Hands-On Learning, Powering America Forward

Diagnosing and Replacing Time Delay 

 

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CONTENT TYPE

VR, ILV, Interactive Modules

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DURATION

3 Hours

Target Audience icon

TARGET AUDIENCE

Technician

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COURSE DELIVERY

VR and Web-based

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Credits : 0.4

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About the Course:

This Diagnosing and Replacing Time Delay microcredential trains HVAC technicians to safely diagnose, remove, and replace faulty time delay relays in HVAC systems. Learners practice real-world troubleshooting steps including continuity testing, safe disconnect removal, wire disconnection, and secure component replacement using a multimeter and hand tools. The course emphasizes electrical safety, accurate diagnosis, and verification procedures to ensure reliable system timing and performance. Technicians can expand their diagnostic expertise through our Advanced HVAC Skills Training Program focused on troubleshooting and system performance.

Learning Objectives:

  • Identify symptoms of a faulty time delay relay, including failed continuity signals.

  • Safely power down equipment using proper disconnect procedures.

  • Use a multimeter to test continuity and confirm relay failure.

  • Remove faulty time delay components using correct tools and safety protocols.

  • Install and secure a compatible replacement time delay relay.

  • Reconnect wiring according to proper configuration.

  • Restore power and verify correct time delay operation through testing.

 

Course delivered via LMS and requires an Oculus VR headset for hands-on VR simulations.

 

HVAC technician diagnosing a time delay relay using a multimeter during electrical troubleshooting.

 

Workforce Development

HVAC technician performing control circuit diagnostics and component testing in training.

At ImmerseLearn, we equip HVAC technicians with hands-on, job-ready skills for diagnosing and servicing electrical control components. This microcredential strengthens electrical troubleshooting accuracy, safe servicing procedures, and component replacement precision through immersive VR practice. 

How this course strengthens workforce skills:

Time Delay Diagnostics −
Learners begin by activating the multimeter and performing a continuity test on the time delay relay. When no audible beep is detected during testing, technicians confirm the relay is faulty. This structured diagnostic approach prevents unnecessary part replacements and ensures accurate fault identification.
Safe Shutdown and Component Removal +
Technicians practice removing the disconnect, lifting equipment panels, safely disconnecting wiring, and loosening mounting screws. Emphasis is placed on proper sequencing to eliminate electrical hazards and prevent equipment damage.
Cause Identification +
Participants evaluate common causes of time delay failure, such as electrical wear, contact deterioration, overheating, or voltage irregularities. Understanding these factors improves long-term system reliability and preventive maintenance decisions.
Replacement and Verification +
Learners install a compatible time delay relay, secure mounting screws, reconnect wiring, and restore the disconnect. A final continuity test is performed using the multimeter. When the audible beep confirms proper function, technicians verify safe and successful system operation.

By completing this microcredential, HVAC technicians build the confidence and technical skills required to diagnose time delay failures, replace components safely, and restore reliable HVAC system performance in real-world service environments. If you are just starting out in HVAC, foundational training is also available for early-stage learners through our HVAC Associate Training Program.

For more advanced field-focused learning, you can explore our HVAC Technician Training course.