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Heater does not start

I have a Lennox air handler and the heater does not work I try the thermostat voltage reading and they were okay when I switch to heaqter the unit starts but but no hot air, is there any reset in does unit since they don't work since I change the thermostat.

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  • luvil Nov 28, 2008

    I have a blower but I will check again the thermostat wiring to make sure is okay

  • cotillionsor May 11, 2010

    all systems have a blower. Does it use gas to heat or only electricity?the wiring is totally different depending on which it is.

  • cotillionsor May 11, 2010

    sounds like you may have wired the tstat wrong is this a heatpump or gas furnace. assuming heatpump by you stating airhandler instead of furnace you need to verify wiring at tstat and some you even need to go into the installers menu to tell it if it controlling a hp or gas furnace. please let me know how you have the tstat wied and type of system and i can help further.



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There was a problem with the thermostat wiring like you suggest and it work. Thank you for your input and I will recommend this site to all my friends in case they need some help. Your response was fast too specially being a holiday weekend. Thank you again.

Posted on Nov 30, 2008


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