KNOWLEDGEBASE & FAQS

September 15, 2025
KNOWLEDGEBASE & FAQS KNOWLEDGEBASE & FAQS << Back to all categories Video Library PDF Library Knowledge-base External Links Discontinued Kilns Receiving Wiring Diagrams Dimension Drawings Home> Support> Kiln Resources> Knowledgebase for L&L Pottery Kilns Knowledgebase and FAQs SEARCH> Category Installation Is there a Kiln Installation Checklist? Electrical: Can I use Three-Phase Wye Power on a Three-Phase Delta wired kiln? Electrical: Do I need a separate electrical line for my kiln? Electrical: How can I protect an existing power supply? Electrical: How do I hook up my kiln to power? Electrical: How do I know if I have 240 or 208 volts and single or three phase? Electrical: How do I switch my kiln from 3 phase to 1 phase and vise-versa? Electrical: How to size the circuit breaker, fuses, cord and/or power supply of your kiln. Electrical: Is it OK to have a 24 amp e18S-3 kiln on a 50 amp circuit? Electrical: Is three phase cheaper to run than single phase? Electrical: Should you replace a K18 power cord? Electrical: What does it mean to direct wire a kiln? Is there a power cord? Electrical: What is a GFCI or GFI Breaker or Outlet and why might it trip when used with an electric kiln? Electrical: What is Branch Fusing and where is it used? Electrical: What is the difference between 220 volts, 3 phase and 380/220 volts, 3 phase (Non-USA)? Electrical: What wire size is used to connect a kiln? Electrical: Where can I get more information about electricity and voltage? Electrical: Why is the 3 phase WYE 2 section kiln Amp listing lower than the actual amp reading on Neutral? Location: Can I install my kiln on a non-fireproof floor? Location: Firing a kiln safely in a garage Location: Where should I put my kiln? My kiln is going in a garage/ shed/ covered porch. Do I need the kiln vent? Assembly Can you remove the door of an Easy-Load kiln? Hinge: How to reduce tension on the Easy-Lift Spring Hinge Hinge: Should you use the latch on an "Easy-Lift" Lid? Hinge: What is the purpose of the latch on the Spring Hinge? How easy is the set up of L&L sectional kilns? The Spring Hinge does not go all the way back. What is wrong? There are small ceramic discs wedged in the element holders. What are they for? Thermocouples: Markings on Type S Thermocouples and lead wire colors Thermocouples: Where do T1, TC2 and TC3 go on a kiln? Weight of Kiln Rings or Sections and Tops and Bottoms for Lifting Guidance Ventilation Calculating ventilation requirements for heat from a kiln room At what temperature should you turn off the Vent-Sure kiln vent? Can you use a centralized vent system instead of the Vent-Sure Vent? Can you vent through the roof? Can your Vent-Sure discharge out of the roof instead of the wall? Dimensions of the Vent-Sure wall-mount bracket and fan motor assembly Do I need a vent? Do you need a kiln Downdraft Vent with a Hood Vent? Do you need to insulate the ductwork for a Vent-Sure? Does my Vent Motor require lubrication? How do I control my vent fan motor with my Genesis or DynaTrol? How do I know if my vent is pulling enough air through? How is the vent controlled? How Long can the Ventilation Duct be? How long does a Vent-Sure downdraft vent last? How to control an external ventilation system How to create an interlock that prevents the kiln from firing unless an external ventilation system in on? How to vent your kiln if you do not have a downdraft vent like the Vent-Sure? Is the Vent-Sure controlled by the kiln or is there a separate power supply? Is there a specification for what height to install a vent hood over a kiln? Should you prop the lid up to remove moisture or does the vent take care of this? What do I do if I still smell something and I am using a Vent-Sure Downdraft kiln vent? What should I do to ventilate my kiln? Why are no holes drilled int the lid of L&L kilns that are vented? Operation Bartlett 3-Key: How do I program general instruction panels for 3-key Bartlett Bartlett 3-Key: How to add soak or change temperature to a 3-Button Bartlett Control or Custom Programs in the One-Touch Control during a firing Bartlett High Limit: Is there a reset button? Calibration: Cone Offset Calibration: For uniformity issues, Plug Peepholes Calibration: How to fire very precisely using witness cones Calibration: How to Manually Control When Your Vary Fire Program Stops Firing but Still Maintains a Controlled Cooldown Calibration: Thermocouple Offset Calibration: Thermocouple Offset and Cone Offsets Calibration: To check uniformity and heat-work: Place Cone Packs in the Kiln Calibration: What can I do to promote even kiln firings? Calibration: Why does the temperature read-out on my hand-held pyrometer differ from the temperature shown on the DynaTrol? Can you use Advancer Shelves in an L&L Kiln? DynaTrol: Can the DynaTrol count the number of firings of the kiln? DynaTrol: Differences in DynaTrol Boards for installation (600 vs 700 series) DynaTrol: DynaTrol is blinking DynaTrol: How do I control the cooling with the DynaTrol? DynaTrol: How many times has the kiln been fired? DynaTrol: How to add soak to or reprogram a DynaTrol during a firing DynaTrol: How to Change the cycle time of the DynaTrol Control DynaTrol: How to create very long programs in the DynaTrol? DynaTrol: How to fix DynaTrol keypad buttons if they stop working DynaTrol: How to interpret a garbled message on the DynaTrol DynaTrol: How to Program Easy-Fire Programs for DynaTrol DynaTrol: How to use the PreHeat feature in the DynaTrol DynaTrol: I have a two section kilns and got a FAIL TC 3 message DynaTrol: Programs in Excel Format DynaTrol: Standard Easy-Fire Program Profiles in the DynaTrol DynaTrol: The DynaTrol shows cone 05 after I program it for 5 or 06 after I program it for 6 DynaTrol: The Hidden Menu in the DynaTrol - what it does and how to make changes DynaTrol: What the final temperature reached in a program on a DynaTrol? DynaTrol: What to do if there is no display on the DynaTrol Firing: Adjust Kiln Load if you have uneven firing Firing: Can I cool my kiln faster than it would normally? Firing: Fast or Slow Glaze or Fast or Slow Bisque? Firing: How do hold times and heatwork affect my work? Firing: How do I fire with fewer kiln sections on my Jupiter Kiln? Firing: How do I fire with fewer sections on my five section kiln? Firing: How do I fix pinholes and blistering in glazing? Firing: How do I program a slump or tack or full fuse glass program? Firing: How soon after the test firing can one bisque fire? Firing: How to Fire - General instruction panels for Dura-Fire. Firing: Should I turn off the kiln with the On/Off Switch? Firing: Where can I get good information on how to fire my kiln? Firing: Why use slow bisque over fast bisque? Is it just a moisture issue? Genesis: How to Change Thermocouple Type (Type S or Type K) on a Genesis Genesis: How to create custom program in the Genesis Control Genesis: How to Disable the Alarm Sound on a Genesis Control Genesis: How to find the latest Revision for Genesis Software and Update Genesis: Troubleshooting WIFI Issues on Genesis Control How to Fire a Kiln using Cones to turn it off Loading: How do I load my kiln properly? Loading: How much weight can go in a kiln? Loading: How to Place Posts when Loading a Kiln Manual Control: How deep should a Kiln Sitter Tube go into a kiln? How do you adjust the depth? Manual Control: How do I adjust my kiln-sitter? Manual Control: How to fire - general instructions for Manual Kilns One-Touch: Can't Change Options on One-Touch Control One-Touch: Control Calculator Spreadsheet Programming: How do I enter a really slow program? Programming: How do you program a controlled cool down in the DynaTrol or One-Touch control? Programming: How high can the DynaTrol or Genesis be programmed to fire to? Programming: How to Ensure that Kiln Has Been Programmed Correctly Programming: How to program a slump or tack or full fuse glass program into my 3-Key Bartlett Control or One-Touch Control? Programming: Why does my kiln jump over the Preheat without holding at the Preheat temp? Thermocouples: How can the thermocouple wires get reversed on a Jupiter or DaVinci Automatic Kiln? Thermocouples: How do I know which thermocouples to get for my kiln? Thermocouples: How to Change Type (Type S or K) on DynaTrol Thermocouples: What are Thermocouples? Thermocouples: What is a thermocouple (TC) and how does it work? Maintenance Brick: Drilling Holes for Peepholes Brick: How to Fix Lid Seal Brick: My firebrick has some cracks. What should I do? Brick: Repairing Small Holes & Chips in Brick Brick: Stop Heat Leakage Brick: What is L&L's brick facing for and how do I use it? Case: Do kiln stands rust and what should be done about it? Case: Tightening Stainless Bands Control: When do you need to replace the Control Board? Electrical: How to Check Wires and Wire Connections Elements: Can I put Small Elements in an Element Channel designed for Large Elements? Elements: Drilling for the Element Connections Elements: How can I extend ceramic kiln element life? Elements: How can I tell the difference between elements wired in parallel versus series? Elements: One of my elements failed, should I replace them all or just the one that failed? Elements: To stop heat leakage: Plug Element Holes Elements: What size elements should I order? Elements: What sort of pliers should I have for installing the very thick series elements into my kiln? Elements: Which kilns have element circuits wired in series and which are wired in parallel? Elements: Why are some elements not twisted? Elements: Why is the element for the powered bottom not long enough? Hinge: Spring Tool for Older Easy-Fire Hinge Assembly is Missing How to move DaVinci Cord Connection to make them cooler I blew up a a piece of ceramic, how do I get glaze out of the wall and off the element? Longevity: How long does a kiln last? Longevity: How should my kiln be maintained on a regular basis? Relays: How long do relays last? Relays: My contactors / relays are wearing out too quickly - what can I do? Shelves: How many times do I coat my shelves with kiln wash? Why do my DaVinci kiln sections move out of alignment or slide off the floor slab over time? Troubleshooting Electrical Supply Problems and slow kiln performance Element Connections are glowing. Why? What should be done? Error Codes: Control reads higher temperature than my studio. No error code. What is wrong? Error Codes: Display Reads 2400 or CPLt When it Starts Up Error Codes: E-4, E- 4, or Err4 Error Codes: How and Why to Turn Off Error Codes: How to fix E- 2 or Err2 Error Codes: How to fix E-1 or Err1 Error Codes: How to fix E-22 or E- 6 error Error Codes: How to fix E-5 or Err 5 Error Codes: How to fix E-d or Errd Error Codes: How to fix PF, E- P, E-P, ErrP Error Codes: List of All Error Codes Error Codes: What is the E- A code on the DynaTrol and how do you fix it? Error Codes: What to do when you see "FAIL"? How can my kiln section stay on all the time in my computerized kiln, even when the on/off switch is off? How can my kiln section stay on all the time on my manual kiln even when the kiln-sitter is off? How do I keep elements from falling out of the element holders in the corner of a kiln? How to Check Circuit Breaker or Fuses How to Check Control Fuse How to Check if Elements Have Differentially Changed in Resistance How to Check if internal control switches are bad How to Check operation of the On/Off Toggle Switch How to Check Polarity of Thermocouples and Lead Wires How to Check Power Cord How to Check Thermocouple Tip How to Check Transformer for proper operation How to Check Your Voltage How to Diagnose a Slow Firing Manually Controlled Kiln How to fix elements falling our of ceramic channels How to handle power interruptions, blackouts, and bad electrical power grids How to recall at what temperature an error occurred in a DynaTrol control Kiln stalls or stop heating with lots of clicking (relays) & no error code Manual Kilns: What do I do if the kiln doesn't heat at all? Restarting the Kiln after Getting an Error Message The center of my kiln gets too hot compared to the top and bottom. The contactors on my Easy-Load, or Davinci kiln are loud. What can I do about it? The controlled cooling on an Easy-Fire keeps changing. Why? The temperature in the control is jumping erratically. How do I fix it? Trouble with Kiln-Sitter. What to do? Troubleshoot an INF infinite input switch What do I do if I get error message "E-A"? What do I do if I overfire and melt clay and/ or glaze all over the inside of the kiln? What do I do if the control display doesn't show anything? What do I do if the display is normal but the kiln won't heat up? What do I do if the kiln heats too fast? What do I do if the kiln stalls? What happens if the power goes out while I am firing? What makes elements melt and sag? What to do if the kiln fires slowly? What's the worst thing that can happen from restarting after an Error Code? Why do I get TC-- code when I run my 3-button Bartlett Why does my 8, 10, and 12 sided kiln lid open more in the front when I fire? Why does my DaVinci kiln lid open more in the front when I fire? Why does my kiln corrode so quickly? Why does my kiln seem like it overfires the pottery? Why does my kiln seem like it underfires the pottery? Why does the kiln's breaker keep tripping? Why kiln amperage is higher than the rating when first turned on Service Checking & Replacing Power Relay How to remove Panel for Service How to replace control How to replacing a Control Transformer in an L&L Automatic Kiln Parts: Are parts available for all L&L kilns? Parts: Are there different size element holders? Parts: Can I buy and use L&L element holders for a kiln I am building or on other kilns? Parts: How does L&L ship parts? Parts: What are the packing charges for parts? Parts: Where can I get parts? Parts: Why should I use L&L elements? Replacing Bottoms Replacing Element Channels Replacing Firebrick in Sides of a Sectional Kiln Replacing Fuse Holder Replacing Lids Stretching Elements Testing Element Resistance Where can I get service? Why do stainless steel threads become jammed on element terminals? Will working on your kiln void the warranty? Resources Can I convert a manual J230 to an automatic JD230? If so, what parts are required? Can I convert an old K Model, P Model, H Model or other old L&L manual kiln to be automatic? Can I convert my older J Series Manual Econo-Kiln to an automatic kiln? Can I get a 30 amp plug on an e18S-3? Can I purchase kiln furniture separately instead of in the model-specific kits? Can L&L ship kilns collect? Can L&L ship kilns Prepay and Add? Can you add a section to an Easy-Fire Kiln? Can you purchase a kiln with the Pull apart Option & Easy-Lift or Standard Hinge? Certification & Standards: What is a UL499 listing? Changing from 208 volts to 240 volts - what to do? Do you make 480 volt kilns? Do you need APM elements for JH and eQuad-Pro kilns? Do you need to register your kiln for the warranty? Does it make sense to buy a JD18, JD23 or JD2918 and then add a section to it later? Does L&L Export? Does L&L make a wall mount control that I can plug my kiln into? How are L&L kilns packed? How much does it cost to ship a kiln? How old is my kiln? How to pack a kiln for moving I have an old L&L Kiln that I want to sell. What is it worth? I just bought an old L&L kiln and it's in great shape. How do I get instructions? I want to do reduction firing with alcohol drip. Does L&L provide any coating on elements to improve lifetime in such usage? Is a powered bottom necessary? Notes on Sectional Kiln Construction Should I get a powered bottom? Switching a manual kiln from 208 volts to 240 volts What are graded elements and how do they work? Does L&L use them? What do I do if there is shipping damage? What does it cost ($) for the electricity to fire the kiln? What freight companies does L&L use? Can I specify a freight company? What is so great about Dyna-Glow Hard Ceramic Element Channels? Do they cost more? What is the difference between a JD230 and a JD230-EZ? What is the difference between a Jupiter kiln and a DaVinci kiln? What is the difference between an Easy-Fire kiln and a Jupiter kiln? What is the difference between the Easy-Fire Kilns and the School-Master kilns? What is the FOB (Freight on Board) point? What is the freight classification? Where can I buy L&L Kilns? Why does L&L's Easy-Fire e28T-3 3-phase kiln have a maximum cone of 10, while some other popular brands have a maximum cone of only 8? Why does the e23T go to Cone 10 but the e28T only go to Cone 8? Cautions Can you fire a kiln at night unattended? Can you use a kiln for carbon burnout? Does the digital controller have a way to prevent an over fire? DON'T MELT KILN: Check the Control Configuration if you replace your control What is "Kiln Cloth" or "Kiln Paper" and can I use it in my electric kiln?

September 15, 2025