Incorrect Drain Installation by AirProsusa.com
This is the Original and Before Drain Configuration. This configuration is presenting the following problems:
#1 The negative pressure from the blower is drawing attic air into the system through the open drain. This negative air flow is preventing the condensation from draining out of the unit and the air is holding the condensation back.
#2 This large amount of condensation is now inside the primary pan, filling up the float switch and shutting off the hvac system.
#3 After the system shuts down and the blower shuts off from the tripped float switch, the condensation is now draining into the trap. But because of the tilt on the air handler there is still residual condensation in the float switch and the float switch will not reset automatically.
#4 There is no Vent T after the trap to allow the condensation to drain properly. This setup can also cause a syphon effect which will drain the p trap.
#5 There is no pipe dope or sealant on the pvc threads and condensation is leaking out of the connections.
#6 The customer stated the installing company has been out 7 to 8 times but can't find anything wrong...
(( SEE THE NEXT IMAGES AFTER THE REPAIRS ))FLOAT SWITCHPTRAPCONDENSATION DRAINAIR HANDLER DRAIN CONFIGURATION
CORRECT DRAIN INSTALLATION, Start to finish
#1 Completely removed and disconnected the drain.
#2 Installed pipe dope on the pvc threads.
#3 Repositioned the float switch.
#4 Blew out stopped up trap and condensation drain.
#5 Plugged overflow on primary pan
#6 Install Vent T in primary condensation line
#7 Flushed primary line
#8 FOUND Additional issue, the primary line is draining slowly at lavatory sink inside home. Customer will get plumber to disassemble and clean.
Completed repairs
