How do i fix a com port error. Popular Canon PIXMA questions, problems & fixes.

How do i fix a com port error. I'm following the instructions on the install page (I think) but I cannot seem to get PuTTY to connect Apr 22, 2021 · But when I click Next, I always get the error "cannot open the com port, the port may be used by another application' THis is from a clean boot, how do I see what else is using the port? Sometimes COM ports fail to connect, due to them being in use. Stop the Windows Fax and Scan service. The best solution you'll get from books at These are books containing info on repair, service, troubleshooting, parts info, assembling dissemble, removal, error/fault codes, wiring diagrams and everything on any vehicles cars, atv, trucks. Internal modems (win-modems) are best installed using the install package meant for them as this includes the correct setting up of the com port (int. Aug 5, 2016 · Brian60: From what I see it's looking for COM1, in the list under tools>ports, its listed as COM3 If it's on COM3 then you need to select Tools > Port > COM3. com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. I would highly suspect that it's simply not capable of running at that speed. Check the Device Manager; right-click on My Computer, select “Manage” from the context menu, select “Device Manager”, expand “Ports Com & LPT”. I identified the class GUID ID, 4D36E978-E325-11CE-BFC1-08002BE10318, for serial ports from this list. Aug 22, 2008 · At the speed that you are running are you using handshaking? When you have a hard-wired and the serial port settings match, framing errors are usually caused by bad cables or noise on the line. Mar 8, 2025 · Serial Port Troubleshooting guide provides basic, practical information on understanding and troubleshooting RS-232 connections. Jun 4, 2016 · View recent Coast questions, problems, & answers. 1 or earlier. Fax software or a Nov 7, 2014 · When I reset the core and try and access it using the same details, it doesn’t work. Jan 22, 2020 · How do I fix Unable to open serial port? Make sure that you have the necessary drivers. Resolving COM Port issues AnyTone 868 878 878Plus If you are experiencing connectivity issues with your radio, there are a few things we can try. Cable uses a CH340 chipset, which both versions of Windows seem to recognize without a problem. If COM1 is there, then another program has left it open. First, make sure the serial port exists. Try using a different cable. Find expert solutions to common issues, DIY guides, repair tips & user manuals for all PIXMA Office Equipment & Supplies. Resolve USB port issues like not working, unresponsive devices, error messages, or ports not fitting. Reinstall the serial port driver. Jun 27, 2025 · Whether you’re a novice user or an experienced technician, understanding how to enable and troubleshoot COM ports in Windows 10 can save you valuable time and help maintain seamless hardware integration. This process involves using the Device Manager tool, which is built into the Windows operating system. Let's fix the world, one device at a time. It will cause liquid to go to the pump and destroy your pump. Feb 29, 2024 · When I try to use the peripheral on a Windows 11 laptop (I tried two of them from different manufacturers), I get a message that the COM port is in use. tech/p/tools. Mar 28, 2023 · The Windows Update Error 0x80248014 occurs due to many reasons like corrupted update components. if after reinstalling (and having the code cleared from memory) the Recent Portal Camping, Backpacking and Hiking questions, problems & answers. Oct 18, 2024 · How to deal with serial port connection problems? With our “Serial Port Troubleshooting Guide,” you will learn about the main characteristics of the RS-232 communication and find out about the most common serial port errors. May 6, 2020 · On the old Volkswagen Passat B5 (MY 1997-2001) the Data Link Connector (DLC) or diagnostic port is placed on the right side of the parking brake lever, under a small rectangle rubber cover. When I try to sign into Teams, I get redirected… Apr 30, 2023 · I got a Windows update (or two or three) and hadn't noticed my USB com port not working. Below are the meanings of each number, possible causes, and a suggested course of Aug 3, 2015 · If you are using windows, go to device manager (with the arduino connected to the pc) and look at the serial port created for the arduino. Fix your Apple and Android devices—and buy all the parts and tools needed for your DIY repair projects. Do not turn the freon canister upside down when filling this port and the engine is running. We'll cover everything from checking your settings to reinstalling the drivers. Jun 30, 2022 · I need to manually configure my communications port because I have a code 34 error. A more likely cause would be a configuration on the POS software settings. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated. 4, AP7. May 13, 2025 · Port Already in Use: If another application is using COM1, you will not be able to open a new connection. ALSO LDP VENT VALVE NOT HOLDING VACUUM WILL SET A LEAK CODE. However I have a deeper problem with the COM PORT that needs attention. Most of the time this can be fixed simply by removing, cleaning, and reinstalling the sensor (checking the connections in the process). HAVE ALSO SEEN SPLIT HOSES NEAR EVAP SERVICE PORT Sep 24, 2017 · I'm getting a link error on my obd11 code reader. Get free expert DIY tips, handy support, troubleshooting help & repair advice for all Coast products. Missing: gamer, pdf Communityforums. Popular Epson questions, problems & fixes. 2、Why does the serial port connection failure？ The following are some possible causes of serial port loss: 2. Feb 26, 2025 · Hello Everyone, I am facing a COM port issue when connecting an FTDI/RS232 device via MobaXterm and Putty. This article applies to all of the USB v3 interfaces as well as the Log Box D v3. The email address entered is already associated to an account. We’ll cover everything from basic COM port identification to more advanced configurations, ensuring you have a comprehensive understanding of how to manage COM ports effectively. Windows Error #5 – Access is denied” or simular. This tutorial will guide you through the process of enabling COM ports on Windows 10 or 11 and using a Prolific PL2303 USB to Serial Cable. Surely everyone has restarted as required, but when clicking install, the message continues to appear. 4 days ago · Learn how to do anything with wikiHow, the world's most popular how-to website. Sep 8, 2014 · No light or equipment necessary Open the diagnostic data port, the one were the little pacman centre is located. Learn how to troubleshoot problems updating Windows. It will also teach you how to reset a forgotten Yahoopassword. First of all, you will want to go into Windows De Nov 21, 2010 · 文章浏览阅读10w+次，点赞12次，收藏62次。本文提供了解决COM端口被占用的方法，包括通过注册表编辑器删除ComDB项、检查调制解调器设置以及调整环境变量来删除未使用的虚拟COM端口。 Feb 16, 2024 · Ports (Com & LPT) is now visible in device manager displaying “Communications Port (COM 3) with a yellow error icon. However, with these changes, you might encounter some challenges when it comes to enabling the COM port, especially if you’re dealing with legacy hardware, certain peripherals, or specialized applications that rely on serial communication. Popular Canon PIXMA questions, problems & fixes. Get below error message: "Your company hasn't made any apps available to you on this Apr 1, 2025 · Following this and this posts, I'm trying to completely uninstall the com0com virtual serial port driver from my Windows 10 system that has Secure Boot enabled. Aug 23, 2019 · The following topics provide lists of error codes used by COM-based APIs. This is a very annoying error for everyone when installing Siemens TIA-Portal software. In the advanced properties you can assign a comport for the arduino. The USB serial devices often do not get cleared from the comport list indicate the comport is in use when it isn't. Feb 16, 2021 · why do i get error 5 when trying to connect to com port 1 and please i am a novice so i need you to answer in terms i can understand i am 76 years old many thanks Dec 19, 2023 · Due to some error, sometimes your operating system fails to enable power supply back to USB Controllers and that results in non-working USB Ports. We utilize an enrollment account to enroll the device into Intune/Entra, and once enrolled, we switch to a user account to use the device. Unable to open connection to COM1 Putty? Learn how to troubleshoot this common problem with our step-by-step guide. In Windows 10 or 11, enabling COM ports allows you to connect your device to a serial port and communicate with it using software applications. I fixed the problem by deleting the UpperFilters registry value for the serial port class per this LifeWire article. com Solved: Can't create App password - Rogers Community Dec 19, 2017 · 今天就遇到这个问题了串口调试的时候发现usb转串口使用的是COM8而串口调试助手里面只有COM1到4，我想去该COM口发现COM1到7都在使用中，找了好多办法都不行，后面在网上找到这篇解决办法的文章，就转载过来了，没有标明转载的地址有点不好啊，嘿嘿。 彻底解决COM端口被占用（在使用中）问题的办法 Aug 29, 2024 · How to Check COM Port in Windows 10 The following steps will show you how to find out which COM port is being used by your devices in Windows 10. Inspect the EVAP system for the following Aug 16, 2009 · 9 Shut the recharging kit's valve and remove the kit from the low side port, once the system has been successfully recharged. modems will usually be assinged com3 or 4 and thus Oct 26, 2022 · Summary A 500 Internal Server error means that the website you were trying to connect to has experienced a problem and can't provide a more specific error code. I also went to Device Manager to load Legacy drivers since Com / LPT ports was gone. Coffee questions, problems, & answers. GE Refrigerator Error Codes? FF, PF, ER, and more—find meanings, fixes, and expert tips. May 5, 2025 · Product troubleshooting support, DIY advice, and help from experts & local pros. Code c40 I believe a c40 is the trans port sucation fan. Jan 10, 2023 · The ERR_NAME_NOT_RESOLVED error message can be caused by poor internet connection or many other things. . You cannot fix a 500 Internal Server error, but you can usually view an archived copy of the website on the Wayback Machine. If you save it in a high resolution and size up the design before you try to digitize it you can Jan 9, 2025 · Description Unable to console to BIG-IP device. Inside left side above the fixing unit. Oct 19, 2022 · I've installed it, I've restarted Steam, I put the file in Source mods, and I still get the same game like I never installed the mod to begin with. Ask questions and get answers to fix, repair, and service any product. In this Microsoft Support is here to help you with Microsoft products. Restart the device. 4, AP5. It will not in most instances do an adequate job of digitizing lettering created in Word. Sep 27, 2020 · Usb COM port adaptors often increment port numbers when you change the adaptor or even just the USB port it is plugged into. It is going from a USB port of my computer to the Console port of the 3825. The simplification calculator allows you to take a simple or complex expression and simplify and reduce the expression to it's simplest form. Try these fixes to get rid of this error. Get advice and customer service in the Xbox Support community. These values are defined in the Winerror. Jul 20, 2009 · First, make sure the serial port exists. Make sure that the system is up to date. Apr 7, 2025 · Question: I received an error when trying to verify my identity. How do I fix this? Apr 10, 2024 · Learn how to easily check and manage COM ports in Windows 10 with our step-by-step guide. hows. Disable the serial port in Device Manager. Dec 26, 2024 · Hello, This may be a novice question, but I'm trying to install OpenWrt on a set of AP3825i access points. Port exhaustion occurs when all the ports on a machine are used. Aug 24, 2008 · THERE ARE SEVERAL EVAP HOSE LEAK SPOTS ON THESE VEHICLES. I need to check whether your car is using ODB or ODB2 port for the reader. t, and the 64-xx series. It is under the trans port belts. I've followed the instructions turning off the ignition for 10 seconds and turning it back on only to get the link error again. Get free expert DIY tips, handy support, troubleshooting help & repair advice for all Xante products. Observing an error similar to the following when attempting connection using PuTTY on a Windows client: Unable to open connection to COM8 Configuring serial port: Error 31: A device attached to the system is not functioning. Get free expert DIY tips, handy support, troubleshooting help & repair advice for all Mr. Get free expert DIY tips, handy support, troubleshooting help & repair advice for all Octane Fitness products. Jun 25, 2025 · Due to a variety of reasons, a Wii U may display an error screen with an error code. I successfully setup my device and I was able to setup Company Portal and MS Authenticator. But Windows can hold onto the ports. Mar 2, 2025 · This detailed guide will walk you through the methods to check COM ports in Windows 11, including using the Device Manager, Command Prompt, PowerShell, and third-party tools. View recent Xante questions, problems, & answers. Explore common COM port issues on Windows, diagnose with Serial Port Monitor, and find effective solutions quickly! These steps won’t help if Windows says you that the COM port you need is already in use. What should I have to do to resolve this issue? – said SAY014 in HP Forum So how to fix the problem and find back your Windows 10 COM ports? Please keep reading! Feb 26, 2020 · How to find COM port number on Windows 10? If the details of your COM ports are not visible in the Device Manager, open Device Manager and click on “Action” from the menu bar. Aug 8, 2025 · If you get an "Unable to open a connection to com1" message, you won't be able to use your serial port. Update COM Port drivers, 3. How do I enable serial port? SOLUTION Jan 11, 2022 · Three: COM PORT is disappeared in Device Manager. Apr 3, 2024 · View recent Swintec questions, problems, & answers. Jul 8, 2025 · 4. Shut down the Civic's air conditioning, turn the engine off, and remove your key from the Civic's ignition. steps on how to replace evap canister purge solenoid valve 2004 cadillac srx dont wnt to pay dealer 500 dollars in - Cadillac 2004 SRX question Oct 6, 2014 · The low side port of the 2005 GMC savanna Van is located on the low pressure side of the compressor. 9 single camshaft that we cannot see any marking of the timing gear? May 15, 2024 · Users can add COM ports or update motherboard drivers to restore missing COM ports with the Add legacy hardware option in Device Manager. Nov 13, 2008 · My cable box has error code E607 What does this mean? - Aprilia 2004 Scarabeo 200 question May 2, 2018 · View recent Octane Fitness questions, problems, & answers. Does Windows 11 handle COM ports differently than Windows 10? Aug 27, 2024 · Hello boffins, hope somebody can help me. 5L question Do you know where the knock sensor # 2 is located on a 2004 hummer h2? Feb 14, 2011 • Nov 22, 2010 • Jul 02, 2010 • Sep 25, 2008 • Apr 21, 2010 · The low-pressure service gauge port valve is located on the suction accumulator. This can be a big problem, and in today’s article we will show you how to solve it. If the comport you have seen on the list on CHIRP when you click on port in the CHIRP program, unplug the radio and click the comport listed in device manager, the box should say it is a FTDI manufactured device. Wrong COM Port: Attempting to connect to an incorrect port can lead to this error message. In your case you indicated that you have a Bluetooth USB dongle. Jun 11, 2014 · P1133 refers to the air/fuel ratio sensor bank 1 sensor1 (This is the first O2 sensor in the exhaust). May 15, 2024 · Users can add COM ports or update motherboard drivers to restore missing COM ports with the Add legacy hardware option in Device Manager. Aug 23, 2014 · How to determine the timing of the injection pump of the Korando 2. What is happening and what can I do next? Jan 14, 2019 · A serial port may be useful, but some users have reported that the serial port message cannot be opened on their PC. Recent 1958 Mercedes-Benz Mercedes Benz 220 Se 220se Coupe 1/18 Red questions, problems & answers. Apr 27, 2014 · where is the diagnostic port on a 2012 subaru legacy trying to plug in a OBD-II - Subaru 2012 Legacy 2. Here are 6 methods to fix it. Oct 22, 2020 · How do I fix COM port Access Denied? 5 Answers. Apr 11, 2025 · After updating Windows OS, some users find that their desktop COM ports have disappeared from Device Manager. Sep 18, 2013 · Tell us some more! Your answer needs to include more details to help people. Refer to Lifting and Jacking the Vehicle in General Information. htmlDisclaimer : This video how to fix com port error provides educational Q&A co Jun 19, 2024 · Hello, I recently rejoined a firm and I am having trouble signing into my Teams and Outlook with my work account. While most devices… Feb 20, 2024 · To fix The sync could not be initiated, try opening port 444 with a new firewall rule and unregistering the device from other organizations. the scaner kits will usualy tell you what vehicles and what adapter to use. Let’s delve into the intricacies of managing COM ports on Windows 10. Make sure you wear safety glasses and gloves when you work with this, as the freon absorbs huge amount of moisture and it will absorb quickly into your eyes if sprayed or spilled. UNDER VEHICLE BY EVAP CANISTER,UNDER AIR CLEANER. Solve issues fast Mar 26, 2003 · How do you install the modem? Are you using a setup program that came with the modem, or are you just using Window's "add new hardware" routine? If the latter that may explain your trouble. 6 days ago · On Windows 10 and 11, you can use these steps to fix a second monitor not detected on your PC, and here's how. Find expert solutions to common issues, DIY guides, repair tips & user manuals for all Epson products. If Com1 is not listed, you will need to enable it in the BIOS. Open the Yahoo website. Add COM Ports manually. COM port is not in use. A cat5e cable is going from LAN2 to the router. To achieve that follow this process: STEP 1 – Right Click on Windows button and Select Device Manager. the manual will tell you where the diagnostic port is exactly. Jul 27, 2016 · Here are the steps to troubleshoot if the programming software for your two way radio does not recognize the COM Port or the programming cable purchased from Buy Two Way Radios. What could be the reason and how do I fix it? HOW TO FIX COM PORT ERRORKnowledgeBase Tools: https://www. If you’re unsure what COM port your device uses, you can use the Windows Device Manager to help you identify it (If you’re unsure about what connection method your device uses to transmit data to your PC, you can see our video on Connection Methods here). May 20, 2024 · Struggling with driver errors on Windows 11? Our step-by-step troubleshooting guide will help you identify and fix these issues to keep your system running smoothly. Verify that the port isn’t open/disconnect the cable. Under “Ports (COM & LPT)” you will find your serial device titled “USB Serial Port” along with its current COM Port. These connect to the computer (or laptop) using a USB cable, the computer then detects these device as a COM Port which enables the WRT software to use serial communication to talk to the interface. So you can get back to using Putty in no time. could have 2 one under the steering wheelside of the dash and 1 under the hood. Jan 2, 2021 · Useful Brocade SAN Switch CLI commands Show Commands CommandDescriptionpsshowDisplays the status of the power supplyfansshowDisplays the status of the Mar 2, 2023 · I have installed a port sniffing tool and found that when the program sends an exclamation mark (!) the port will stop transmitting. Inspect the Evaporative Emission (EVAP) System for the following conditions: ?€¢ A loose, missing, or damaged service port schrader valve ?€¢ A loose, incorrect, missing, or damaged fuel fill cap ?€¢ A damaged EVAP canister purge solenoid valve Raise the vehicle on a hoist. Follow this guide to fix it fast. I get this message when i open Communications Ports Properties in Display Manager: 'Windows… Apr 21, 2025 · Struggling with 400 Bad Request errors? This ultimate guide provides step-by-step solutions to diagnose and fix HTTP 400 errors quickly and easily. Get free expert DIY tips, handy support, troubleshooting help & repair advice for all Swintec products. Free expert DIY tips, support, troubleshooting help & repair advice for all Portal Camping, Backpacking and Hiking products. Mar 8, 2013 · check the out put from the computer to the obd ll port if good need to check the wiring harness ,connections and pin contacts from computer to obd ll port connections possible short,frayed or broken wire. Mar 17, 2025 · Learn how to easily check COM ports in Windows 11 with our step-by-step guide, ensuring smooth connectivity for your devices and applications. Mar 31, 2016 · Just like we can check COM ports in windows 7 or lower , by going to Control Panel >> Device Manager >> Ports How should we check it in Windows 10? When I try to to open a COM port in Docklight, I receive an error message “The communication port COMxxx could not be opened. Page 2 Popular Canon PIXMA questions, problems & fixes. Here's how to set them free. How do I enable Arduino ports in Windows 10? Install Arduino driver on Windows On your Apr 8, 2025 · Want to see your COM port on Windows 10? Learn how to find your ports in the Device Manager and the Command Prompt, and to check for connected devices. See pictures below: On the new Volkswagen Passat B5 (after MY 2001) the Data Link Connector (DLC) or diagnostic port is placed on the panel above pedals. Right click on “USB Serial Port” and click on Properties. Being i 2002 model im guess ODB, but have a look online. Turn the ignition to position 2, don’t start. Perfect for troubleshooting serial connections! iFixit is a global community of people helping each other repair things. Apr 17, 2024 · A few users report that they can't install our apps from the company portal. I have a USB to console cord, cheap one with a ch340 chip. Get free expert DIY tips, handy support, troubleshooting help & repair advice for all OCE products. Module Configuration: Slot/module configuration in TIA Portal must match the physical device. How do I edit my question? How do I move my question to a different category? How do I delete my question? I solved my own question, how do I share the solution on Fixya? Creating a Fixya account: How do I sign up for Fixya? How do I sign in to my Fixya account? May 2, 2019 · Siemens question: If communication between HMI and PLC fails, how can I detect that in the HMI for multiple connections? Thanks Pavol Sep 17, 2024 · I am experiencing installation issues with Company Portal on some devices in my environment. May 28, 2025 · How do I request a name change on my FMCSA Registration (USDOT Number and/or Operating Authority)? If I change the name of my company, will my Docket (MC, FF, MX) number remain the same and will I be issued a new certificate or permit? Is an entity required to file a biennial update if there is no change to its information? Jan 15, 2025 · Learn how to troubleshoot port exhaustion issues. This wikiHow teaches you how to change a Yahooemail account password. h header file. Now that you said that it is a USB display, what was getting you the com port 3 error, was it a message from windows or was it within the POS application. You can disable power management to stop Windows from cutting power supply to the USB Controllers. This is found by locating the compressor driven by a belt that has a clutch that engages and disengages as the a/c cycles. obd1 1995 and older obd2 1996 and newer. When I opened device manager at that time I found that, portable devices COM port option disappeared from device manager. However, there are no USB restrictions, and the proper drivers have been installed. Troubleshoot with experts in the Answers forum—and build your own how-to guides to share with the world. Im trying to do an update on my drone via my pc. This article outlines steps to restore the missing ports. Check the Device Manager; right-click on My Computer, select "Manage" from the context menu, select "Device Manager", expand "Ports Com & LPT". Can… Mar 13, 2025 · View recent OCE questions, problems, & answers. Properties displays the message “This device cannot start. I get an error message when I try to use the COM Mapping function in NPort Administrator. Free expert DIY tips, support, troubleshooting help & repair advice for all Cars & Trucks. SMALL BLACK VALVE WITH A HOSE ON EACH END WITH A SMALL VACUUM HOSE ON TOP. Easy, well-researched, and trustworthy instructions for everything you want to know. Access to COM1 is exclusive; only one program can have it open at a time. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more. Discover how to get anywhere by searching plane, train, bus, car and ferry routes Xbox Support offers help for Xbox, Game Pass, and billing questions. Coffee products. The calculator works for both numbers and expressions containing variables. This issue is occurring on both Windows 10 and Windows 11. Hardware Configuration Device Type & Order: In TIA Portal’s project tree, ensure the configured device matches the actual hardware (correct order number and firmware version). Download Configuration: Download the hardware configuration to the PLC and all PROFINET devices. Do alot of work on cars, except i dont have much experience with automatic transmission car's as we don't drive them much in Europe, we want pure performance :) Feb 6, 2015 · Mitsubishi Lancer Cedia 2001 giving Code 54 ELC RLY OPEN, how do i sort it out? My Mitsubishi lancer Cedia 2001 4g93 car had the gearbox changed and now the neutral light blinks when you engage the forward or reverse gear. May 31, 2023 · Below, we will describe these problems in detail and provide the corresponding solutions. Solve common USB problems on Windows with easy troubleshooting This tutorial is compatible with the SINGER® FUTURA™ CE-100, CE-200, CE-150, CE-250, CE-350, SES1000 and SES2000 sewing and embroidery machines. the code indicates that the circuit is either open, shorted, or has a poor connection. forklifts, boats, excavators etc Jul 28, 2017 · At Fixya. Did you try to reset the code? The Trouble rest botton is behind the display pannel control for brightness. Jun 20, 2023 · Here's what Intel says about this error in general (though it doesn't specifically mention COM ports): Error Code 45 on Device Manager for Intel® Bluetooth® or ZenRows® Scraping Browser works seamlessly with your existing Puppeteer or Playwright code — just one line of code is needed to integrate, making it ideal for developers looking for fast and easy solutions. Sep 30, 2023 · Would it really be Windows if it didn't give you an obscure error code every once in a while? Apr 29, 2024 · Fix the Printer Error 0x00000709 on Windows PC by uninstalling the latest cumulative update or by tweaking the PointAndPrint registry entry. Enable Show Hidden Drivers, 2. Jun 9, 2025 · Fix the Missing COM port issue on Windows with these 3 fixes - 1. Reset COM Port in Use on Windows If the device is not currently connected to the computer, you can reset its assigned COM port number. As Pylsa mentions you will need to show and verify the the correct port is being used. Rogers. View recent Mr. 5i Sedan 2. This problem is not found in windows 8. 1 Incorrect serial port settings You need to make sure that the serial port settings match your device. The questions and answers in this section apply specifically to the following Avery-Dennison printer models: AP4. In this case, try to manually reset the used COM port and then reassign it to a new device. Struggling with the 'Serial Port Not Found' error in Arduino? Discover proven, step-by-step solutions to fix this issue fast and get your projects How to Enable COM Port in Windows 11 Windows 11 has introduced a sleek, modern interface and numerous improvements over its predecessors. Aug 21, 2018 · At Fixya. The high-pressure service gauge port valve is located on the LH top of the condenser core. Find answers to common questions and issues installing Windows updates. IT SHOULD HOLD VACUUM WITH HAND HELD VACUUM PUMP. the error I get is: “Unable to open connection to COM3 Unable to open serial port”. You can't post answers that contain an email address. dpn sorsbw hblo zsecpf bhu soanc fpha wuosijb atax cyqwog