Power surge now no heat — Heating Help: The Wall Visit HeatingHelp.com Home› Oil Heating Welcome! Here are the website rules, as well as some tips for using this forum. Need to contact us? Visit https://heatinghelp.com/contact-us/. Click here to Find a Contractor in your area. Power surge now no heat jlg3256 Member Posts: 5 November 2016 in Oil Heating I bad a power surge due to open ground when tree hit wires. Fuses were blown. After furnace would not start. Blower can be turned on, thermostat appears to br calling for heat. Honeywell r7284 screen is dark and will not come on when reset button pushed. Any help woukd be greatly appreciated- its Sunday and if its something simpleI can check before calling service person. 0 Comments SWEI Member Posts: 7,356 November 2016 Check the furnace control board for a flashing LED or a numeric display. Do you have a multimeter? Check the transformer for ~27 VAC at the output. 0 jlg3256 Member Posts: 5 November 2016 No display at all 0 jlg3256 Member Posts: 5 November 2016 I don't have a multimeter. I can turn blower on. 0 SWEI Member Posts: 7,356 November 2016 Sorry -- I mis-read that number as being a thermostat and it's actually an oil burner primary control. You need to verify that you have 120 VAC power to the control first. No meter = hard to troubleshoot. Blank display could easily be caused by a damage from a power surge of that type. 0 jlg3256 Member Posts: 5 November 2016 Yes, it is primary oil control box. Thanks, I'll check with my son about meter. I was hoping someone would tell me there's a reset I dont know about or fuse! Hate having to call for emergency service - probably just wait for tomorrow. Thanks for your response! 0 STEVEusaPA Member Posts: 5,775 November 2016 If you have 120v at the primary control, the primary was sizzled. If you don't have 120 coming in, the board or the fan/limit could've taken the hit. There's most likely no hidden blown fuse. BTW, what's more important is that you're system took an electrical hit. You absolutely want someone to come out and check all the safety limits to make sure something didn't get welded shut, and won't open (turn off your burner) for an unsafe condition. steve 0 jlg3256 Member Posts: 5 November 2016 Steve, thanks for the info and help. I really appreciate it! Call to service guy tomorrow. 0 billtwocase Member Posts: 2,385 November 2016 Kiss all the low voltage controls good-bye. No repairs, just replacements -1 Categories 118.1K All Categories 83K THE MAIN WALL 2.8K A-C, Heat Pumps & Refrigeration 45 Biomass 406 Carbon Monoxide Awareness 17 Chimneys & Flues 1.6K Domestic Hot Water 4.4K Gas Heating 108 Geothermal 149 Indoor-Air Quality 2.8K Oil Heating 46 Pipe Deterioration 706 Plumbing 4.9K Radiant Heating 353 Solar 13.3K Strictly Steam 2.9K Thermostats and Controls 50 Water Quality 604 Buy, Sell, Barter 31 Industry Classes 65 Job Opportunities 13 Recall Announcements Like Us on Facebook Follow Us on Twitter Find Us on YouTube © HeatingHelp.com Powered By Vanilla