Chasing SEER – Right Off A Cliff

With each season’s change, it can take a little time for technicians to adjust. It seems every summer we forget all about how heating systems work and every winter we purge the concept of the cooling cycle from our consciousness. Therefore, the first few weeks become an adjustment period where it requires extra focus to remember the fundamentals of gas pressure, temperature rise, sequence of operation, flame rectification, etc.

Recently, I have spoken with quite a few technicians and company owners on the topic of furnace short cycling.

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Three Reasons for Heat Sequencer Failure

mage from http://www.ncwhomeinspections.com/Electric+Furnace+Inspection
Image from http://www.ncwhomeinspections.com/Electric+Furnace+Inspection

As cold weather approaches and heating season enters, HVAC professionals might see an increase in service calls from customers who say that their heat has stopped working or won’t turn on. One of the most common problems identified is heat sequencer failure.

Several issues can contribute to the failure of this part:

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