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    majdavis's Avatar
    majdavis Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 14, 2009, 01:35 AM
    Boiler Burners will not stay lit
    I have a honeywell smartvalve sv950. I have replaced the igniter and the burners light and then go out. Also the fan is always on. What can cause this?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jan 14, 2009, 05:23 AM
    If the burners come on and then go right out the flame sensor might be to blame. They do get dirty buy since you have a smart valve and probably a smart valve flame sensor they could be difficult to clean with sand paper.
    This set up is delicate so do not get around the ignitor part just clean the sensor part. Post back with results.
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