A few days ago, customer had found upstairs system frozen. At the time ice was visible on the lines near the air handler located in the attic. Technician, inspected filter and evaporator coil and both are clean and acceptable. Technician tested 10 µF capacitor and capacitor is at 10 µF. Technician then had customer turn system on and off to verify blower motor responding turning on and off. While checking, refrigerant level technician suggested adding 1 pound of refrigerant that possibly when the home is cooler in the outdoor temperature is cooler, perhaps refrigerant levels would look lower and caused the icing. Added 1 pound of 410a refrigerant. System is cooling. Technician informed customer that there is a possibility of the blower relay on the control board not working at times however, today it is functioning.
Arrived at customers house and discussed issue with customer. Turned ac on to observe the noise. Diagnosed noise was coming from unit being slightly over charged and some loose screws on the outdoor unit access panel. Tightened screws and adjusted charge. Repairs made under warranty.
Arrived at customers house and discussed issue of unit freezing up. Checked indoor unit for any air flow restrictions of issues before making my way to the outdoors unit. Found no issues to cause unit to freeze up at indoor unit.connected gauges on outdoor unit and found system low on charge. Discussed diagnosis and solutions with customer. Customer went with added Freon at the time and will save up for leak search in the future. Customer also signed up to our monthly maintenance membership. Gave customer discount and one pou Bbbbbbbbbbbbbhnd of Freon for free. System took 3 pounds of 410a to be charged to factory specifications. System is custom c. ooling.
Arrived at customers house and discussed issues. Issues of unit making a grinding sound in heat mode. The gas furnace servicing the front side of the house was noted making a grinding sound. Tested system in heat and cooling but could not duplicate the sound. Inspection of indoor unit found inducer motor and blower motor in normal operation and with in specifications of manufacture. Also checked blower wheel for out of balance and blower motor for play. Nothing was found outside of normal operation at this time. Second issue of unit being extremely loud when running. Master bedroom system is in the closet of the master bedroom. Unit has short supply duct runs and a very shallow return box/filter rack. System was tested in heating and cooling. System is operating normal but high air turbulence,'. noice noticed due to short duct work and unit placement. Adjusted dip switch setting to lower the fan speed to help aid with noise from supply and return grills.
Technician installed filter rack.
Changed out the filter rack with a new one made sure it was easy to go in and out for the homeowner
Warranty- cleared drains, siliconed gaps for coil and return plenum, and programmed the thermostat to cut power when safety switch is triggered. System is now cooling We will need to return with a 16x25x1 filter rack because existing is damaged