Guided troubleshooter

Start with the symptom

Choose the symptom you can verify on the unit. Follow the checks and use the readings to narrow down the problem.

Step 1

What is the primary complaint?

Choose the symptom you can verify in the field. The path will ask for checks before suggesting a cause.

Safety note

HVAC work can involve high voltage, rotating equipment, pressurized refrigerants, and combustion systems. Use this site as a reference only. Follow the equipment manual, applicable codes, PPE, lockout/tagout, and current refrigerant rules. Field cases and troubleshooting paths are case-specific and are not OEM procedures or universal targets.