GOODMAN ERROR CODE LC • TRI-STATE AREA
Goodman Error Code LC: Limit Circuit Open
Your Goodman furnace overheated. Learn causes and solutions.
Call 908-249-9701Frequently Asked Questions
What is Goodman error code LC?
Goodman error code LC (Limit Circuit) indicates the high temperature limit switch has opened due to overheating.
What causes Goodman LC error?
Common causes include dirty air filters, blocked vents, blower motor issues, or dirty evaporator coils.
How do I fix Goodman LC error?
Check and replace air filter, ensure all vents are open, and verify blower is running. Let furnace cool before reset.
Is LC error dangerous?
LC is a safety feature preventing overheating. Repeated overheating can damage the heat exchanger.
How do I reset Goodman LC error?
Turn off power, wait 30 minutes for cooling, address airflow issues, then restore power.
Can dirty filter cause LC?
Yes, dirty filters are the #1 cause of LC errors. Replace filters every 1-3 months.
Where is limit switch on Goodman?
The limit switch is mounted on the plenum above the heat exchanger, monitoring internal temperatures.
How much does LC repair cost?
Repair costs vary depending on the issue. A filter replacement is the most affordable fix, while limit switch or blower motor replacement costs more. Contact a professional for diagnosis and pricing.
Why does LC happen repeatedly?
Recurring LC indicates chronic airflow problems - check filter, vents, ductwork, and blower operation.
Who repairs Goodman LC in the tri-state area?
Dimatic Control LLC provides expert Goodman service. Call (908) 249-9701 for assistance.
Can closed vents cause LC?
Yes, closing too many vents restricts airflow and causes overheating. Keep most vents open.
Should I bypass limit switch?
Never bypass a limit switch - it's a critical safety device preventing fire and carbon monoxide risks.
How long until limit resets?
The limit switch auto-resets once temperatures drop, typically 15-30 minutes after shutdown.
Can ductwork cause LC?
Yes, undersized, blocked, or poorly designed ductwork restricts airflow and can cause LC errors.
Does warranty cover LC repairs?
Goodman warranties cover parts for registered units. Check your documentation for specific coverage.