Four Oaks NC Heating & Air Conditioning Services

Tech replaced upstairs and downstairs evaporator coils per previous techs diagnosis. Tech brazed with nitrogen, pressure tested, pulled vacuums and recharged what compressor couldn’t hold to 8 degrees subcooling per data tag. Tech also had to replace upstairs trap due to not enough between out and trap to cut trap and reattach with a coupler. Both systems are cooling properly.

Tech performed esa on goodman heat pump package unit. Tech found no challenges at todays visit.

Found primary drain line clogged, along with EZ trap cap open which caused float switch to bypass filling up auxiliary pan. Cleared drain line, removed excess water, and tested float switches. Secured EZ trap cap. Tested drainage with no challenges. Invested in ESA (2) systems. Call to schedule 1st visit. Would like to schedule a couple weeks from today.

UNIT #6- 5 TON GOODMAN SPLIT HEAT PUMP

Found the blower wheel broken on system #2(labeled at the disconnect). The Evaporator coil has frost due to lack of airflow. System does have indications that it has been worked on before. Tech recommended having our field supervisor provide a proposal on having the 3 gas packs under a maintenance contract and costumer decided to wait for now until a decision is made about the the system that it is down. System #2 is currently down. Collected by check. Mail in the copy of the invoice and estimate by regular mail to the address provided by Mr. Bob.

Upon arrival homeowner stated inside portion was making a real loud noise when running. Tech found dead mouse in blower wheel causing blower to be off centered when running. Tech removed mouse and noise subsided. Charged a trip charge for todays visit.

Upon arrival homeowner stated a burning smell near the bathroom. Tech inspected system, found no burnt wires, and blower amp draws were within spec. Smell comes and goes and is only in one spot of the the home. Home has under pinning and is unable to check duct work. Could not find where smell is coming from unfortunately, homeowner is aware. Homeowner invested in MPA and also charged a house call fee for todays visit.

Upon arrival tech was informed older system was freezing. Tech found all components running, checked pressures and were low. Tech performed leak search and found leaks at the evaporator coil. Contacted office to have field supervisor go over best options due to system being older R22. Informed customer of findings and would like quote for new system. Left breaker off at condenser.

Tech charged the upstairs system (warranty) with 2lbs of R410a refrigerant until the parts come in. System is cooling, however, due to the major leak found at the indoor coil, non-condensible s are entering the system slowly which is messing with the refrigerant pressures, subcool and superheat which will effect the cooling performance. Thermostat was reading at 73 degrees and set on 70. System is cooling just not efficiently as it should for now. Door was locked prior to departure.

Tech serviced and cleaned system, tech found no challenges at this time, system is back up and running with a delta t of 20+,tech used two16x20x1

Tech serviced and cleaned unit, tech found evaporator coil starting to show signs of rust and corrosion, tech notified homeowner, tech didn’t pick up on any leaks at todays visit, system is back up and running with a delta t of 20+ degrees, tech found no challenges at today’s visit.

Tech found R22 system low on refrigerant, customer wants to charge system to get by tech added 3lbs of r22 to get to designed run specs and proper superheat for piston. System is back cooling with 17 delta t.

-Arrived to find thermostat labeled as AC #6 blank. Verified no low voltage on thermostat wires behind thermostat. -Found primary float switch tripped on system. Cleaned drain trap, cleared drain line with compressed nitrogen, and added algae tabs to primary drain pan. Flushed line with algae tabs dissolved in water. Confirmed settings on thermostat are still correct for system. System now cooling to satisfaction. -Observed portion of drain line above employee bathroom sagging. This likely allows water to sit stagnant in drain pipe, which is conducive to algae buildup and possible clogging of drain line. Customer may want to have drain pipe leveled/sloped.

-Dispatched to recharge 2 systems to acceptable cooling pressures as a temporary repair under warranty until replacement evaporator coils arrive for permanent repair. Coils expected to arrive this week. -Found both condensers operating upon arrival. -Found 2.5 Ton system condenser serial number ending in M44F with overly sufficient subcooling. Did not add refrigerant. -Recharged 3.5 Ton system condenser serial number ending in 9TKF with 5 pounds R410A to achieve subcooling of 8-10.

-Tenant states he had noticed system short cycling earlier today and cut system off at thermostat. -Upon arrival, system was operating correctly. Temperature difference in cooling mode is 17 degrees, as appropriate. Pressures seem okay. -Could not replicate systems at time of visit. Suspect intermittent issues may be present but could not identify at this time. Customer stated he changed air filter after issues began. Air flow restriction may have been causing erratic pressures.

Upon arrival tech was informed system was blowing air but it wasn’t cool. Inspected system and found the contactor receiving 24v and pulling in. Had 240v going into contactor but it wasn’t going through. Look and found ants behind plunger preventing contactor from making contact. Homeowner approved replacing contactor with new one that has a shunt cover. Tech also checked capacitor for compressor and od fan and found it reading weak but homeowner wanted to wait on replacement. Turned system back on and condenser came on. System is back operational at this time.

Upon arrival tech found condenser not running due to failed capacitor. Tech replaced capacitor after approval and tested system. Amp draws are within spec, system is back up and cooling.

Upon arrival tech found condenser not running due to failed dual run capacitor. Tech replaced capacitor after approval and tested system. Amp draws are within spec, delta t is now within spec. System is back up and cooling, recommended investing in service agreement.

Upon arrival tech found upstairs system with a set point of 68 and indoor temp at 70 degrees. Customer stated when moving in he cut system on and indoor temp never dropped from 80 degrees for a long period of time. Tech thoroughly inspected system and found everything to be running properly. Monitored pressures and found slightly high head pressure and low subcooling, system needs to be serviced and cleaned. Recommended investing in maintenance agreement. All amp draws and components were within spec. System is draining.

Tech started with upstairs TEM6 air handler. Tech found aluminum U bend on bottom center of indoor coil leaking. Confirmed with soap bubbles. See pictures. Put a mark on u bend to identify it. Indoor coil is a coated coil. Inspected outdoor unit. Found no refrigerant leaks. Tech inspected crawlspace TEM6 air handler. Found aluminum U bend near the top front apex of indoor coil leaking. Marked it. See picture and video. Inspected outdoor unit. Found no refrigerant leaks. Both indoor coils are leaking. Installed both systems in July 2022. Upstairs coil is a coated coil. We charged systems up yesterday. Need to call Tina Winborne tomorrow to follow up on solutions. Install warranty.

Upon arrival tech found both systems not cooling, tech found both systems reading low on refrigerant tech charged both systems up. Are now cooling with 18-20 delta t need to come back tomorrow to perform leak search tech ran out of refrigerant before downstairs system could get to correct pressures. Tech was able to get system to cool with 17 delta t for the meantime. No charge per office

Upon arrival tech was informed upstairs and downstairs thermostats were not keeping up. Tech inspected systems and found both condensers not running. Tech reset breakers and condenser for the upstairs came on but the downstairs did not. CU #2 had a failed dual run capacitor. Installed turbo and system came back on and started cooling. Check CU #1 capacitor and it was reading weak but still bringing on the compressor and fan. Customer approved going ahead and replacing that one to. Tech replaced with a turbo capacitor and system began cooling again. Checked delta T on both systems and were within a good range. Both systems are back cooling at this time.

Tech performed esa on trane split heat pump, found no challenges at todays visit Customer wants to think on renewal

Tech found system throwing multiple low suction error codes. Tech found low suction high superheat and only 3 degrees subcooling with an EEV. Tech added charge to get subcooling up for EEV diagnostic purposes and found suction increase and superheat drop indicating the EEV is pulsing properly. Tech performed a thorough leak search on both coils and all joints and found no leaks at either coil or joints. Tech found discharge schrader visibly leaking and tech inspected cap and found no rubber seal on the cap. Tech replaced schrader and cap and fully recharged system. Tech let system run for 30 minutes to verify suction is staying within range.

Tech performed esa on trane split heat pump. Couldn’t in contact with homeowner after maintenance was finished no inside work performed