Furnace will not start; LED status light flashes seven times repeatedly.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety: Turn off power and gas before touching the gas valve. Never attempt to disassemble the gas valve body.
Steps to check:
- Inspect wiring harness: Verify the multi-pin connector at the gas valve is fully seated and free of corrosion. Check for broken or loose wires between the valve and control board.
- Check ground connections: Ensure the furnace cabinet and control board ground wires are tight and free of rust. Poor grounding can affect gas valve operation.
- Visual inspection of valve: Confirm the installed gas valve matches the specifications for your Maytag furnace model (correct brand, capacity, and gas type).
- Operational test: With a multimeter and proper training, a technician can verify 24 VAC is present at the valve during ignition. Homeowners should not attempt live gas valve testing without experience.
When to call a technician: Any suspected gas valve failure, misapplication, or control board relay issue should be handled by a licensed HVAC technician due to combustion safety concerns.