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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Lennox surelight control board not of its #, when I test

Customer Question

lennox surelight control board not of its #, when I test between r an c I get 28v,but with unit on an calling for heat, I only get 16v, Help please
Submitted: 10 months ago.
Category: HVAC
Customer: replied 10 months ago.
morning just wanted to say kina new at this but my first thought bad lennox surelight 738738 or 9, but not sure.because I jump the r an w termal an bring the unit on an heating,but at the thermostat it want bring the unit on because there is only 16v. thanks
Customer: replied 10 months ago.
this furnace model# ***** ***** an seral# *****(###) ###-#### again thanks for your help.
Customer: replied 10 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Regan Land replied 10 months ago.

Good morning - My name is ***** ***** it would be my pleasure to help you get this going. When you say you jump R and W and the heat comes on, do you jump at the furnace or at the thermostat?