Hi,
I have a Goodman GMPN060-3 gas furnace.
I get a 5 blink diag code, the indoor blower comes on.
It worked OK for 3 hours this morning, I had to have the board replaced back Nov 04,
I am wondering if it is going bad again, I am on disablity with limited income, any help will be gratefully appreciated.

Best Regards,
Dale Reitz

Here is your complete factory service manual.

http://www.hvacpartsshop.com/Gmph075-4%20Series.Pdf

Page 64 has your wiring diagram.

Page 31 contains a trouble shooting diagram.

Service flash codes are on page 51

The cheapest item to try would be to clean the flame sensor with some steel wool or sand paper. For other test items you will need a meter with the knowledge to use it and follow the specific instructions in the service manual. More than likely you will need to contact a local HVAC service person to do a ON SITE inspection and repair of your furnace.

Thank You.
I ordered a new sensor will be in Tuesday.
I had a repair man here in May, cost me 90 bucks and couldn't figure out the problem.

Thanks Again!

Sounds good I hope it all turns out well.

Testing my heater before winter gets here
The burners come on and run for a few minutes then go out and the ignitor restarts them again. Could this come dust from the summer burning off?