Verified OEM alarm codes, causes, and remedies at your fingertips — even with zero signal in the yard. Plus calculators, pre-trip inspections, and AI assistance that cites official service manuals. Designed for professionals who fix reefers for a living.
Purpose-built for field technicians: fast lookups, solid data, and tools that save real time during a service call.
The core of the app. A complete, searchable database of Thermo King and Carrier alarm codes with the code number, title, severity, detailed description, common causes, and OEM remedies. Filter by brand, severity, or keyword. Star favorites. Export as a PDF for your work order. Everything runs locally on the device — no signal, no login, no waiting.
R-404A, R-452A, R-134a and more. Superheat, subcooling, and target superheat calculators. Toggle between °F/°C and psi/bar with one tap.
Guided PTI checklist with pass/fail, photo attachments, and a branded PDF report you can email to dispatch or attach to the work order.
Step-by-step troubleshooting flows for common faults. Log what you checked, attach photos, and generate a full session report at the end.
Wiring and refrigeration-circuit diagrams bundled offline, plus on-demand AI-generated diagrams when you need something specific.
Ask a question hands-free while your hands are on the unit. The assistant searches official service-manual content and cites its sources — it's a research helper, not a replacement for your judgment.
The full offline alarm database, calculators, and pre-trip inspection are free forever. Premium unlocks AI-assisted diagnostics for when you want a research partner on the unit.
Everything a working technician needs to look up an alarm and get moving again.
Everything in Free, plus AI assistance that searches official service-manual content and helps you think through the call.
Cancel anytime. Subscription billed through the App Store.
ReeferTechPro is built for qualified reefer technicians. The alarm database is sourced from published OEM service literature for Thermo King and Carrier, and every code entry lists the original causes and remedies so you can cross-reference against the unit's own service manual.
The AI assistant is exactly that — an assistant. It searches official service-manual content to help you think through a problem faster. It is not a diagnostic authority. All AI suggestions must be independently verified against the official OEM service manual for the specific unit model and serial range before any work is performed.
Incorrect repairs on refrigeration systems can cause serious injury, equipment damage, cargo loss, and environmental harm. Always follow your shop's safety procedures, lock-out / tag-out policies, refrigerant handling regulations, and the OEM's published service instructions. If a recommendation conflicts with OEM guidance, follow the OEM.
The offline alarm database alone saved me on a call in a cold-chain yard with no signal. I pulled the code, got the causes, and had the unit back online in under an hour.
The PTI checklist and session PDF reports changed how we handle paperwork. Dispatch gets a clean report emailed from the unit side — no more handwritten forms scanned at the end of the shift.
I like that the AI cites the service-manual content it pulled from. It's not guessing — it's pointing me to the right page faster. Then I go verify in the OEM manual myself. That's how it should work.
Start with the full free tier. Upgrade to Premium whenever you want AI in the mix.