Fixed the problems. Additionally, cleaned the coils in my air conditioner, showed me what the problem was and how it was to be repaired. He did NOT try to sell to me contracts for maintenance or any other unnecessary at the time service. I will use them again.
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Explained what he did to tweak my system and why. Let me know if there were any additional needs, he would come back to readjust to my satisfaction.
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Representative was courteous, thorough and efficient in his review, cleaning and prepping of our heating and air conditioning system for the summer months ahead.
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Preventative maintenence inspection on Tempstar gas furnace running in good condition. 20x25x4 air filter replaced today. Clean flame sensor and check ignitor ohms. Flush condensation trap and drain lines. Run test unit in heating mode from thermostat. Temperature rise is within specs. Blower and inducer motors tested good. Pvc flue vents in good condition and no sign of leaks. 0PPM CO detected during testing. System is operating properly, efficiently and ready for Winter.
Service recall: maintenance performed less than 30 days ago Found no 120V power coming into the furnace Disconnect switch failed from having the wires stabbed in rather than wrapped around the screws Bypassed failed switch Furnace would still not power up despite having 120V to it now Verified 24V at transformer secondary Pulled 3A fuse from the control board, it was blown Checked for short circuits with Ohm meter, nothing found Replaced fuse and powered on furnace It went through its startup routine and when it energized the gas valve, the fuse blew again Replaced gas valve and fuse Set gas pressure to 3.5"wc Furnace operating normally at this time
Preventative maintenence inspection on Armstrong Air furnace running in good condition. 16x25x1 air filter is new today. Clean flame sensor and check ignitor. Visual inspection of burners. Run test furnace in heating mode from thermostat. Temperature rise is within specs. Blower and inducer motors tested good. 4" galvanized B-vent in good condition and no sign of leaks. 0PPM CO detected during testing. System is operating properly, efficiently and ready for Winter.
Performed heating maintenance on a 2019 Trane two stage 80% efficient natural gas furnace 20x24x1 filter is new today Blower wheel is clean Pulled flame sensor and cleaned Modified thermostat wiring to allow thermostat to control furnace heat staging. Also set dip switches on control board for no time delay on a 2nd stage call for heat Run tested furnace High fire gas pressure set to 3.5"wc Temperature rise 44⁰ Low fire gas pressure set to 1.7"wc Temperature rise 46⁰ Temperature rise specification range is 35-65⁰ Furnace is in great shape and operating perfectly within manufacturer's specifications at this time
Expansion valve (TXV) on indoor coil is not regulating refrigerant flow properly. Indoor coil is starved for refrigerant Pumped refrigerant back to outdoor unit Flowed nitrogen through the system to keep moisture and air out while system was open Replaced TXV. Pressure tested to 400psi Released nitrogen from the system Connected vacuum pump Pulled down to 300 microns Performed ten minute decay test Vacuum rose to 740 microns after 10 minutes Pulled vacuum down to 260 microns for an additional 10 minutes Opened valves to release refrigerant back to the indoor coil Started up system All numbers are nominal for the current indoor and outdoor conditions
Performed gold cooling maintenance Filter new Blower clean Drain clear Only getting 12.5⁰ delta T across evaporator coil Pulled coil door off, no signs of freezing Top half of the coil is dry Connected refrigerant probes to outdoor unit Charge specification is 10⁰ +/-3⁰ for liquid line subcooling Getting 9⁰ subcool, charge level is correct Suction pressure is a little low Superheat is very high @32⁰... should be more like 10⁰ Expansion valve needs replaced under factory parts warranty Checked all wiring Capacitor tested at rated specification Everything else with the system is in good shape
Service recall Unit requires 30A breaker Installed square D 30A two pole breaker Unit operating normally.
Unit is operational at this time. Cooling but cannot check head pressure valve core broken. Attempted to replace but core is snapped off inside valve. Unit cannot be properly inspected. Could tell coil was clogged on condenser because of airflow problems up top, fan has suction in center and blowing out on outer rim. Unit cannot operate properly during peak heat due to venting issues. Unit should be replaced for best results
Upon arrival found 1 tripped breaker for system. Unit getting 120v not 240v. Reset power and check amp draw. Nothing pulling high amps currently, swapped out all the wire nuts I used when motor was replaced for butt connectors to avoid potential amperage increase. Unit is cooling with 11° subcool. Pulling 9.8 amps total
Remove and replace condenser motor due to motor reversed and stuck in clockwise direction when motor should be counterclockwise. Setup new motor CCW on 1/6hp 240v 5mfd capacitor black does not get used red and white are used and capacitor wires are now yellow and blue. Wash coil
Found condenser fan motor running in reverse. Motor needs replaced.
Cooling preventative maintenance performed Check filter - 20x25x4 new today Check coil for any buildup debris in drain pan and flush with water Set up thermometers Rinse down outdoor coil with garden hose Check capacitor MFD - 40+5 @ 40.79+5.06 Check OD fan Amp - 0.98 Check compressor Amp - 6.92 Verify pressures and HP-SC/LP-SH Delta T - 20° The Air handler and AC are in optimal running conditions.
2019 Armstrong air 2 ton split system attic furnace is running in good condition after today's service. Refrigerant pressures required adjustment due to high superheat and high suction temperature and low pressure. Compressor power supply 370 volt is at 10% below specs reading 32.8mfd with a 33.8uf allowable variance minimum Replace air filter supplied by homeowner and test run thermostat operation in the Attic. Evaporator coil and drain or non-serviceable due to the location access restrictions however the coil does have a primary and secondary drain installed. Evap coils will require additional labor for inspection or repair when the time is necessary. Water flush condenser coil and test run all equipment outside Install new 370 volt power supply rated at 35 + 5
Humidifier was wires up wrong at initial install. I fixed wiring and solenoid valve is bad. Customer wants price to repair or replace
Upon arrival, thernostat is in off mode. Turned on to heat to test heat pump operation. Heat pump comes on and is operating with a 20F temperature rise. Turned system on to emergency heat and it was operating with a 10F temperature rise which is below spec. Upon further investigation, found that the breaker inside of breaker panel for second high voltage supply to air handler was off. After talking with Jamie, he said that the breaker on the airhandler was off aswell but did not know that there was a second breaker for furnace in breaker panel. After turning on breaker, emergency heat temperature rise is 25F and within spec. System was only operating with one of the three heat strips. All three heat strips are operational at ~20A draw, and 240V. System is properly operating at this time.