View Full Version : Daikin Ducted FCU

29-09-2016, 11:55 AM
Has anybody had any issues with Daikin FDQ 250 B units? We installed 180 last year, and have recurring issues with Condensate leaks. We've tried everything obvious. Water is getting into the fan section, and leaking out (obviously).

Slim R410a
29-09-2016, 12:45 PM
Have you installed traps on the drains and are they sized correctly for the static pressure of the FCU's?

29-09-2016, 08:35 PM
That seems strange as the fan section is behind the coil so should be at a lower pressure than the outlet

If the condensate is flowing back it must be because there is excessive condensate.

Possible causes are lack of drainage or cracked drain pan

03-10-2016, 02:13 PM
Isn't the fan section in front of the coil on the 250, therefore you would need to trap the drain?