Question about Cfm Daikin R410a Split System Air Conditioner

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

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

cactus bob
  • 267 Answers

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

Posted on Jan 24, 2009

  • 5 Answers

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

Posted on Jan 26, 2009

  • 6 Answers

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.

Posted on Feb 16, 2009

  • 659 Answers

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.

Posted on Mar 21, 2009

  • 1 Answer

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

Posted on Apr 20, 2009

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1 Answer

Why does the split unit blow hot air in air conditioner mode, when switched on with the remote control.


because you have the temperature set at 28 degrees celcuis . Change the temperature to 18 degrees and it will cool 28 is hotter
It is a reverse cycle air conditioner it will warm the room if you set temperature to 28 degrees . Set it lower and it will blow out cold air.
Have exact same air conditioner as I recognise the remote control.
point it at the air conditioner when altering the temperature setting.
Check under the slide compartment also on the remote for more advanced settings.

Jul 02, 2015 | Cfm Daikin R410a Split System Air...

1 Answer

Error message U4


Signal transmission error. Indoor and outdoor PCB's cannot communicate. Usually a faulty controller board in the outdoor unit. If the indoor unit otherwise functions normally (can control fan speed, louvres, beeps in replay to all remote buttons) then it is probably OK so check outdoor controller PCB.

Jul 21, 2014 | Daikin Mini Split Concealed Duct Units

2 Answers

What is and how is find out cfm for 5ton air conditioner


12000 BTU is 1 ton
300 - 350 CFM in 1 ton depends on mfg.
Cfm and Tonnage of Refrigerent is are different units, then how these two units can be compared

Cfm means air flow per cubic meter per hour.

Dec 14, 2010 | Cfm Daikin R410a Split System Air...

4 Answers

U4 System transmission between indoor and outdoor units Daikin


Sounds like an interconnecting wiring error. Check wiring connection i.e. wires are connected in right order 1 to1 2 to 2 etc. from indoor terminal board to outdoor terminal board. Also check for slack or loose connections.
Hope this helps I take the time to answer your question so please rate me

May 28, 2010 | Cfm Daikin R410a Split System Air...

1 Answer

Hi, i have 2 daikin air conditioning unit, 1 is working perfectly but when the 2nd is turned on the power light just flashes and nothing happens, any ideas thanks.


The flashes are codes for different problems the unit may have, count the flashes and check your owners manual this will tell you the problem and the solution, or turn the breaker off for 5 minutes and re-start the unit this will reset it the unit should work if the problem start again you will need a service man. hope I was able to help you.

Nov 27, 2009 | Cfm Daikin R410a Split System Air...

1 Answer

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.

Feb 16, 2009 | Cfm Daikin R410a Split System Air...

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