# Electrical Troubleshooting MS — Are you a good troubleshooter? > Virtual electrical circuit troubleshooting simulator with voltmeter and PLC logic. (iPhone/iPad app by David White.) - Source: https://appshunter.io/ios/app/electrical-troubleshooting-ms/id1562565451 (this page in markdown: same URL + `.md`) - Developer: [David White](https://appshunter.io/developer/911163945) - Category: Education - Price: Free - Rating: 4.74/5 from 62 App Store ratings · 14 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 19 MB - Languages: English - Released: 2021-04-13 - Data updated: 2026-08-21 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/electrical-troubleshooting-ms/id1562565451/reviews.md ## What is Electrical Troubleshooting MS? Totally FREE! No ads or pop-ups! How this App Works: This app has 17 different electrical problems that are randomly selected to provide a fun and challenging learning experience. It is certain to help you become more proficient in troubleshooting with a voltmeter. The motor starter is animated so that you can SEE the different contact configurations between forward and reverse. Another unique feature of this app is the ability to instantly switch back and forth between the control schematic and the real time PLC logic. There is also a "Troubleshooting Assistant" to help test the control circuit and find the problems. The app is initially in normal mode. This allows you to experience: - How a reversing starter works. - How to use the virtual voltmeter probes to measure voltages at various test points (small black squares, which turn red when the voltmeter makes contact with them) in the control circuit. - Analyze the PLC logic, when the starter is in various control modes Run (FWD & Rev), Off and Auto (FWD & REV). The HMI only has control in Auto. The selector switches work as indicated by control circuit. After the you understand how the motor starter works in the various control modes, you can check your troubleshooting skills by going to "Settings" (touch the 'More' button (at the top of the app) and then the gear icon) and selecting troubleshooting mode. Touch the "Arrow Back" icon to return to the control schematic. You will notice that the screen background has turned a light green, indicating that it is in troubleshooting mode and has a problem that needs to be found. Use the "Troubleshooting assistant" at the top, right side of the control schematic to help set the operator switches for testing. Use the voltmeter probes and PLC logic screen to identify the problem. Once you believe that you have identified the problem, touch "Problem Identified" button at the top of the app. A list of possible problems will appear. If you cannot determine the problem, at the bottom of the list, there is an item to provide the answer. If you desire to put the control system back in to normal (Non Troubleshooting Mode - No electrical problems) to learn more about how it is suppose to work, go to the settings section and unselect "Troubleshooting Mode". It is truly a great learning tool for anybody that wants to be able to fully utilize a voltmeter to troubleshoot a control circuit. ## Key features - 17 random electrical problems - Virtual voltmeter with probes - Animated motor starter - Switch between schematic and PLC logic - Troubleshooting Assistant - Normal and troubleshooting modes ## Recent user reviews (10 of 14) All indexed reviews: https://appshunter.io/ios/app/electrical-troubleshooting-ms/id1562565451/reviews.md ### 5/5 — Great Learning tool *2026-02-15, version 3.5* As someone trying to get into controls, I have learned an immense amount from how real circuits operate. From not understanding the problem to now able to get some of the issues right on the first try. This has been excellent app for developing skills. Thank you ### 5/5 — Rico Vudu Remote *2026-02-05, version 3.5* Support Rico Remote ### 5/5 — Excellent app *2026-01-12, version 3.5* Great app to understand trouble shooting techniques for motor starters ### 5/5 — Pretty great tool *2025-04-20, version 3.4* It takes a minute to get the hang of everything and how you operate but once you get it it’s an excellent tool to look at troubleshooting. I’m a 3rd year and this has helped me a lot in understanding not only motor controls but relays…anything with NO/NC contacts ### 4/5 — Jd *2025-03-09, version 3.4* Not bad at all. Need more tasks, drawings and such. Great job ### 5/5 — Warms me up *2024-12-16, version 3.3* In the mornings I sit in my van at work through some problems before I have to work on a powder coating unit, paint booth, or industrial oven it gets all my mental programs booted up so I can navigate through boat loads of relays and wires. Of course I’m gonna give you 5 stars because Jesus is my Lord and savior as well. As for me and my house we will serve the Lord. -Joshua 24:15 ### 2/5 — Not bad but Not great *2024-09-26, version 2.8* Wish there was more than just one basic forward reverse station. Wasn’t challenging at all for me. Finished all the problems in less than an hour. ### 5/5 — Green lights *2023-09-30, version 2.8* Very good app. My question is some of the green lights are in opposite. For example HMI stop should be dark until stop button is pressed then turn green. Correct me if I'm wrong. I'm still learning. Thank you ### 5/5 — Very helpful *2023-09-05, version 2.8* Love the app it definitely helped with trouble shooting. “Side note” the guy that is complaining about the prayer is probably an employers worst nightmare. 👍👍 ### 5/5 — Not bad *2023-04-08, version 2.8* Awesome learning tool. Wish there were things like hints, as well as explanations for answers but other than that it’s been great. ## Frequently asked questions about Electrical Troubleshooting MS ### What is Electrical Troubleshooting MS? Electrical Troubleshooting MS is a free educational app designed to help users learn and practice electrical circuit troubleshooting using a virtual voltmeter and PLC logic. It presents 17 different electrical problems for a challenging learning experience. ### How does Electrical Troubleshooting MS work? The app allows users to experience how a reversing starter works, use virtual voltmeter probes to measure voltages, and analyze PLC logic. Users can switch between normal mode to learn and troubleshooting mode to identify problems. ### Can I use Electrical Troubleshooting MS offline? The provided data does not specify offline functionality. However, as it is a simulation-based app, it is likely designed to be used without a constant internet connection once downloaded. ### What devices support Electrical Troubleshooting MS? Electrical Troubleshooting MS is available for iPhone, iPad, and iPod. It is rated for ages 4 and up. ### How often is Electrical Troubleshooting MS updated? The app was last updated on June 29, 2025, indicating active development and support. The latest version is 3.5. ### What is the learning methodology of Electrical Troubleshooting MS? The app employs a hands-on learning methodology by simulating real-world electrical troubleshooting scenarios. Users learn by actively using a virtual voltmeter and analyzing PLC logic to diagnose and solve problems. ### Does Electrical Troubleshooting MS offer progress tracking? While the app provides a challenging learning experience and allows users to identify problems, specific progress tracking features are not detailed in the description. Users can track their own improvement through repeated practice. ### Is Electrical Troubleshooting MS suitable for beginners? Yes, Electrical Troubleshooting MS is designed as a learning tool for anyone wanting to become more proficient in troubleshooting with a voltmeter. The 'Troubleshooting Assistant' and the ability to switch back to normal mode to learn make it accessible for beginners. ## Version history (last 5 releases) ### 3.5 — 2025-06-29 Improved graphics. ### 3.4 — 2024-12-19 - Fully animated electrical schematic. - Fully compatible with later iPhones. - Improved help features. - Guaranteed to be a fun learning experience. - Supports iOS 13 through 17 ### 3.3 — 2024-12-03 - Fully animated electrical schematic. - Fully compatible with later iPhones. - Improved help features. - Guaranteed to be a fun learning experience. - Supports iOS 13 through 17 ### 3.1 — 2024-11-25 - Fully animated electrical schematic. - Fully compatible with later iPhones. - Improved help features. - Guaranteed to be fun and challenging. - Supports iOS 13 through 17 ### 3.0 — 2024-11-23 - Fully animated electrical schematic. - Fully compatible with later iPhones. - Improved help features. - Guaranteed to be fun and challenging. ## Apps similar to Electrical Troubleshooting MS | App | Rating | Price | Category | | --- | --- | --- | --- | | [HVAC School](https://appshunter.io/ios/app/hvac-school/id1436085954) | 4.8 (81) | Free | Education | | [Electrical Wiring Simulator](https://appshunter.io/ios/app/electrical-wiring-simulator/id1638500625) | 4.7 (190) | Free | Education | | [PLC AI: PLC Ladder Simulator](https://appshunter.io/ios/app/plc-ai-plc-ladder-simulator/id6476665383) | 4.5 (75) | Free | Education | | [HVAC Know It All](https://appshunter.io/ios/app/hvac-know-it-all/id1548260016) | 4.8 (221) | Free | Education | | [EE ToolKit](https://appshunter.io/ios/app/ee-toolkit/id391792609) | 4.7 (1,397) | Free | Education | | [NEC Electrical Exam by Dakota](https://appshunter.io/ios/app/nec-electrical-exam-by-dakota/id1673601265) | 4.7 (438) | Free | Education | ## More apps by David White - [Aprenda Libros de la Biblia](https://appshunter.io/ios/app/aprenda-libros-de-la-biblia/id1158142989) - [Learn Bible Books, Bible Fun](https://appshunter.io/ios/app/learn-bible-books-bible-fun/id1161258304) - [Prescription Reminder, Refils](https://appshunter.io/ios/app/prescription-reminder-refils/id1200305906) - [Simple Circuit Builder](https://appshunter.io/ios/app/simple-circuit-builder/id1294616098) - [PLC Simulator, PLC Trainer](https://appshunter.io/ios/app/plc-simulator-plc-trainer/id1326500777) - [Electrical Troubleshooter](https://appshunter.io/ios/app/electrical-troubleshooter/id1345925300) All apps by David White: https://appshunter.io/developer/911163945 ## Related topics [troubleshooting](https://appshunter.io/ios/topics/troubleshooting) · [electrical schematic](https://appshunter.io/ios/topics/electrical-schematic) · [electrical troubleshooting ms](https://appshunter.io/ios/topics/electrical-troubleshooting-ms) · [electrical troubleshooting](https://appshunter.io/ios/topics/electrical-troubleshooting) · [schematics](https://appshunter.io/ios/topics/schematics) · [electric game](https://appshunter.io/ios/topics/electric-game) · [electrical games](https://appshunter.io/ios/topics/electrical-games) · [hvac games](https://appshunter.io/ios/topics/hvac-games) · [schematic electric](https://appshunter.io/ios/topics/schematic-electric) · [electrician simulator game](https://appshunter.io/ios/topics/electrician-simulator-game) · [pmag app](https://appshunter.io/ios/topics/pmag-app) · [plc ladder logic](https://appshunter.io/ios/topics/plc-ladder-logic) · [multimeter simulator](https://appshunter.io/ios/topics/multimeter-simulator) · [hvac game](https://appshunter.io/ios/topics/hvac-game) · [electricity game](https://appshunter.io/ios/topics/electricity-game) · [voltex electrical](https://appshunter.io/ios/topics/voltex-electrical) · [mechatronic](https://appshunter.io/ios/topics/mechatronic) · [plc trainer](https://appshunter.io/ios/topics/plc-trainer) · [electrical engineering game](https://appshunter.io/ios/topics/electrical-engineering-game) · [multimeter](https://appshunter.io/ios/topics/multimeter) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*