Daikin ducted split air conditioning unit, The F2U fuse keeps blowing, why?

BOB BROWER

• 267 Answers
• Posted on Jan 24, 2009

SOURCE: fuse blowing on tappan air handler

most of the time its out by the ac unit . you have a shorting thermostat wire .. the outside unit has a large wire thats 240v and a small one that 24v thats the one you want to look at . look for bare wires , look where it goes into the wall , thats the common place . "critters" love to chew thermostat wire . so take a look . .....please rate this answer , i need votes . thanks

SOURCE: Blueway split system wall air conditioning doesn't work properly.

need to add refrigerant
need to check wheather the ampere is the same on the name plate
check the room temp. setting
check the setting of the timer

SOURCE: fan coil unit won't cool or heat in room1 while room2 runs well

could be undercharged, or overcharged, or wires weren't put back on valves in unit.

SOURCE: daikin split cycle air conditioner FTXD50J heaps

You will need to find where the unit is clogged and try and run something up through to snake it out. In regards to the whistling noise, this is usually caused when there is debris that has collected and the air is trying to be sucked through a previously open area. You may just need to do some general maintenance on the unit. The motors are sealed so there isn't any lubrication points on the motor. Follow the instructions from your owners manual and it can be found on the Daikin website. Sometimes it takes a few minutes to find the manuals but you can usually find them. I have been on the Daikin website so I know they are there.

SOURCE: I have a dometic duo-therm. No air coming through ducts.

I have a new Montana Mountaineer with a Dometic Duo Therm as well and experience something similar.

It appears that there are two options:
1. Open the vents in the unit and all the cold air will blow out of the AC as that would be the shortest path and the there is hardly any air coming out of the ducts.
2. Close the vents in the unit and it will force all the air through the ducts.

We let the air blow straight out of the unit during the day and then force it through the ducts at night to force it in the bedrooms. You could also open the vents in the unit part ways to get a combination.

I didn't figure it out immediatly either, but just look close at the unit and you can see that you can close the vents on the unit itself