Safety

If something is wrong right now

If you smell gas, leave the house and call your gas utility or emergency services from outside.

If something is sparking, smoking, or smells like hot plastic, cut power at the breaker if you can do it safely, and call someone.

The safety line

I only suggest fixes that a reasonable person can do without special tools or training: cleaning, clearing, resetting, unplugging, and noticing things. I don't walk anyone through gas lines, refrigerant, electrical panels, or opening up anything that stores a charge.

Near the end of every article is a "When to Call a Pro" section. That's where the safe fixes stop, and it's written without jokes on purpose.

Not professional advice

This site gives general information. It doesn't replace an inspection by a licensed technician who can see your particular equipment. Your appliance's manual and manufacturer come first.