Ruud UBHC Air Conditioner "fix blower power furnace fault" Questions

fix it. Error code 12 is blower on after power up. Meaning: after you turn on power to the furnace for aprox. 60-90 seconds the blower will run. The blower should then shut down and the furnace should

...power exhaust fan(debris has gotten in the housing preventing an easy start), i usually find the cause to either be a bad pressure sensor hose or debris in ths exhaust fan housing either blocking ...

...blower motor noise. Have the tech come back. the problem did not exsist before he pulled the board. He either left his jumper wire connected by misteak or he shorted the wires to get the fan come on ...