6/6/19--Checked the 15 ton Goodman Rtu for the dining room for not keeping up. Found two of the three condenser fans not running with the compressors cycling on high pressure. Found the center motor with open windings, the East motor with seized bearings and the West motor running with worn bearings. Drilled holes at the bearing housings on the East motor and freed the bearings with penetrating oil for temporary repairs. Was able to get two of the three motors running till the motors can be replaced tomorrow. Blocked the center fan housing to stop the condensing air from bypassing thru the failed motor. Unit is cooling normal with two of the three motors running. Also checked the 18,000 btu goodman split for Liz's West office for no cool. Found the system low on charge. Added 2# R-22 to the correct charge. Will return tomorrow to replace the three condenser fan motors when the motors can be picked up and delivered. 6/7/19--Replaced the three condenser fan motors and capacitors in the G
Checked the ten year old LG 3.5 ton mini split for the kitchen for not maintaining temp after adding 2# of refrigerant on 4/22/19. Found the system low on charge. Leak searched the system. Found the leak in the indoor cassette evaporator. Recommended replacing the system do to the age and condition. Sent Zach the info for quoting.
Added low ambient controls to the two ton split for the Kitchen too prevent evaporator freeze ups. Verified operation after repairs. Repairs were approved by Harry Frazier.
Reassembled the ceiling cassette for the 3.5 ton LG mini-split after the maintenance man cleaned the plugged evaporator. Started the system and checked the operation. Added R410a to the proper charge. Evaporator split was 20 deg after repairs. Repairs were approved by Harry Frazier.
Checked the LG 3.5 ton mini split for the kitchen for no cool. Found the unit running with a 7-8 deg split at the ceiling cassette. Checked the condenser and found the compressor amps low at 4.5 amps on a 13.7 rating with the superheat 12 deg. Checked the evaporator coil in the cassette and found the coil plugged causing poor air flow and heat transfer. Recommended cleaning the coil before any other diagnostics are performed. The poor air flow thru the coil will cause the evaporator thermistor to keep the compressor from ramping up. Disassembled the cassette to ease the cleanig for the maintenance man. He will call for further diagnostics if the cleaning does not improve the performance.