A new HVACR Service and Troubleshooting book from renowned HVACR professor at Ferris State University is now available as a free digital download.

John Tomczyk has been a professor at Ferris State University for 24 years.  He has authored technical articles for Engineered Systems and writes a monthly column for Air Conditioning, Heating, and Refrigeration News. Tomczyk has published numerous HVAC publications including ‘Troubleshooting and Servicing Modern Air Conditioning and Refrigeration Systems’ and ‘Refrigerant Transition and Recovery Certification Program Manual for HVACR Technicians.’

The 48-page eBook called ‘HVACR Service + Troubleshooting with The Professor’ covers a wide range of service and troubleshooting topics including:

• system check sheets
• bad compressor valves
• loss of air conditioning cooling
• condenser splitting
• frost on the compressor’s head
• restricted TXV metering device
• leak detection methods
• refrigerant migration

The new eBook, which is a $10 value, is being offered for free download.

Available in three formats — PDF, digital edition, and iPad version — the eBook can be downloaded at www.achrnews.com/NEWSebook.