During this visit the system that serves the board room was locked out on an “EE” error code. This error indicates a clogged drain, failed condensation pump and/or a water level sensor failure. The indoor cassette was disassembled to access the drain/water pump and float switch. The drain was opened and cleared on both sides of the drain using a shop vac. A new 3/4” fern was installed for the purpose of cleaning the drain. After the drain line was cleared water was used to flush the drain pan. The system was restarted and the water level sensor and the drain pump were both checked for proper function. While the system was operating I set the time and date on the kids library thermostat. (System #5). After the thermostat was set I returned to the board room to check for leaks and confirmed that the system is pumping water by checking the water level in the evaporator drain pan. The system has returned to normal function. Thank you, Jon Tech notes: m/n 40MBCQ24 - - - 301 -