heat and ac on at same time
Posted: Tue Jul 12, 2011 9:17 am
I have an intertherm/Nordyne E2EB-012HA furnace ac unit. It was working fine and then suddenly no ac. The coil was cold and air was flowing so I started with the thermostat and worked my way back. Here is what I found.
1 heating elements are on at the same time as ac.
2 even if the thermostat is totally disconnected the heater remains on and the blower motor runs at lower speed.
3 the sequencer has a burnt smell and one of the heavy black wires seems a bit over heated (crispy) and the wire nut has a melt mark.
There are no part numbers that are legible and some of the metal is rusty.
I am hoping those sequencer is the problem, if anyone has any other ideas as to the cause please let me know. Also if anyone knows the part number that would help too.
Thanks
Karl
1 heating elements are on at the same time as ac.
2 even if the thermostat is totally disconnected the heater remains on and the blower motor runs at lower speed.
3 the sequencer has a burnt smell and one of the heavy black wires seems a bit over heated (crispy) and the wire nut has a melt mark.
There are no part numbers that are legible and some of the metal is rusty.
I am hoping those sequencer is the problem, if anyone has any other ideas as to the cause please let me know. Also if anyone knows the part number that would help too.
Thanks
Karl