Emergency No Heat or No Water - Defective Low Water Cut Off Diagnosed & Replaced

Описание: 🚨 Emergency No Heat / No Hot Water? Here’s What Went Wrong! | LWCO Troubleshooting & Replacement

No heat or hot water in your home? You might be dealing with a defective Low Water Cut Off (LWCO) — a common but critical failure in boiler systems.

In this video, we respond to a real emergency service call where the home had no heat and no hot water, and we quickly diagnosed a faulty Taco RB-24 LWCO. Watch step-by-step as I test, bypass, and replace the defective unit — all while walking you through proper troubleshooting techniques that every HVAC tech should know.

✅ Perfect for:

🏠 Homeowners wondering why there’s no hot water or heat in their house

🔧 HVAC professionals who install, maintain, and repair boilers, tankless systems, and hydronic heating setups

🔧 What You’ll Learn in This Video:

How to identify a bad Low Water Cut Off (RB24 failure)

Testing with 24V power and the yellow end switch

Emergency jump-out to restore heat quickly

Replacing the RB-24 with a new unit

Introduction to the McDonnell & Miller FPC-1000P, a universal 4-in-1 low water cutoff for both 24V and 110V — for steam and hydronic systems!

How this single device can revolutionize your service truck setup

🧰 TOOLS & PARTS MENTIONED:

Taco RB-24 LWCO
McDonnell & Miller FPC-1000P (Part #14475)
Thermostat wire for testing
Boiler Whiz configuration kit
FW Webb – my go-to HVAC supply house

📦 Pro Tip for HVAC Techs: Always check incoming voltage before assuming the LWCO is the problem. A bad transformer or short could take out the new part too. Save time, money, and avoid call-backs.

📺 MORE TRAINING CONTENT: 👉 New to HVAC or want hands-on training? Check out my HVAC training channel: @MikeyPipesHVACtraining 👉 Just dropped a video on thermocouple troubleshooting — don’t miss it!

🧠 Did You Know?
There’s now a cordless pool cleaner that homeowners AND contractors should know about… More on that in upcoming videos. Stay tuned. 🔥

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📍 Filmed at: Pipe Doctor Home Services | Long Island, NY
📦 Powered by FW Webb | Featuring McDonnell & Miller + Taco

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