Get to the right diagnosis faster.
Describe the fault. Get step-by-step guidance backed by manufacturer docs. On your phone, on site, in seconds.
Diagnose Fault
AI-assisted fault diagnosis with search-grounded guidance.
Vaillant ecoTEC Plus
Sound familiar?
Every engineer has been here. Staring at a fault code, wishing the answer was in one place.
Hours lost to guesswork
Unfamiliar fault code on an unfamiliar boiler. You search forums, call tech support, and burn through the day.
Scattered information
The right answer is buried across five PDFs, three forums, and a manual you left in the van.
No record of what you tried
You diagnose the fault, fix it, then write up the service record from memory. Details get lost.
From fault code to fix. In one conversation.
Watch how AI Diagnostics guides you through a real Vaillant F1 fault, step by step.
Press Enter to send, Shift+Enter for new line
Grounded in manufacturer docs
Every answer cites real sources. Tap to read the original documentation.
Plain English, step by step
Describe symptoms in your own words. The AI asks follow-ups to narrow down the fault.
Log Repair writes your service record
One tap captures the diagnosis, parts, and work done. No re-typing.
What you get.
AI Diagnostics is built for the job, not the office.
Manufacturer-backed answers
Every response is grounded in real documentation. No guesswork, no forum hearsay.
Source citations on every answer
See exactly where each recommendation comes from. Tap to read the original document.
One-tap service logging
Hit Log Repair and the service record writes itself from your conversation.
View previous sessions
Every diagnostic conversation is saved. Review past sessions or pick up where you left off.
Safety guardrails built in
Gas leak? CO concerns? The AI flags safety issues immediately with the right procedure.
Built for site visits
Runs on your phone, no app to install. Designed for one-handed use on site.
Engineers on AI Diagnostics
"Had a Vaillant F75 I'd never seen before. Got the diagnosis in two minutes flat. Saved me a call to tech support and an hour of Googling."
Mark Stevens
Solo Gas Engineer, Bristol
"The citations are what sold me. I can show the customer exactly where the recommendation comes from. Makes you look proper professional."
Lisa Chen
Heating Engineer, London
"Used it three times last week. The Log Repair button is brilliant — fills in the service record from the chat. No more writing notes on my hand."
Tom Bradley
Gas Safe Engineer, Sheffield