Raleigh NC Heating & Air Conditioning Services

Performed CMA Inspection on 1 rooftop gas package unit, 1 split heat pump unit, 1 exhaust fan and 1 make up air unit. Gas pack - tech found no challenges with gas pack operation today. System is cooling properly and holding a 20 degree delta t. Tech also tested gas heat and found no challenges. Heat exchanger was inaccessible, however, the tech found no roll out or indicators of air infiltration at this time. Split Heat Pump - system is operating properly at the time of maintenance. The blower is emitting a squeaking noise as noted on last visit. Tech ensured belt is tight and aligned, however, the squealing persisted. As noted last visit, it could be due to the bearings on the blower shaft. Tech also tested function of exhaust fan and make up air unit. Make up air fan belt is loose and deteriorated. Will need to be replaced. Previous tech has built estimate for this repair. Filters - all filters changed and old ones disposed of.

Performed CMA Inspection on 4 Split Heat Pump Systems. System 1 - technician did not find any challenges while servicing equipment today. The system is heating/cooling properly. Condensate lines flushed and re-primed. Tech also found the outdoor fan capacitor testing weak. Estimate built for this repair. System 2 - upon arrival the technician found the evaporator coil frozen completely. Tech verified blower operation and replaced filter. Tech thawed coil and performed leak search. Tech was able to find a leak. Office has been notified and is building estimate for repair. Tech also turned over to field supervisors office to give customer all options going forward. System 3 - per notes from last visit this system has challenges pertaining to the high voltage going to the air handler. Thermostat is blank at today’s visit, no voltage at the air handler. System 4 - no challenges found today. System is operating and cooling normally. Tech also tested heat and found no challenges. Attic

Tech found a constant torque x13 blower rocking back and forth indicating a failed ECM. Customer approved repair.

- Tech replaced failed blower motor under warranty and confirmed proper operation. System is operating normally at this time. Thermostat set to 73 at tech departure.

-{Room 109 Packaged Heat Pump}- - Tech found hard lockout (4 flash) fault code displayed on the control board upon arrival. Cleared code and observed the blower motor not operating. Confirmed compressor and condenser fan are operational. - Confirmed 24v and 240v power input with no response from the motor. Blower motor has failed and must be replaced for system to operate. - Tech contacted office for pricing information; office will contact the customer with a repair estimate and schedule details. Left power off at disconnect to prevent further issues.

- Tech returned and replaced zone board, transformer, and installed a resettable fuse breaker for testing. System tripped fuse breaker after restoring power. - Tech began troubleshooting for low voltage circuit issues and found upstairs thermostat was shorted on Y call. Checked wires and found no resistance issues; replaced upstairs thermostat and continued testing. Rewired entire upstairs wire configuration, rewired zone board 24V circuit and replaced contactor for testing. No issues observed with both thermostats calling for cool or each one individually. - Ensured proper programming on new thermostat, zone board, and removed testing contactor. - Replaced supply air temperature sensor and wiring harness connecting to zone board. Programmed 40°F low temperature cutoff and 140°F high temperature cutoff. - Confirmed proper fan speed on tap #7, original contactor ohm reading, and delta T measuring 19.7 upstairs and 18.3 downstairs. Tested both thermostats on heat mode and confirm

CMA proposal

Tools pictures and recorded information for a commercial maintenance plan

Technician found thermostat was shorting out when calling for y tech replaced thermostat for testing purposes and new thermostat still shorted out. Technician went up to roof and found no visible shorts or rubbing wires. Technician installed the thermostat wire on the units itself. Thermostat still shorted out. Technician replaced contactor and tested system thermostat was operating and system was operating properly. Technician rewired back existing thermostat and with new contactor thermostat still shorted out. Technician replaced wires at thermostat from y to pink and tested system still shorted out. Tech recommended replacing thermostat wire will require 2 techs due to being on 2nd floor and rtu is actually even to 2nd floor sitting on top of 1st floor roof. Will be very difficult to run.

Technician found no power to smoke detector. Technician checked wiring on smoke detector found no challenges technician did see a splice down the line feeding the smoke detector. Tech inspected the splice found common wire was not wired in. Tech wired in the common wire to the smoke detector wire and s,one detector powered up.

Replace 2 Ton Air Handler With New Trane 2 Ton Air Handler With WiFi Programmable Thermostat

Tech preformed CMA FULL SERVICE on 2 AC Split Systems, 5 Mini Split Systems, 22 Package Heat Pump Systems, 14 RTU Systems and 36 Heat Pump Split Systems. *Upon arrival at beginning of SERVICE tech was told Package HP #113 was not operating. Tech found challenge was a failed blower capacitor. Tech was approved to replace capacitor to get system back up and operating. Tech did advice system was 30 plus years old and had other challenges that needed to be addressed and customer should look into replacing system in near future before any major repairs are needed. *Package HP #111, #121, #318, #417 and #420 are all 30 plus years old. These Systems are operating at this time but some require some minor repairs to keep systems operating. Tech has attached estimates to invoice of required repairs. Tech does recommend customer replace Systems in near future or before any major repairs are needed. *All other Package HP are operating at this time, but some are in need of minor repairs, Tech has

Installed supply grill, capped off 2 gas lines. Corrected wiring on thermostat.

Came out to look at water heaters that need to be replaced. About 10 water heaters will need to be replaced o er the next year . We will have to replace the expansion tank and mixing valve each time. There is 1-120 gallon commercial heater in the basement that will need to be replaced

UNIT #427- 2 TON TRANE SPLIT SYSTEM HEAT PUMP

RESTROOMS- Replace 1.5 Ton Split System Heat Pump With New Trane 1.5 Ton Split System Heat Pump With Air Handler

Found gym condenser in a lock out due to tripped high pressure switch. Cleared code, 450 psi head pressure and 126 psi suction. Condensing coils are dirty, no water access. Maintenance tech is currently onsite performing CMA. System is cooling.

Technician found daikin system low voltage plug was burnt inside in one terminal. Technician bypassed that leg on the plug. System started up no issues.

Tech assisted with compressor swap out.

Kitchen hallway system. Found a blown 3phase compressor along with a damaged compressor plug-in harness. System under manufacturer warranty, tech had office confirm warranty. Estimate will be sent for approval and Mack will call in once it is approved. System is down for now.

Tech washed and serviced system And found no challenges at this time. Tech had no recommendations at this time (system is a year old). System is up and cooling with a delta t of 21.

24v call at unit for Y2 but compressor and outdoor fan not running. Both pressure switches closed, jumped 24v to contactor to run compressor for testing. Pressures within spec, found no issues with wiring. Need to return when able to wire more time to fully diagnose.

Tech preformed CMA FILTER CHANGE on 3 Split Systems. Tech was unable to gain access to 4th Air Handler due to multiple objects and supplies in the way and nowhere to move them to. Tech did find Air Handler #3 is still down due to power issue found during previous CMA Visit.

Tech preformed CMA FILTER CHANGE on 1 Split System and 1 Gas Package Unit.

Tech preformed CMA FULL SERVICE on 6 Gas Package Units and 2 Air Makeup Units. Tech found Air Makeup Units in poor physical shape. The Exhaust section was operating but the Air Makeup section was missing debris filters and one had sizable hole in air duct. Blower’s wheels and motors are in poor condition along with belts. Due to present challenges, Tech does recommend replacing both Air Makeup/ Exhaust Systems. Office will contact customer with proposal at later date. Tech found customer had replaced Gas Package Unit #6 (kitchen) with new Daikin System. Upon inspection tech found that system had 2 Stage cooling but Circuit #2 would not start when Call was present. Tech verified circuit #2 had refrigerant and pressures switches were operating correctly. Tech was unable to locate cause of issue, Tech recommends Demand Tech to further investigate challenge. Tech also found challenge with Gas Package Unit #2 after cleaning system. Compressor Contactor would kick on and off once powered on.