Weil McLain Ultra 3 LOCKOUT! Emergency No Heat – We Had The Parts (Saved the Night!)

Описание: Saturday night. Emergency call.
No heat. No domestic hot water.
Weil McLain Ultra 3 in full lockout.

In this uncut 15:48 service call, I respond to a residential no-heat emergency and diagnose a manual ignition retry lockout on a Weil McLain Ultra 3 155 condensing boiler.

But here’s the twist…

The boiler wasn’t the only problem.

A failing ECM blower module in the air handler was causing overheating conditions and intermittent faults — and this is EXACTLY why real diagnostics matter.

🎯 Key Lesson for Service Technicians:
Always verify airflow before condemning the boiler. The system tells a story. You just have to read it.

And here’s the difference:
👉 Pipe Doctor has the parts.
No waiting. No guessing. No “we’ll be back next week.”

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We service boilers, heat pumps, air handlers, ECM motors, fan coils, and high-efficiency systems.

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⏱️ CHAPTERS

0:00 Emergency Call – No Heat
1:15 Ultra 3 Diagnostics & Red Screen
3:45 Manual Lockout Error 31
6:10 Circulator & Zone Testing
8:20 ECM Blower Investigation
11:40 Sensor Position & Delta T Analysis
13:50 Target Temp Adjustment
15:10 Maintenance Plan Win

If you’re a technician, drop a comment:
👉 Have you seen Ultra 3 lockouts caused by airflow issues?

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#WeilMcLain #HVACTechnician #NoHeat