Carrier Weathermaker SXi Codes 41 and 44
I have a Carrier Weathermaker SXi. I woke this morning to a cold house. When I checked the furnace, I noticed the error codes 41 and 44. The codes are "blower outside valid speed range" and "blower calibration fault" respectively. After powering the furnace off and turning it back on, it tries to start up and gets as far as giving me a solid yellow light indicating the furnace is operating in high heat and after about 60seconds, the furnace shuts down and shows codes 41 and 44 again. After leaving the furnace alone for awhile, I returned to it and it was giving a code 12 "blower calibration lockout". I again powered it off and on and once again it started up got to a solid yellow light and shut down after about 60 seconds of operating in high heat. While I was typing this, without touching it, the furnace attempted to start up again on it's own and got as far as a solid yellow light once again and after a 60seconds shut down giving code 33 "high limit fault". Does anyone have any insight as to what might be going on? Also, if it is just that the blower motor needs to be calibrated, is that something that can be done fairly easily or does an HVAC guy need to be called and what should I expect the cost to be for someone to calibrate it? Thanks in advance for any responses.