Goodman HVAC Error Code 29: How to Fix It

Q: Can I bypass the float switch to clear error 29?

No, bypassing the float switch is dangerous and can cause water damage. The switch is a safety device to prevent overflow. Always fix the underlying issue.

Q: How often should I clean my condensate drain line?

At least once a year, preferably before cooling season. Pour a cup of white vinegar down the drain line monthly to prevent algae and mold buildup.

Q: What causes a condensate overflow in a Goodman AC?

The most common cause is a clogged condensate drain line due to algae, mold, or debris. Other causes include a broken float switch, a cracked drain pan, or a frozen evaporator coil.

Abstract

Error code 29 on a Goodman HVAC system indicates a condensate overflow condition. This means the safety float switch has detected standing water in the drain pan, often due to a clogged condensate drain line. Ignoring this can lead to water damage or system shutdown.