Day & Night by Carrier fan blower motor stuck on and heat doesn't work
:confused: Day & Night by Carrier central heating and a/c unit
a/c unit model # 518CXX057000MACA date of mgf=1791
heating unit model# 394JAZ060080AAFA date of mgf=4592
Efficiency= natural draft?
Type= forced air
Fuel Type= NG
Problem: After changing original Honeywell T-stat with newer Honeywell digital
model # CT3355A 1003-1, the fan blower motor is stuck on and cannot be controlled by new t-stat (auto or fan lever). I can only shut off by disconnecting the ac cord from the outlet or taking the heater grate off & safely disconnect. I tried putting the old t-stat back and blower is still stuck on. Secondly, the auto electric igniter for the heater is not working, so that the heater does not come on. Prior to changing t-stat all systems worked OK.
When I was disconnecting the colored wires from the old t-stat, I may have touched the Red with the White wire but other than that I was able to connect the W, Y, G and Rh wires which has brass jumper to Rc on the new unit. The digital display works with 2AA batteries.
Is there a reset button or a relay "stuck on" inside the fan blower unit? What and where is the circuit board for this unit? I was also thinking the new t-stat may have been defective? Could someone please advise me?
Thanking you in advance!