Paperback - Inverter Mini Split Operation and Service Procedures
Written in the order you do the job
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Inverter Mini Split Operation and Service Procedures by Craig Migliaccio, in paperback. Ductless systems do not behave like a single speed condenser, and the numbers you trust on a ducted split will walk you into the wrong diagnosis. This covers how inverter units actually operate, and how to commission and service them. Free shipping in the USA.
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If the book is not what you needed, tell us within 30 days for a refund. The terms are on the refund policy page.
Written by a licensed HVACR instructor
Craig Migliaccio holds an HVACR Master License and is licensed by the State of New Jersey to teach HVACR, Sheet Metal and Building Maintenance.
A variable speed compressor moves the target. Superheat and subcooling readings that would tell you something definite on a fixed speed system shift with whatever the inverter has decided to do at that moment, and techs who charge a mini split the way they charge a condenser end up chasing a fault that is not there.
This book starts with how the system operates, then works through installation, commissioning and diagnostics on that basis. It is the ductless half of the AC Service Tech range; the air conditioning manual covers ducted systems.
The procedures covered include:
- How inverter and variable speed operation changes what your readings mean
- Line set work, including flaring and the mistakes that leak later
- Pressure testing, evacuation and the vacuum procedure on a ductless system
- Commissioning and start-up, step by step
- Charge adjustment for line set length
- Reading error codes and board indications, and what to check next
- Diagnostic sequences for the faults that actually come in on service calls
Free shipping within the USA. Orders normally leave within one to two business days. Returns are accepted within 30 days in resalable condition; see the refund policy page for the full terms.
The system you are getting called out to more every year.
Ductless went from a specialty to a standard install, and a lot of techs learned it on the job from whatever the last guy did. This is the book for filling that in properly: operation first, then the procedures that follow from it.
See what is in the bookCommissioning is where the callbacks come from.
A bad flare, a short vacuum or a charge never corrected for line length will all run on handover and fail in August. The installation and commissioning sections are written as a sequence you can follow on site so the unit you leave behind stays left behind.
Read the charging proceduresDiagnostics that start with the reading in front of you.
Craig has over 16 years in the field and runs an HVAC contracting business, so the troubleshooting works the way a service call works: here is the symptom, here is what to measure, here is what the number rules out. Keep it next to the P/T Chart and the HVAC calculators.
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Questions before you order
Is this different from the air conditioning book?
Yes. That one covers refrigerant charging and service on ducted air conditioning systems. This one is about inverter mini splits, which operate differently and are diagnosed differently. Techs who work on both usually want both.
Who wrote it?
Craig Migliaccio, owner of AC Service Tech LLC. He holds an HVACR Master License in New Jersey, is licensed by the state to teach HVACR, Sheet Metal and Building Maintenance, has over 16 years in the field and owns an HVAC contracting business.
Is this the paperback or the ebook?
This listing is the printed paperback, shipped to you. The same title is also sold as a digital download on its own listing.
Does the workbook come with it?
No. The companion mini split workbook is a separate listing.
Is it brand specific?
It is written around how inverter mini split systems work rather than around one manufacturer, so it applies across brands. Always use the manufacturer literature for a specific model's figures.
How fast does it ship, and what if I need to return it?
Orders normally leave within one to two business days with free shipping inside the USA. If it is not what you needed, tell us within 30 days for a refund; the full terms are on the refund policy page.
Still have a question? Email info@acservicetech.com and a person will answer.