For the apprentices/students... If you come across an air conditioning system with a frozen evaporator. You can't troubleshoot it until the ice melts. Once it melts, ensure the fan is running and in the proper direction, filter is clean, no odd air flow obstructions, no more than 2⁰F across the liquid line filter drier. Only at this point, pull out the gauges to determine if a low charge is present or there is a metering device issue using SH and SC. These are just some basics! Happy HVACing #teachme

Posted by HVAC Know It All at 2022-01-25 15:36:02 UTC