Tracking down an inconsistent furnace startup in Rainier View
This Rainier View homeowner needed heat they could count on, but the furnace repair required another step. After a gas-valve replacement, the furnace started during the first test. Continued testing showed that startup was still inconsistent, so the initial success did not mean the heating problem was fully resolved.
The first diagnosis
The original visit was for a furnace that would not heat. Our technician found a fault in the gas valve and resistance in the inducer motor. The homeowner received options for repair and replacement, then approved the gas-valve repair.
We returned to replace the valve. The furnace ran during the first test, but further checks showed that startup remained inconsistent. That prompted a closer look at the electrical signals reaching the system’s components.
What further testing uncovered
The technician found that the control board was not sending proper power to all components during startup. Further inspection revealed scorch marks on the back of the board, which were documented in the job photos.
At the end of the gas-valve visit, the furnace still needed a control-board replacement for reliable startup. A follow-up visit was scheduled to address that fault. For the homeowner, there was another repair to plan for before the heating problem could be considered resolved.
For the homeowner, this meant an honest explanation of what had been repaired and what still needed attention. Continued checks exposed the additional fault and gave the next visit a specific purpose. This is a diagnosis and repair in progress; the gas-valve replacement alone did not establish consistent heating.
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