Quadrafire Classic 1200 shutting off

That's great news. Warm house and a spare on the shelf! I'm glad it was an easy one! That sure doesn't look like what was in the manual, though! Interesting.............. More work than I expected and it's also strange about the red wire.............

joe_pinehill said:

I double check, but I cleaned it yesterday, banged on the flue until soot stopped coming out.

Is it worth replacing the two snap discs?

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No

What are the marking on that capacitor?????

tjnamtiw said:

What are the marking on that capacitor?????

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I don't remember there being any markings on the capacitor, probably a "trade secret". But then again I don't pay much attention to them when I'm installing them.

joe_pinehill said:

tjnamtiw said:

What are the marking on that capacitor?????

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there is no rating marked on the Capacitor. 250MMF is stenciled on it, which could be 250 mega mega farads? or just a supplier part number. For what its worth, my local dealer said he rarely changes them. Unlucky random failure.

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They like most electronics do not like high temperatures. They tend to do strange things after a long exposure.

joe_pinehill said:

tjnamtiw said:

What are the marking on that capacitor?????

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there is no rating marked on the Capacitor. 250MMF is stenciled on it, which could be 250 mega mega farads? or just a supplier part number. For what its worth, my local dealer said he rarely changes them. Unlucky random failure.

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Judging by all the confirmed reversing feed motors and a lot of other problems that COULD be caused by a reversing feed motor, I would judge it's not as 'unlucky random' as we may think.

a micro micro farad is now called a pico farad. Instead of using the usual micro symbol (looks like a u with a tail) perhaps they used m..?? 250 pico farad is doable.

A starting capacitor with 250MMF in its value range is under $18, all of these drift in value over time and temperature, they also become leaky. This is one area where you stay away from new old stock.

SmokeyTheBear said:

A starting capacitor with 250MMF in its value range is under $18, all of these drift in value over time and temperature, they also become leaky. This is one area where you stay away from new old stock.

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The Quad cap, is a small none starting cap.

If it is a running cap they are a bit less however they like all capacitors will drift over time when exposed to heat inside the stoves shell.

Prices are based upon a number of factors one of which is the voltage that has be tolerated.

joe_pinehill said:

slls said:

SmokeyTheBear said:

A starting capacitor with 250MMF in its value range is under $18, all of these drift in value over time and temperature, they also become leaky. This is one area where you stay away from new old stock.

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The Quad cap, is a small none starting cap.

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I dont think its a starting Cap either, its to bias the winding/fields to have the motor turn only clockwise.

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You are correct on the Capacitor. If the capacitor starts to go, the feed motor will occasionally reverse for no good reason.
A new cap resolves this issue see http://www.iburncorn.com/new-forum/34-quadrafire/5254-quadrafire-contour-feed-motor-capacitor

Even If you have a stove with the capacitor in the junction box like a contour, the in-line capacitor part # part# 230-2150 from woodheatstoves will bypass the cap in the junction box just by plugging in the wires and resolve the issue!!