York Air Handler trips main circuit breaker

the sequencer acts as a time delay generally the first strip and the fan come on and off together. then 90 seconds later the second strip kicks in. each 5 kw strip pulls about 20 amps of electric. so sequence should be call for heat , sequencer warms up and bimetal disc snaps closed and energizes stage one and fan at about 22 amps, then a minute or two later second strip kicks in and amps jumps to 42 to 44 amps. . the sequencer could be bad generally a number 33233 or 33234 from white rogers or similar is the part. fan and number one strip go to number one and 2 set of contacts. number two strip goes to 3rd set of contacts. test with amp probe to be sure fan stays on till last strip is satisfied. youdon't want any strip on without a fan. the sequencer acts as a time delay generally the first strip and the fan come on and off together. then 90 seconds later the second strip kicks in. each 5 kw strip pulls about 20 amps of electric. so sequence should be call for heat , sequencer warms up and bimetal disc snaps closed and energizes stage one and fan at about 22 amps, then a minute or two later second strip kicks in and amps jumps to 42 to 44 amps. . the sequencer could be bad generally a number 33233 or 33234 from white rogers or similar is the part. fan and number one strip go to number one and 2 set of contacts. number two strip goes to 3rd set of contacts. test with amp probe to be sure fan stays on till last strip is satisfied. youdon't want any strip on without a fan.

YES THE BUSS BAR THE BREAKER CRIMPS ON TO CAN GET coroded and the looser the connection, the higher the amps. try snugging up the wires in the new breaker and move it to a new location in the panel. problem should correct itself. any two new buss bars should do the trick. an electrician can kill power and sometimes clean up the old buss bar . try some no corode on the new breaker female connections. these problems show up a lot this time of year. 2 to 3 amps of fan becomes 45 to 50 in heat. be sure connections are snug where wires enter and connect to airhandler wires. sometimes old wire nuts get loose. they should be snug and nocoroded to. nocorode is a electric grease in a tube. available at elec supply houses and home stores. best way to connect wires to electric strips is split bolts. also at home stores or elec supply house. they connect dissisimilar types of wires and get real snug. then you wrap them with a good roll of electric tape and they last forever, but good wire nuts will work and are commonly found. however of these dozens of failed connections i see 95 percent are wire nuts , especially if you join aluminum and copper. they expand and contract at different rates and that gets loose over time. always best to use split bolts on alum to copper. YES THE BUSS BAR THE BREAKER CRIMPS ON TO CAN GET coroded and the looser the connection, the higher the amps. try snugging up the wires in the new breaker and move it to a new location in the panel. problem should correct itself. any two new buss bars should do the trick. an electrician can kill power and sometimes clean up the old buss bar . try some no corode on the new breaker female connections. these problems show up a lot this time of year. 2 to 3 amps of fan becomes 45 to 50 in heat. be sure connections are snug where wires enter and connect to airhandler wires. sometimes old wire nuts get loose. they should be snug and nocoroded to. nocorode is a electric grease in a tube. available at elec supply houses and home stores. best way to connect wires to electric strips is split bolts. also at home stores or elec supply house. they connect dissisimilar types of wires and get real snug. then you wrap them with a good roll of electric tape and they last forever, but good wire nuts will work and are commonly found. however of these dozens of failed connections i see 95 percent are wire nuts , especially if you join aluminum and copper. they expand and contract at different rates and that gets loose over time. always best to use split bolts on alum to copper.