Technology in all our lives continues to improve and increase our quality of life. Air Conditioning systems are no exceptions. When the technology advanced, we embraced it live and up to our company name: Advanced Cooling Systems. If you want your Air Conditioner to have the most advanced features and functionality, we are the ones to get the job done. At Advanced Cooling we have a firm grasp on these technologies and you can too, just read on.
Understanding the Logic behind the electronics
Thermostat Control Logic
Compressors have a rest period (5 minute delay) from the time it shuts down, until it is allowed to run again. A cycle is the time the compressor is on and the adjacent time which it is off. Short-cycling is when a struggling unit turns on and then shuts down quickly (in seconds). Staging logic determines a Load Value based on the temperature change over time, after the inhibits are met it can then switch to 2nd stage and/or increase airflow.
Leaps ahead in technology is the Trane variable speed system. As a day warms it starts up and runs all day at the exact capacity needed to keep your home cool. Since is runs all day it dehumidifys all day. This lower capacity running uses over 50% less electricity than last generation on/off units.
Dehumidification logic has be around a long time in our area. Variable speed blower motors started in 1987 and allowed a simple program to operate that held the blower motor to 50% speed (slower air over the coil dehumidifys quicker) to dehumidify for about 8 minutes, then running full speed and capacity to cool the area. The “Florida Logic” allowed a further 20% reduction over all speeds to further increase dehumdification, but also allows full speed operation after the inhibit time expires.
Air Handler Control Logic
The external display shows the current operational mode, while the lights flashing through the window (center left of air handler) give further immediate health information. A Trane certified technician can use the display controls to set operation variables or to monitor the current operation of the system without removing the door. Nexia linked thermostats will also have the option to have this current and historical data securely available to the customers chosen dealer. Among the data available is 3 strategically placed temperature sensors, metering valve position, blower RPM, CFM, and calculated pressure in duct system.
Freeze logic is able to modulate the compressor running so that even if there is something drastically wrong, the unit is able to keep the coil thawed and use the icing up to cool your home.
Metering Valve (EEV) logic. With careful monitoring of coil temperatures, the EEV can be controlled supply more refrigerant when extra heat needs to be carried away.
Air Flow (AFC) logic. AFC constantly monitors blower RPM and amp draw. It uses precision calculations to pull air harder as it calculates your air filter is getting dirty and limit itself to prevent electrical damage.
VX Variable Speed Control Logic
Starting in 2013 Trane moved their high end product to Variable speed compressor technology (They had tried in the mid 90s but service technician were not up to the task and replaced many expensive components that had not failed). The redesigned technology has an array of 4 temperature sensors, refrigerant pressure sensor, EEV metering valve, latching switch over valve, high pressure cut out, outdoor diagnostic display, temperature controlled single board control unit with upgradeable onboard firmware. Inverter compressor capable of running 900- 6000 RPM cooled with an EMC fan motor running 200 – 1200 RPM.
The firmware algorithm used to control this system was comprehensibly tested and has worked incredibly well. We started installing them as soon as they were available. Due to the many speeds and modes they operate in, the unit can sound different every time you walk by. They run a lubrication cycle (speeds up) every time they run 20 minutes continual low RPM. Oil return mode (refrigerant contains oil) runs when the unit runs slow over several cycles. Limp mode runs when a sensor fails and it can use an alternate sensor to stay safe. All the parts that used to commonly fail (contactors, capacitors, defrost boards) are not used in this design.