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    tribeca8's Avatar
    tribeca8 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 17, 2009, 10:56 AM
    Weil Mclain Lockouts
    Purchased a Weil-McLain Ultra 230 Hot Water Boiler Natural Gas about a yr ago.
    From basically day 1 have had lockouts. In the 30-50 range over a course of weeks. Now down to 18. Reason: Return temp exceeded the supply temp. Have had numerous visits from Weil Mclain people and people that installed the heater. They can't find a reason. What would be reasoning for the return temp. to exceed the supply temp.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 17, 2009, 11:38 AM
    I would first start by testing the sensor(s) since when they go bad or out of range problems like what you are having come up. There should be a ohm value stated in the master repair/service manual for your unit that came with the unit. If not go to there web site and download it.
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