The team did a great job servicing the air conditioning units.
Overall Experience
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Performed a heating pm on an oil boiler. Brushed and vacuumed. Replaced the oil filter, nozzle and strainer. Started and checked the safeties. Performed a combustion test. 5.2%o2, 4ppm, 0smoke, 83% efficient System is operating properly. When arrived, the pressure relief valve was dripping with the boiler pressure at 20 psi and slowly increasing to 25psi. Checked and found the extrol tank is bad. The is water on the air side of the tank. When the water heats up, there is no place for it to expand. Recommend replacing the #60 extrol tank and pressure relief valve. Drained pressure from boiler and replaced the #60 extrol tank and pressure relief valve. Filled the system and tested. Noticed that the automatic water feed I did not stop and is slowly adding water to the system. Shut the valve next to it. The system is at approximately 15-17 psi. In the future, recommend replacing the autofeed.
Washed all filters Inspected all indoor coils and blower compartments Checked all heads in high heat mode Living room 115 supply Left bed 119 supply Right bed 118 supply Checked and tested drain lines Checked electrical connections and safeties Rinsed condenser coil While on property indoor heads started flashing 76 error code indicating outdoor unit operating valve thermistor error. Contacted tech support and found that the thermistors at the condensing unit had gone bad. Replaced thermistors and started unit. Unit started up with no issues and was not flashing any codes. Unit is working properly Recommend cleaning blower compartment in master bed