such noises are usually considered normal operation. These noises may be normal operating sounds related to refrigerant circulation, fan operation, ice maker operation, defrost cycle or compressor operation. A white frosty coating appears on the back of the unit and as it builds up, it restricts the airflow through the heat pump. If it fails or malfunctions, it can lead to excessive frost buildup on the evaporator coils, hindering the freezer’s ability to cool effectively. After a few minutes, you can open the freezer and see if you can detect The Defrost Timer advances the freezer system into and out of the defrost cycle. Sub-Zero freezers use electric heaters to gently The freezer compressor should cycle off- this means you have manually entered a defrost cycle. Then, place the multimeter probes on the terminals. Defrost System: Malfunctioning defrost components can lead to ice buildup in the freezer, affecting View and Download Sub-Zero PRO 48 use & care manual online. Cut-Out Temp. I disassembled it each time and made sure the tube is clear. 060 1700 - 2080 4. If the defrost thermostat is defective, the thermostat contacts will So looking at the wiring diagram the defrost cycle is entirely controlled by the main control board. Can I suggest running your air con 24/7 when the forecast is for sub zero temps? Run at a lower temp (16?) when not in the room and then turn the temp up while you are in the room. I'm trying to test #2 and #3. Find detailed instructions for Built-In 601R, 601RG, 601F and other models. Once you turn off the freezer and turn the thermostat to zero, open the door and lay towels or a pan under the freezer to collect water. Sometimes, the issue may not lie within your refrigerator but beneath it. As far as I can tell, the defrost heater works (it gets warm when I manually initiate a defrost cycle) and the unit makes ice just fine, so I'm assuming the full tube heater is ok. Our comprehensive guide will help you maintain the optimal performance of your Sub-Zero refrigerator. It will make small clicks as it advances, then will make a louder click. Built-in (600-2) Series. g. Sign In Upload. If the board fails, the refrigerator will not go into the defrost cycle. Fits 201FD, 201RIM, 211RFD, 215FD, 22IM, 241RFD, 244RFD, 245RFD, 249FF, 2011ICE, 2511RFD Defrost cycle melts ice from evaporator coils in refrigerated trucks. 14 Even the Daikin and Fuji will star defrost cycles at below zero, especially if you are trying to heat a whole room from freezing to set point for an hour. View and Download Sub-Zero BI-36R use & care manual online. The other day I found everything in the freezer totally defrosted - I suspect it had been off for 48 hours or more. A Sub-Zero ice maker repair manual offers more troubleshooting tips that you can try in order to remedy a faulty ice maker. I've been chasing a defrosting problem for years. Keep your system efficient and warm—discover expert insights in our guide! 08 8296 7888 I have a Sub Zero Model 550 with the freezer in the bottom. Start by disconnecting the wires from the heater terminals. Features/Benefits Get Sub Zero Off Cycle Defrost in Rajkot, Gujarat at best price by Shiv Ref-Air India LLP and more wholesale traders with contact number | ID: 2853529093988. NOTE: GENUINE APPLIANCE PARTS SALES IS NOT AFFILIATED IN ANY WAY WITH THE SUB ZERO CORPORATION. When this happens, your Sub-Zero might start feeling subpar, leading you to reset it to restore its optimal performance. Knowledge Base > Sub-Zero > 700 Series > 700 Series > 700TC TALL UNIT REF/FRZ > 700 Service Manual. Initiating Manual Defrost. 6 Sub-Zero EC24 - "Defrost Underheat" What this means-EC24 is a code related to your defrost system. They feature a dual refrigeration system, which uses separate evaporators and compressors for the refrigerator and freezer, preventing air sharing between the two compartments and maintaining optimal Sub Zero refrigerators have a defrost cycle feature where the fridge gets rid of excess frost and moisture through a defrost drain. The freezer Replacement parts for Sub-Zero Refrigerators, freezers and Icemakers. 3081180 Sub-Zero Refrigerator Defrost Timer. Genuine Sub-Zero part for defrost cycle reliability. 5 oz. Download or read online manual, installation instructions, specifications, pictures and questions and answers For your convenience your Sub Zero unit is equipped with an auto matic defrost system The refrigerator section will defrost during each off cycle of the refrig erator The freezer section iscon trolled by How to Defrost Sub Zero Freezers: A Step-by-Step Guide. View online or download Sub-zero 550 Technical Service/Training Manual, Service Manual, Information Manual, Installation Instructions Manual Automatic Defrost. July 26, 2024; 11:11 am Page 5 General Information Integrated (Integrated (700-2) Series2) Series #3756780 - Revision D - July, 2005 1-8 Model 700TR-2(Figure 1-3) 700 Series Tall Refrigerator (All Refrigerator with Two Temperature Zones - Upper Refrigerator over Two Drawer Refrigerator) 2nd Design Build (Unit is 80” H x 27” W x 24” D) Defrost heater. The drip tray is designed to collect condensation from the defrost cycle. The only time the compressor stopped running was when the defrost cycle kicked in. Standard Grille Removal. You can store them in another freezer if you have a Defrost Cycle Issues: Sometimes, your fridge might get stuck in a defrost cycle. If the defrost drain is dirty or clogged, ice will begin to form. Don’t scrape the coils. Sub-Zero refrigerators use an automatic defrost system that melts frost buildup on the evaporator coils. 2. The fridge defrost We have 1 Sub-Zero 736TCI-3 Built-in Bottom Freezer manual available for free PDF download: Service Manual Sub-Zero 736TCI-3 Service Manual (136 pages) Integrated 700-3 TALL Series Contact Us For assistance with trade-specific questions, call (866) 689-9653 01 - Sub Zero Refrigerator Defrost Control Board. 200/300 and 500 Series units: Freezer section automatically defrosted based off compressor To Manually Defrost a Sub-Zero: A manual defrost is completed by disabling the refrigerator or freezer section. Get Best Price. An HVAC technician can fix your defrost cycle. Ice build up around the freezer evaporator. A gurgling or hissing noise from a Sub-Zero can be attributed to a number of things, such as a partially plugged drain tube, water drainage during the defrost cycle, or evaporator operation. Defrost time: 6 hours, defrost cycle: 21 minutes; Exact OEM features and specifications; Wiring Instructions Included; WARNING: Prop 65 info; Locate a Distributor Near You Most freezer models have a defrost cycle that lasts for approximately 25 to 45 minutes. Time–temperature: The defrost cycle is turned ON based on a timer (e. Here are the most common reasons your Sub Zero fridge's defronst drain is clogged - and the parts & instructions to fix the problem yourself. These issues are often connected and need careful checking. Monitor Compressor Run, Displays if Service or Condenser Cleaning Is Needed. the defrost thermostat does not turn the fridge on and off but it does turn the defrost heaters off before the timer times out on defrost - - timer goes into Sub-Zero Freezer Company, Inc. Depending on unit configuration the timer Is your Sub-Zero refrigerator not defrosting or is freezing over? You can find useful tips on how to fix your defrost cycle in our guide. Then, open the door of the freezer. We will now explain how to test for amps in a cooling cycle, but be sure to read our whole unit wattage analyzer approach too. Defrost time: 6 hours, defrost cycle: 21 minutes. How Heat Pump Defrost Cycles Work. If the defrost cycle fails to run the refrigerator will build enough ice to block the airflow, which Knowledge Base > Sub-Zero > 700 Series > 700 Series > 700TR TALL UNIT ALL REF > 700 Service Manual. Add to my manuals. Maintenance and Cleaning. Your heat pump has a defrost cycle. 601R-2 refrigerator pdf manual download. If the defrost heater and defrost thermostat are 3a- Malfunctioning Defrost Cycle. Defrost Timers are not used on refrigerators, only freezers. Manuals; Monitor and Control Off-Cycle Defrost. This process typically occurs every 6-8 hours and takes about 20-30 Here are the most common reasons your Sub Zero refrigerator isn't defrosting - and the parts & instructions to fix the problem yourself. This way, there will be efficient cooling and less energy waste. DEFROST HEATER Watts Amps Ohms DRAIN TUBE HEATER Watts Amps Ohms DRAIN TROUGH HEATER Watts Amps Ohms FILL TUBE HEATER Watts Amps Ohms WATER VALVE Watts Amps Ohms (Inductive) THERMISTORS (Evap & Compartment) Ohms at 32°F / 0°C 10 oz. Keep an eye on it and see if it evaporates or stays full. Features/Benefits. 6 695 / 695 “Adaptive Defrost” Defrost intervals and duration vary by unit use. Cycle Defrost” Evap > 38°F before Compressor ON; Fan ON at high offset-----30000 - 33000 8. • Call Sub-Zero customer care at 800-222-7820 or visit our website, subzero Since you got an after market defrost timer the timer motor may be going to the wrong terminals on the connector , most timer motor are wired 1 and 3 but some are 1 and 4 depending on the refrigerator circuit . This cycling process is part of the temperature regulation mechanism, where the compressor turns on to cool down the Off-Cycle Defrost. Box 44988 Madison, WI 53744 - 4988 Customer Service & Parts / Warranty Claims Phone #: (800) 222 - 7820 Heaters, Defrost Terminators, Drain Pans, Drain Tubes, Wiring, Light sockets & bulbs, Icemakers, Water Defrost Thermostat: The defrost thermostat is a crucial component that controls the automatic defrost cycle in the freezer. Shopping. In both cases, no service indicator errors showed. 4200740* 4200740 Sub Zero Manual Defrost: Empty the fridge and allow it to defrost completely, checking for dripping water that might indicate a problem. Wiring instructions included. If the heater does not work, frost will build up on the evaporator coils. Help. SZ3081180. Remove the food items in the freezer and store them somewhere else. 24. Grille Removal. Sub-Zero recommends that only a professional repair service address this After defrost cycle ends, follow directions in the interactive display, example: LET STAND COVERED. However, if you notice excessive frost accumulation, manual defrosting may be necessary. Door Seal Issues Yes, it is normal for a Sub-Zero fridge to cycle on and off periodically. IndiaMART. Heater filament has resistance, as does terminator. Fits 201FD, 201RIM, 211RFD, 215FD, 22IM, 241RFD, 244RFD, 245RFD, 249FF Your best bet for ducted units is american or european as they are designed to deal with sub zero temps. It appears you don't have a PDF plugin for this browser. Wolf BI Series refrigerator pdf manual download. New control board did not solve problem. 1-800-269-2609. The drain pan was so full, it fell from the weight. If the defrost timer is defective, it may not advance into the defrost cycle, or it may not send power to the defrost heater during the defrost cycle. every 6 hours) and turned OFF when a thermostat attached to the evaporator coils signals that a pre-set temperature threshold (e. Also for: 601rg-2, 611-2, 611g-2, 632-2, 642-2, 650-2, 650g-2, 661-2, 685-2, 695-2, 601f-2. Problem: When your Sub-Zero Freezer doesn’t defrost properly, it can Contacting Sub-Zero Customer Support. Small amounts of frost should disappear after the unit goes through a defrost cycle. Messages. Step-by-Step Defrosting Instructions The Sub-Zero Terminator Defrost 55 SVCE (Part Number: 7006594), previously known as 3082060, is an essential component for the defrosting cycle in Sub-Zero refrigeration systems. It melts any frost that forms. Heat pump defrost cycles are activated automatically when the outdoor temperature drops below a certain threshold and the system detects the formation of ice on the outdoor coils. Technical Data 9-4 200 Undercounter Series #7002667 - Revision A, November, 2006 Model 249FF FREEZER *** Automatic Defrost Every 6-12 Hours of Compressor Run Time 30°F (-1°C) 55°F (13°C) 400 3. Drain Heater <----- CLICK HERE Cause: One of the defrost system’s wires isn’t receiving any voltage, preventing the start or stop of the defrost cycle. Panellized Grille Removal. The timer ends the defrost cycle and the Knowledge Base > Sub-Zero > 700 Series > 700 Series > 700BR BASE UNIT ALL REF > 700 Service Manual. Today I vacuumed the condenser filter screen. . This process typically occurs every 6-8 hours and takes about 20-30 minutes. A multimeter See Manually Defrost a Sub-Zero for instructions. 2. Get Best Quote. Also for: Bi-36u, Bi-42sd, Bi-48sd, Bi-42sid, Bi-48sid, Bi-36uid, Bi-36-ufdid, Bi-42ufdid, Bi-30u, 4380000. If these troubleshooting steps do not resolve the issue, service is necessary to expertly diagnose and repair the product. Master Power Switch. In this article, we’ll explore the top causes of water leaking from the freezer This drain is crucial because it carries melted Experiencing over-freezing issues with your Sub-Zero fridge? Learn what to check and discover effective solutions to fix the problem. The main function of your freezer’s defrost cycle is to prevent frost buildup. Explore Sub-Zero Built-In Refrigerator manuals with AI-powered Q&A and PDF download. Get quick answers online, or reach a certified service provider or installer Learn how reverse cycle air conditioners manage defrost control in winter. Manuals; Brands; Sub-Zero Manuals; Refrigerator; Monitor and Control Off-Cycle Defrost. Wait 24 hours for the unit to return to normal temperatures and frost to clear after correcting any of the above. $45. Many refrigerators have part of the condenser tubing coiled up in the drain pan to heat and evaporate the condensate. To melt this away, the unit needs to carry out a defrost cycle from time to time. This service part is genuine and factory-tested, View and Download Sub-Zero 532 information manual online. Frost or ice inside of food packages is a result of moisture being locked within the package. During off cycle defrost, if the compartment temperature reaches high offset before the evaporator rises to 38°F Sub-Zero 7014648 Refrigerator Defrost Timer 21M Defrost Time; 6H Cycle Time; 120V . Get quick answers online, or reach a certified service provider or installer. Rsun Technologies - Offering Digital On-Off Sub Zero Sz-7529t Off Cycle Defrost Freezer Controller For Temperature Indicator at ₹ 850/piece in Mumbai, Maharashtra. This is a job for a professional. Is your refrigerator freezing? It is highly SZ7014648--DEFROST TIMER 7014648. Low Refrigerant. It is possible to disable the freezer or refrigerator section alone in Sub-Zero The following are steps to easily defrost the freezer of a Sub-Zero refrigerator: 1. This means that there is a high probability your evaporator coil is frozen over or experiencing a defrost issue or airflow issue. 532 refrigerator pdf manual download. 6 / ~1. 26. $44. But if you still can't fix the problem, you may want to research the problem further by visiting the Sub-Zero website to find a service provider or by calling Sub-Zero product support Defrost Problems. Defrost problems can come from different sources. Refrigerator Off-Cycle Defrost in BR-2: 47 Sub-Zero is one of the most dependable appliance brands, famous for its unique manufacturing style and high-quality builds that can last for decades to come. PART MEETS ALL OEM QUALITY STANDARDS *This is a high quality aftermarket product. Explore our blog for insights on troubleshooting these issues. Title: SZ-7521-P Manual (REV-3). SZ3081180--DEFROST TIMER 3081180. If the defrost cycle doesn’t stop, you’ll find your refrigerator runs constantly, risking a condenser malfunction and increasing energy usage. Just follow our instructions to replace the defrost timer in Sub Zero 532. This part is very important for the automatic defrost cycle in your Sub Zero refrigerator. PRO 48 refrigerator pdf manual download. If the evaporator fan is not running DEFROST TIMER - This high-quality part is a direct replacement for Sub-Zero 7014648. What problems can arise from a malfunctioning defrost cycle? A malfunctioning defrost cycle can lead to several issues, most notably decreased cooling efficiency. 27 7014648 Sub Zero Refrigerator Defrost Timer. 6-Hour 21 Minute Cycle. The one below works by clamping on the defrost heater and then it gets warm to thaw the drain every time the defrost cycle operates. 222. Also find Sub Zero Temperature Controllers price list | ID: 26321266262 Customer: My sub-zero bi-36 drain has frozen 3 times in 3 weeks. Turn the unit off by unplugging it from the wall outlet or tripping the circuit breaker off. It ensures that the system's defrost mechanism functions correctly, preventing ice buildup and maintaining optimal performance. Replaces obsolete 3-08-105-0 3081050 3-08-108-0 3081080. This defect can result in excessive frost accumulation within the unit, impeding its cooling efficiency. The refrigerator section will defrost during each off cycle of the refrigerator compressor. The first louder click is when it goes into the defrost cycle, and second louder click is when it comes out of the defrost cycle, and back into the cooling mode. Sounds. SZ 7520 T: Input Type: NTC: Temperature Range-45 DegreeC to +99 DegreeC: Mounting Type: Panel: Country of View and Download Sub-Zero Wolf BI Series service manual online. 7014648 Sub Zero Refrigerator Defrost Timer. A Sub-Zero drip tray overflowing can cause water leaks. The defrost heater in a Sub-Zero refrigerator is located near the evaporator coils. Sell. Quality and Fit guaranteed or your money back. Download Table of Contents Contents. This rating and spec for the Sub-Zero includes both compressors, the defrost heater, If defrost and cooling are the two options for amp testing, the easiest is the cooling cycle. 30°F / -1°C 70°F / 21°C 400 3. 42 160. If not promptly addressed, it may lead to more >Electric< Large Kitchen and Home Appliances - Sub-Zero 550 Freezer Shuts Off - I have a 1994-built Sub-Zero model 550 refrigerator - it's the type with freezer on the bottom. Sub-Zero 550 Manual Online. Given that the fridge got below the -8 cutoff point, I'm questioning if the freezer control This is perfectly normal and will even happen when the outside temperature is in low single figures - it doesn’t even have to be below zero. cdr Author: Pavan Sakpal Created Date: 2/4/2020 1:08:31 PM Talk directly to a customer care expert at the Sub-Zero, Wolf, and Cove service center, or connect with an appliance consultant at an official showroom near you. BI-36R built-in refrigerators pdf manual download. There is no mechanical timer according to the model number/diagram. Fits 201FD, 201RIM, 211RFD, 215FD, 22IM, 241RFD, 244RFD, 245RFD, 249FF I have a 1998 Sub-Zero 601F/F with a model number prior to #1810000. Refrigerator Fan-Assisted Off-Cycle Defrost: 22 Sub zero 650/F purchased about 1998. FIts Model 550 and several others. If the refrigerator's defrost drain is clogged, it's possible the evaporator fan motor is not working. Not once did it stop for a In a case like that, there will excessive ice buildup which will melt during the defrost cycle thus causing an overflow of the drain pan. there is no voltage to the heater element when forcing a defrost cycle by pressing and holding ice button. During the off cycle defrost, if the refrigerator compartment temperature reaches high offset (calling for cooling Defrost time: 6 hours, defrost cycle: 21 minutes. A working 3081180 Sub-Zero Refrigerator Defrost Timer. 037 2830 - 3470 50 0. 5 minute compressor delay after each defrost. Sub Zero SZ-7510P On View and Download Sub-Zero 601R-2 technical & service manual online. 14 >Electric< Large Kitchen and Home Appliances - Sub Zero 561 not cooling - Hi, I'm having problems with a sub zero 561. The best way to proceed now is to unplug the freezer, and turn that knob clock wise. Direct Replacement Defrost Timer to Replace Sub-Zero®, includes wiring instructions. 500 Series. The freezer can defrost once or twice a day. In order to prevent the wall from freezing over completely in Sub-Zero refrigerators, it is recommended to run a defrosting cycle once in a while. They usually have a gas or electric heater that comes on when it's cold inside to boost the temps up, and use that heat source for every defrost cycle so there's always hot air supplied, even during defrosts. DEFROST METHOD DEFROST TERMINATOR Cut-In Temp. 5”-1 psi to 8-15 psi 75 psi to 120 psi 7002345 EGX70HLC ~1. The defrost control board determines how often to run the defrost cycle. Same Day Shipping Mon-Fri 9AM-3PM EST. Monitor and Control "Adaptive Defrost. A clicking sound emanating from a faulty defrost timer in your Sub-Zero refrigerator is more than just a minor annoyance; it signifies a malfunction in the appliance’s defrost cycle. Sub-Zero refrigerators are high-end appliances known for their advanced food preservation capabilities. Refrigerator section will defrost during each off cycle of the refrigerator compressor. Sub-Zero 550 Defrost & Subsequent Water Leak It sounds like maybe the defrost cycle is Sub-zero 532 Pdf User Manuals. It is triggered when your sub zero computer has sensed that a defrost cycle has run longer than it is supposed to. This specialized system minimizes frost buildup and eliminates the need for manual defrosting. Freezer section is controlled by an energy-saving adaptive defrost system and defrosts as needed. +91 -77200-11125 | Sub Zero Reefers is among India’s prime Refrigerated trucks in India featuring the latest defrost technology, which doesn’t allow ice to form and provides maximum cold. Before replacing the defrost control board, first test the defrost heater and defrost thermostat. 4 | Sub-Zero Customer Care 800. Defrost cycle not working. If this cycle isn’t working, ice can build up. Talk directly to a customer care expert at the Sub-Zero, Wolf, and Cove service center, or connect with an appliance consultant at an official showroom near you. It prevents ice buildup, ensuring the cooling system works efficiently. The cycle starts periodically and automatically, melting accumulated ice into water. Noises may be more noticeable when doors are open. 5°C) has been exceeded;; Time–pressure: The defrost cycle is turned ON by a timer, and OFF when a pressure switch signals that the refrigerant pressure in the Discover 10 faulty defrost system causes in refrigerators. This is commonly referred to as freezer burn. We make fixing things easier! En español. The fridge works great all the time. defrost cycle or compressor operation. Full Screen Toggle Next Manual Freezer Evaporator Defrost: 14 Fan-Assisted Off-Cycle Defrost“ (BR) 20 View online or download Sub-zero 600 Series Technical & Service Manual, Information Booklet, Service Manual. This also needs an HVAC tech to fix. 40. Product Details: Brand: Sub Zero: Model No. We make fixing things easier! Sub-Zero freezers utilize a cycle defrost system, not a self-defrosting one. Can you advise next step? View online or download Sub-zero 601F/F All Freezer Specification Sheet. Defrost Problems. Noises may be more Sub-zero Off Cycle Defrost Freezer Controller SZ-7520-T. PREMIUM REPLACEMENT - Supco SZ7014648 defrost timer is designed Understanding Sub-Zero Refrigerators. 7820 Integrated Features FEATURE PG 1 Product Rating Plate 2 2 Electronic Control Panel and Display 5 3 Freshness Cards (column models) 6 4 Door Shelves 6 5 Dairy Compartment 6 6 Glass Shelves 6 7 Deli Drawer 7 8 Refrigerator Drawers 7 9 Storage Drawers 8 10 Crisper Cover 8 11 Automatic Ice Maker 9 12 Ice Container 8 13 Defrost Cycle Issues: Sometimes, your fridge might get stuck in a defrost cycle. Understanding the Defrost Cycle. And much more. If the door was left open for an extended period of time or not closed completely you could have had a large amount of water drain during the defrost cycle. Limited 30 Day Money Back Guarantee & 1 Year Replacement Warranty.