Dumbstruck by the new computer-controlled appliances? Let the Samurai enlighten you…

Click here to check out our structured, online appliance repair training courses for rookies and experienced techs.

FAQs | Repair Videos | Academy | Newsletter | Podcast | Contact

Stay connected with us...

Samurai on Facebook - become a fan today! Sign up for our free newsletter and keep up with all things Appliantology. Subscribe to our YouTube channel for lots of appliance repair tips and help! Follow the Samurai on Twitter and get timely morsels of Appliantological Wisdom! Subscribe to our MST Radio podcast to learn secrets of the trade.

Bad thermocouple? Ruud Model P50-6A

Recommended Posts


I have a Ruud Model P50-6A, installed in 1994, and for the past few years the pilot light will just go out occasionally. I've never been able to correlate it with anything like the weather or some household activity. It seems random and not so frequent that I felt like I needed to bring in someone. But obviously often enough that I find myself checking the pilot light.

Bad thermocouple? Something else? It's 17 years old, is this a sign of impending failure?



Share this post

Link to post
Share on other sites

Need appliance parts? Call 877-803-7957 now!


This could be due to many factors.

Is this Natural or LP gas?

Is the pilot flame strong or lazy?

What color is the flame?

Does the pilot flame engulf the last 1/3rd of the thermocouple?

Did you add other gas appliances to the supply since original install?

How far from the supply is the heater?

What size gas pipe is used?

Is the flue cap in good condition?

p.s. You can try removing the thermocouple from the gas valve and use a pencil eraser to clean the connection on the gas valve.

Edited by jumptrout
  • Like 2

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now