At My Kingo Service, we provide fast and reliable HVAC repair services when homeowners face heating or air conditioning problems. This completed job in Katy, TX shows how our expert furnace repair technician restored full heat after a furnace suddenly stopped working. The homeowner reported cold air coming from the vents, no heat reaching the rooms, and a zoning system that was not responding.
Issue: Furnace Blowing Cold Air and No Heat
The customer contacted us because their furnace was running but not producing warm air. The zoning system had also stopped working, which meant no heat was reaching different areas of the home. These types of furnace problems are very common in homes that use multi-zone HVAC systems.
Complete HVAC Diagnostic and System Inspection
Our HVAC specialist performed a full system inspection to find the real cause of the problem. During the diagnostic, we found that the HZ311 zoning panel had gone into a lockout mode. This lockout was blocking the furnace from sending heat to any of the home’s zones. We also carefully inspected the zoning control board and dampers.
Damper Wiring Repair and Zoning System Correction
After checking the system, we discovered that both dampers were wired incorrectly. This faulty wiring was stopping the system from working properly. We corrected this by converting the dampers to the proper three-wire setup. Our technician also reconnected the Honeywell M847D actuators by correctly wiring the common, open, and close terminals to ensure smooth and reliable operation.
Furnace Testing and Heat Restoration in Katy, TX
Once the wiring was fixed, we reset the zoning logic and tested the complete system. We confirmed that the heat call was reaching the furnace, the inducer motor was working, the ignition system was functioning correctly, and the burners were firing as they should. After full testing, warm air was restored throughout the entire home.
Final Result: Fully Working Heating System
After completing the repair, the homeowner in Katy, TX now has a fully working heating system. Airflow is balanced across all zones, the zoning system controls are reliable, and the home is warm and comfortable again. This job shows our commitment to fast, professional furnace repair and zoning system repair services in Katy and surrounding areas.
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