Troubleshooting

Switch mirrors skip truths. A network tap like SharkTap shows both sides of BACnet/IP, preserving timing and packets so you can fix problems fast.

Tighten BACnet Max Master to the highest live MAC + buffer. Cut PFM roll-calls, shrink token rotation, and make MS/TP feel instant.

Translate chiller sounds into fixes. A field-ready guide to hiss, whine, rattle, surge, and the four numbers that remove 80% of guesswork.

A 15-minute meter check to verify RS-485 line bias, termination, and Shield reference, so you stop ghost drops and fix comms with physics, not guesses.

The best $20 in BAS? A USB-to-RS-485 adapter. Tap MS/TP & Modbus, see the token, catch the culprit, and prove the fix, fast.

A field-tested freeze protection guide for BAS: what to check, how to test AHUs, hydronic loops, and snowmelt, so you prevent cracked coils and costly calls.

Seven copy-paste Wireshark filters, clean capture setups, and RS-485 wiring tips that solve 80% of BACnet/IP and MS/TP problems, fast.

“Auto” lies when something upstream has control. Find hidden overrides, VFD Local, bypass, safeties, priority arrays, and fix RS-485 noise that mimics overrides.

Thermal cameras expose BAS failures you’d never catch otherwise, leaks, overheating relays, airflow issues. Here’s how to use them.

A technician’s golden rule: the job isn’t finished until the space looks untouched, or better. Here’s how to make it stick.

Most BAS failures hide in comm wires. Learn how a PicoScope reveals noise, shorts, and signal loss, saving hours of troubleshooting.

Zone temps lie for predictable reasons. Use this 15-minute truth test and fix order to prove what’s real and stop callbacks.

The essential BAS digital tools every tech should carry: Wireshark, Yabe, Nmap, Greenshot, and more to troubleshoot faster and prove results

Filters, strainers, and bent fins are silent efficiency killers. Here’s how they lie to your BAS and how to stop them.

Economizers should save you money, unless the OA damper is stuck or the logic is wrong. Use this field-ready guide to diagnose, repair, and lock in real savings.

Cheap tools don’t just break, they break your credibility. Discover why “good enough” will cost you more in the field, and the pro gear worth every penny.

Your BAS isn’t moody, your clocks are. Unify BAS time sync so schedules hit, trends align, and alarms become evidence, not guesswork.

Your economizer is lying to you this month. Here’s the 30-minute autumn tune-up to fix sensors, mechanics, and logic, before heating season burns your budget.

Bad BAS graphics cost time, money, and trust. Use this operator-first design playbook to simplify screens, speed troubleshooting, and cut call volume.

The most dangerous number in your BAS is the one that looks normal. Learn how default setpoints and sensor fallbacks hide in plain sight and how to catch them fast.