A JSHVAC service
HVAC Brain
Fault diagnosis and error code lookup for techs on the tools. Built by someone who's up the ladder too.
The problem
You're on a roof, the unit's throwing a code, and you're scrolling a 90-page PDF on a cracked phone screen in the sun. Or the code isn't in the manual you can find, because the manual you can find is for the wrong revision.
HVAC Brain is the two things you actually reach for, made fast.
Diagnose
Symptoms in, likely causes out — ordered by what it usually is.
- Describe the symptom in plain words — no rigid form to fight
- Ranked likely causes, most common first
- What to check, and in what order, to rule each one out
- Typical parts and rough cost so you can talk to the customer on the spot
- Safety call-outs where a fault means stop and isolate
Built around the faults that actually turn up on NSW jobs — not a generic textbook fault tree.
Error Codes
Manufacturer fault codes, looked up in seconds.
- Search by brand and code, or just paste what's on the display
- What the code means in plain English
- The usual cause, and the next thing to test
- Covers the brands that turn up most on Australian sites
If a code isn't covered yet, flag it — the coverage grows off real jobs.
Who it's for
- Refrigeration and air conditioning techs
- Apprentices who don't yet have twenty years of pattern recognition
- Sole traders without a senior tech to phone
- Maintenance staff who look after their own plant
HVAC Brain is a reference tool to speed up diagnosis. It doesn't replace your licence, your training, or your own eyes on the job — you're still the tech.
Register InterestReady to get your AC sorted?
Get a free quote or book a service — licenced local tech, honest pricing.
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