Boiler not firing up

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Old 11-27-15, 03:44 PM
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Boiler not firing up

My Weil-McLAIN boiler will not fire up. Replaced the thermocouple, aquastat and gas valve to no avail. Any suggestions on what to target next would be greatly appreciated. Chillin in Colorado...
 
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Old 11-27-15, 03:54 PM
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Start with the thermostat. Jump it & see if the boiler fires.
 
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Old 11-28-15, 07:30 AM
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Using a voltmeter, make sure you have 120 vac and 24 vac at the furnace control box. There should be a electrical diagram attached somewhere on the furnace sheet metal to show which terminals to measure. Troubleshoot from there.Good luck.
 
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Old 11-28-15, 02:13 PM
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Come to find out I purchased a bad thermocouple. Bought a new one and it fired up. OMG, spent a few hundred dollars on parts not need due to a bad $10 part. Oh well, I have heat. Thank you for the replies and support...
 
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