upon my arrival to do a diagnostic service call on a air conditioner tenant advised me that system was running intermittently. I Checked condensate drain and found partially plugged. This was causing the float switch to cut power to the furnace. I Blew out condensate drain and restarted furnace. I Allowed it to run approximately 15 to 20 minutes with no further issues. This was our install. I'm Not charging for diagnostic. At time of my departure system operational.
