Nashville NC Heating & Air Conditioning Services

Upon arrival customer stated system has since came back on and began cooling. Found indoor temp displayed at 71 with a set point of 70. Tech monitored system operation and found everything to be operational. Found system running a high head pressure. Tech rinsed coils and had no effect on pressure. Inspected duct system, tested TXV. Tech found no challenges or any indications causing the high head pressure. System may have went out on high pressure switch. Tech stated to call if issue occurs again, system is cooling with an 18 degree delta t.

Upon arrival tech was informed evaporator coil was freezing. Tech inspected system and found it low on Freon. Performed leak search and found it leaking at evaporator coil. Homeowner approved charging system with R22 Freon to get system back cooling until field supervisor can come out and get new system quoted. Tech charged with 3lbs of R22 Freon. System is back operational at this time but will continue to leak until a repair or replacement of system is done.

Upon arrival homeowner stated upstairs system not cooling, tech found failed capacitor, tech replaced capacitor and found high head pressure. Tech noticed filter was extremely clogged. Tech replaced filter and capacitor. System is back up and cooling at this time. Recommended ESA, homeowner stated they are selling home in the near future. System is back up and cooling.

Upon arrival tech found blower running at gas pack but receiving no Y call. Tech removed thermostat and jumped Y circuit and still received no call at unit. Only 4 wires on old side of splice, used white wire in place of Y wire for testing purposes. System came on properly and cooled with white wire confirming a break within Y circuit. Sent estimate on thermostat wire replacement as well as thermostat due to its age. Customer will make a decision for approval. Also need to get quote on CMA.

-Performed CMA Full Service on 8 Split System Heat Pumps. -System 1: No wire for overflow switch on EZ Trap as previously reported. Secondary drain line has float switch. -System 2: No wire for overflow switch on EZ Trap as previously reported. Auxiliary pan has float switch. -System 3: Overflow switch on primary drain line not wired, as previously reported. Wire near unit unused. Recommend minor wiring repair to correct. Air flow restrictions due to return location have been noted prior. -System 4: No wire for overflow switch on EZ Trap as previously reported. Secondary drain line has float switch. Condensate pump not running when full. Cleared drain line with compressed nitrogen. Drained collection pan and added water back. Pump still not running and alarm light shows. Recommend replacing pump or running drain line to nearby floor drain. Unplugged pump due to excessive heat on pump motor. Air handler will drain onto floor to floor drain for time being.

Tech returned to investigate all 3 systems not working Kitchen - tech found the system to be operational. Upon arrival the thermostat was satisfied, tech bumped set temperature down and system began cooling properly. Dining room 866D - tech found this system to be operating as well. Tech bumped set temp down and found the system to be cooling, supply temperature was 59 degrees. This one is having to work and keep up for the other dining room system. Dining Room 907D - upon arriving, technician did not find the system operational. Power was turned off and then restored. Blower came on as normal, and then compressor and outdoor fan. System ran for a few minutes and then cut off. This system has a history of refrigerant related challenges, and this appears to be a continuation of this. Prior to leaving tech confirmed all thermostats satisfied at set point.

Performed CMA inspection on 3 Gas Package Units (coils washed on kitchen unit), 2 make up air systems, and 4 exhaust fans. Gas Pack (Kitchen) - technician found the system to be operating within spec at today’s visit. All electrical tested good. Delta t observed was 18 degrees. Filters changed. Gas Pack (Dining - 866D) technician did not find any major challenges while servicing equipment today. The system is cooling properly, delta t observed was 20 degrees. Blower belt tightened - upon arrival the blower was making a loud squeaking noise. Upon inspection, tech found the belt to be loose. Once tightened, the noise subsided, system working correctly. Filters changed Gas Pack (Dining - 907D) upon arriving to the system the tech did not initially find any challenges. System was cooling good. Upon further inspection technician found Y2 thermostat wire disconnected. This is likely due to previous service. Notes from 4/6/23 state, circuit 2 to be an estimate 13 pounds low on refrigerant

Tech performed maintenance per service agreement. Tech found 40 MFD capacitor testing week 35.8 MFD. tech also found bacteria buildup accumulating inside blower fan. Tech cleaned bacterial buildup and consulted homeowner about capacitor. Tech replaced 40 MFD capacitor at $192.82 via MasterCard after homeowners approval. Homeowner has a UV bulb that is still glowing. Tech explained that it’s not as effective anymore. Homeowner stated he may replace on next visit. tech left one 20 x 20 filter with homeowner. System is operating properly at this time.

Tech performed ESA on 1 system. Tech found no challenges or concerns with system/operations. Tech thoroughly cleaned inside and outside of system. System is operating properly upon departure. Homeowner extended ESA plan via card.

Customer planning to invest in new system will know for sure this evening

Tech arrived to verify findings of previous company’s diagnosis. Tech confirmed diagnosis was in fact correct. Tech found a failed compressor, cracked heat exchanger, leaking evaporator coil as well as a failed variable speed motor/module and control board. System is 12 years old. Price of repair will outweigh price of replacement. Tech gave details to home warranty company per request, need to have a supervisor come out tomorrow after 12 to give replacement quote. Tech left power to system off. Collected house call fee by card.

Tech found leaking evaporator coil lots of rust and corrosion and outdoor fan motor over amping. Tech also found that heat strip pull out diss connect is bypassed home owner is unsure why, tech inspected pull out is missing tech suspects this is why someone bypassed. Field supervisor out to verify tech didn’t clean system per customer request.

Tech performed two system ESA, tech made recommendations for each unit. Bryant package-tech found bacterial build up in unit and recommended plasma, tech also recommended surge protection to protect major components from power surge and potential lightning strike. Payne package- tech recommended surge protection to protect major components from power surge and potential lightning strike.tech found no issues with system operation at this time. Both systems are back on and operating properly at this time. Customers are interested in adding mini splits to ESA, and said they would add them at next visit due it being TTE at that time. Customers have washable filters.

PERFORMED CMA FILTER CHANGE. FILTER CHANGE COMPLETE. CLEANED 2 MAKE UP AIR SYSTEMS.

Tech found no difficulties at this time. Tech did not enter home per homeowners request

FOUND SYSTEM COMPLETELY FROZEN UPON ARRIVAL. DE-ICED SYSTEM TO BEST OF ABILITY AND MONITORED PRESSURES. DIAGNOSED LOW ON CHARGE. UNABLE TO ACCESS AIR HANDLER AT THIS TIME. LEAK LIKELY WITHIN EVAPORATOR COILS UNABLE TO LOCATE AT CONDENSER. COMPRESSOR READING WITHIN BAD/CAUTION RANGE. COSTLY REPAIRS NOT RECOMMENDED. SPOKE WITH MR. CUPP. HANDED OVER TO CHRIS/COLBY.

System #5 Found a shorted compressor contactor. Resistance value is at 1.5ohms. 5amp fuse needs to be replaced. System #7 needed a disconnect fuse. Amp draws within specs. System #1 Found it on hard lock out upon arrival. Reset it and observed the operation in heat mode and cool mode.system is set on cool mode at the thermostat with a low set point. Thermostat have a locked lock box. Tech suspects a low r410a charge and recommends a leak search during the next service visit. System #6 has a clogged condenser coil. Needs to be cleaned. System #3 refrigerant levels within specs. System #8 found it on hard lock out, reset it to test it and automatically started up in cool mode. Refrigerant levels within specs, tech does recommend replacing the filters more frequently, thermostats are locked at the box. Currently set to 66 cooling. Tech recommends to adjust the temperature accordingly and not alter the temperature as much. Most of the Mechanical rooms are locked. Repairs were taken car

Performed CMA inspection on 8 split systems. Air handlers 7 & 8 had been mislabeled prior. Corrected as appropriate. -Split System 1: Observed fault flash code 4 “hard lockout.” Performed hard reset of system to operate condenser. No keys on site to access air handler in mechanical room. Regional maintenance is in control of keys. -Split System 2: Sure switch in air handler primary drain trap not connected and wiring missing. Recommend replacement of sure switch. Provided estimate $186.30. -Split System 3: Observed fault flash code 4 “hard lockout.” Performed hard reset of system to operate condenser. System continued to operate without fault codes throughout inspection. Observed high negative pressure in return duct flex due to poor air flow. Air filter in poor condition and return located in closed room. Significant suction at door to storage room as a result. Recommend more frequent replacement of air filter. System would benefit from relocation of return duct. -Split System 4:

Tech performed CMA FULL SERVICE ON 3 Gas Package Units, 2 Make Up Air Units, and 4 Exhaust Fans. Upon inspection tech found all 3 gas packs with low gas pressure feeding the furnaces on each system. Tech adjusted pressure successfully on systems 1 and 2 but was unable to get the correct pressure on system #3 due to running out of trim on the gas valve. Tech also found ODF #2 on system #3 not operational as well as a large hole in the condenser coil. Due to this and the age and condition of the system tech recommends replacement. Systems 1 and 2 as well as all make up air and exhaust systems are operating properly at this time. Tech has attached system performance reports to this invoice.

Performed routine maintenance per energy savings agreement. Technician found no challenges at todays visit. System was cleaned thoroughly and all electrics tested within spec. System is operating normally in heating and cooling modes. Delta t observed during maintenance today was 20 degrees. Tech did follow up on Plasma Air Purifier from last maintenance. Customer declined this time as well, however tech did add it to an estimate should they decide to make the purchase.

Performed ESA.

Tech washed and serviced unit and found no challenges at this time. Unit is cooling properly with a delta t of 21 with a return of 74 and a supply of 53

Re secure return ducts at air handler 7 in attic per prior approval. Replace weak fan capacitor on heat pumps 2, 3, 6 & 8 per prior approval.

Tech completed diagnostic. Found relay board not energizing y2 . Homeowner stated he will have company who installed relay board this year run a warranty part replacement or thermostat reprogramming Homeowner will call Monday if he wants coil replaced. At this time unsure if he wants repaired

Tech found system low on charge and not staging into second stage Tech temporarily bypassed staging by connecting y1 to y2 at outdoor unit Thermostat is a communicating system that likely goes under house and translates to outdoor unit. Due to dissatisfaction tech added refrigerant and we will need to schedule appointment when it’s not raining. Need to confirm leak is in evap coil and need to open com waterproof box to confirm controls are set up correctly.