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About this course

This is the practical residential solar O&M course you have been waiting for!

With the residential solar market continuing to grow exponentially, so does the need for system maintenance. Now more than ever, the solar industry needs qualified, experienced, and knowledgeable service technicians to maintain the reliability of deployed solar assets.

In this course, students will learn the basics of O&M, safety precautions, service site visit best practices, preventative maintenance measures, with a primary focus on field troubleshooting where instructor Keith Rohman walks through real-world residential solar O&M issues and their solutions. Keith walks students through his process to address each corrective maintenance challenge, providing a framework for students to work through when solving issues on their own jobsites.

This is an advanced course. It is recommended that students have previous experience in safely installing residential solar systems prior to enrolling.

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Course outline

5 modules • 63 assignments • 6:51 hours of video lectures

Welcome • 7 assignments
Orientation Materials

This course is self-paced, so you don’t need to be logged in at any specific time. You can get started immediately after you enroll and the course materials will remain in your account with minimum guaranteed access for 12 months (1 year) after enrollment.

  • Set up email notifications and your student profile
  • Meet Keith - Your Instructor for the Course (03:02 minutes)
  • Keith's Solar Career Journey (05:55 minutes)
  • Meet Brit - Supporting Instructor for the Course (01:11 minutes)
  • Introduce yourself on the discussion board
  • Intro to O&M (11:20 minutes)
  • Safety Basics (15:52 minutes)
Module 1 • 8 assignments

  • Introduction to Commissioning (06:51 minutes)
  • Free Access to NEC and NFPA 70E
  • Mechanical and Electrical Inspections (09:29 minutes)
  • Mechanical and Electrical Testing (15:32 minutes)
  • System Start Up & Witness Testing (09:20 minutes)
  • Monitoring & Communcations (05:40 minutes)
  • Project Wrap Up (08:17 minutes)
  • Solar United Neighbors - Solar Owner's Manual
Module 2 • 3 assignments
Preventative Maintenance

  • Preventive Maintenance Basics (23:38 minutes)
  • System Health Checks, P.M. Scopes, and Write-ups (10:49 minutes)
  • Thermal Imaging - A Sweet Tool in P.M. (03:30 minutes)
Module 3 • 36 assignments
Reactive Maintenance - Field O&M

  • Intro to Reactive Maintenance (02:06 minutes)
  • Critter Concerns (08:20 minutes)
  • Water Intrusion From Improper Conduit Fittings (14:55 minutes)
  • NEMA Bulletin (.pdf)
  • Junction Box Failures - Field Case Study 1 (14:43 minutes)
  • Inverter Troubleshoot - Blown Fuse (11:45 minutes)
  • Testing a Fuse From an AC Disconnect (03:41 minutes)
  • Inverter Troubleshoot - Thermal Event (16:13 minutes)
  • Intro: Ground Faults and Isolation Faults (06:02 minutes)
  • Iso Fault Field Example 1 (Technical Methodology) (08:02 minutes)
  • Iso Fault Field Example 1 (Locating and Repairing the Fault) (04:14 minutes)
  • Iso Fault Field Example 2 (05:47 minutes)
  • Intro To Communications (02:11 minutes)
  • Communications Troubleshoot Example 1 (04:22 minutes) Preview
  • Communications Troubleshoot Example 2 (03:42 minutes)
  • Enphase Technical Brief - Extenders (.pdf)
  • Communications Troubleshoot Example 3 (07:54 minutes)
  • Intro to Module Level Power Electronics (MLPEs) (07:43 minutes)
  • MLPE Service - Field Example 1 (13:05 minutes)
  • Broken and Damaged Modules (09:57 minutes)
  • Introduction To Roof Leaks (06:42 minutes)
  • Roof Leak Example 1 (05:50 minutes)
  • Roof Leak Example 2 (06:47 minutes)
  • Bad Breaker - Example 1 (08:58 minutes)
  • Testing a Breaker (03:09 minutes)
  • Bad Breaker - Example 2 (12:25 minutes)
  • Bad Breaker - Example 3 (03:43 minutes)
  • Incorrect Production or Consumption Readings – A Deep Dive into CTs (29:26 minutes)
  • Introduction to MC4 Connections (03:43 minutes)
  • MC4 Field Issues - Improperly Seated Connections (03:40 minutes)
  • MC4 Field Issues - Improper Water Sealing and Crimping (05:02 minutes)
  • MC4 Field Issues - Mating of Incompatible Connectors (04:49 minutes)
  • Solar Power World on Incompatible Connectors
  • MC4 Process - Part 1 (07:06 minutes)
  • MC4 Process - Part 2 (06:33 minutes)
  • Optional Discussion Board Post: Share one of your O&M service challenges
Module 4 • 3 assignments
Working with Equipment Manufacturers

  • Remote Diagnostics (11:51 minutes)
  • Importance of Working Equipment Manufacturers (04:02 minutes)
  • Energy Storage Manufacturer Installation Training Programs (.pdf)
Module 5 • 2 assignments
O&M Considerations

  • Important O&M Considerations (07:18 minutes)
  • Taking the NABCEP PV Commissioning and Maintenance Specialist Exam (05:04 minutes)
Conclusion • 4 assignments
Feedback and Additional Resources

This is our last module but you still have access to the all of course materials for 12 months (1 year), so keep working and you'll be able to complete the course at your own pace. After your year of access expires you can optionally extend access with a HeatSpring Membership. Enjoy the course and keep in touch!

  • 1 Year of Access to Course Materials
  • Feedback: 2-minute Exit Survey
  • Consider Joining as a HeatSpring Member
  • Certificate of Completion: Request a Certificate

Continuing Education Units

Approved for the following CEUs

  • NABCEP RE Elective
  • NABCEP Advanced Credit Hours

Approved NABCEP CEU Hours

NABCEP Credential Advanced Hours for Exam Recertification CEU Hours NEC JTA RE Elective Building or Fire Code
6.5 6.5 0 6.5 6.5 0
0 6.5 0 0 0 0
0 6.5 0 0 6.5 0
0 6.5 0 0 6.5 0
6.5 6.5 0 6.5 6.5 0
6.5 6.5 0 6.5 6.5 0

NABCEP Registered Provider

This course counts towards the training requirements for taking NABCEP professional certification exams and CEUs for renewing all certifications.


  • Keith Rohman

    Electrician and Solar Technician
    View profile

    Keith got his start in the solar industry in 2017 with an entry-level solar installer position in Denver, Colorado. Previously, Keith obtained his bachelor’s degree from Illinois State University in Renewable Energy. For him, solar energy was a clear and holistic answer to tackle the problems of climate change and challenges people face gaining entry into the... Learn more

Frequently asked questions

How does this course work?
You can begin this online course instantly upon enrollment. This 5 module course is delivered entirely online. This course is self-paced and you can set your own schedule to complete the materials. You can begin the lecture videos and other course materials as soon as you enroll. During your year of access the instructor will be in the course answering questions on the discussion board every Friday. After successfully completing the course, you will be able to generate a certificate of completion.
How long do I have access to the materials?
Students get unlimited access to the course materials as soon as they enroll and for one year (365 days) after enrollment. Rewatch videos and review assignments as many times as you want. View updates the instructor makes to the course as the industry advances. Return to your course anytime with online access from anywhere in the world. After the one year of access expires, access can be extended by joining as a HeatSpring member. A single membership extends access to course materials for all past enrollments.
Is there a certificate of completion?
Yes, when you complete this course you are eligible for a certificate of completion from HeatSpring. You can download your certificate as soon as you have completed all of the course requirements. Students can easily share their verified certificates on their LinkedIn profiles using our LinkedIn integration.
Can I register multiple people?
Yes please visit our HeatSpring for Teams page to get a group discount.


Based on 18 reviews
students have taken this course

This was a great course for delving into the nitty gritty of maintenance. The explanations and demonstrations were very specific and clear, and it showed how issues that would not be obvious at installation, can cause problems as time goes on.

Steph Alarcon

Great class for those moving into residential O&M.

Jason Bone
PV Instructor, Halifax Community College
Taylor B

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