______________________________________________________________________ From time to time my furnace will not start. i remove the covers to reset and it starts right up. The code i got the last time was 21 gas heating lockout it valve relay problem or miswired valve. do i have to call in a tech or is there a quick fix? steveangwall Replies: static “Re(1):Carrier Model 58pav070-08 Furnace” , posted Fri 23 Nov 02:01 ______________________________________________________________________ If you have a humidifier, disconnect it and see if the lockout stops happening Houston204 “Re(2):Carrier Model 58pav070-08 Furnace” , posted Fri 23 Nov 08:37 ______________________________________________________________________ You might also verify that the furnace is properly grounded. “Tip of the Day” Remember to remove power first.