Problem: Electric furnace heat will not come on or fan Aug 28, 2012Problem: Electric heat will not come on or fan blower on the air handler will not come on. Answer: 1. First and most important, Please make sure your electrical power is turned off before trying to repair or inspect any type of electrical appliance. I would recommend that you purchase a Volt Ohm meter tester for some of the troubleshooting procedures listed in this Amana Furnace Repair Guide | Troubleshooting, Error Codes Ruud Ruud air conditioner review, prices, and model comparison. The contact that controls the blower motor on your thermostat may be stuck closed, causing the blower motor to run continuously. Use a multimeter to check for continuity. If it appears the thermostat is the issue, replace it. Review wiring diagram to correct polarity. bryant furnace error codes | Twintech Heating and Cooling CODE: 4-4. RESULT: BLOWER CALIBRATION FAULT FIX: Indicates the calculated blower speed is below 250 or above 1300 RPM. Unit will default to low or high heat mode if possible. If this fault occurs in conjunection with fault #41, check wiring to motor otherwise refer to the trouble shooting guide. Popular HVAC Questions & Answers • Arnold's Service Feb 03, 2013If you do not then you either have a thermostat problem or a wiring problem. If the G & C check out OK then go to the terminals that provide power to the blower motor and see if you are getting 110 to 125 volts to the blower motor. If you are the control board is OK and probably the blower motor is bad or the capacitor is weak or bad.