Furnace cycles on and off frequently; LED status light flashes six times repeatedly.

Safety: Turn off power before removing hoses or opening the condensate system. Condensate may be acidic; wear gloves and eye protection.

Steps to check:

• Inspect condensate drain: For high-efficiency Maytag furnaces, locate the condensate trap and drain tubing. Remove the trap (note orientation) and flush it with warm water to clear debris. Ensure the drain line slopes downward and is not kinked.
• Check vent terminations: Go outside and verify that intake and exhaust pipes are clear and properly supported. Look for intermittent obstructions like wind-blown debris.
• Secure pressure tubing: Re-seat the tubing on both the inducer port and pressure switch. Replace any tubing that is soft, brittle, or loose.
• Monitor operation: After cleaning, run the furnace through several cycles and watch for stable operation without repeated pressure switch trips.

When to call a technician: If the inducer motor speed fluctuates, if water repeatedly backs up into the inducer housing, or if the pressure switch continues to cycle, a professional should evaluate the venting design and inducer performance.