Hi William, hope you are having a nice day

On 11-Mar-05 At About 23:11:13, William W. Plummer wrote to All
Subject: Furnace cycling

WWP From: "William W. Plummer"

WWP Gary Stone wrote:


WWP My guess is the "stack cutoff" sensor is bad. The idea is that
WWP shortly after the ignition goes on, the gas should lite and heat up
WWP the stack. If it doesn't, the ignition will be killed. But after
WWP several tries, it gets warm enough to stay on. Maybe the cold
WWP outside temp has something to do with it.

This is not the way ignition occurs. the way a pilot is sensed is called
flame rectification. the only thing that comes close to what you are saying
is the limit switch which has a totally different purpose.

WWP The sensor probably needs to be replaced. It's a safety-related item
WWP and the repair should be done by a licensed professional.

this is true of any safety device such as the limit.

-= HvacTech2 =-


... "Everywhere is walking distance if you have the time." - s.w.

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