We have a 9 year old Daikin heatpump. The compressor unit was making loud noises, but the indoor unit was heating as usual. The electrician installed new fan. He then turned the heatpump on, but it wouldn't work. He now says that we need a new circuit board. We are concerned that something happened when he replaced the fan, which damaged the circuit board. Is this possible, or is it just a coincidence that the circuit board happened to cease operating at that time? He has checked that the new fan was the correct model. Any help would be appreciated. Thanks,
t_naki,
Apr 28, 1:27pm
It world be more likely that the board has gone and the fan he just replaced was fine. But more likely would be a fan fault has caused the fault in the board. Without physically looking it is impossible to say for sure.
gpg58,
Apr 28, 3:03pm
Was very common when i was working with daikin product, for outdoor boards and sometimes indoor board as well, to die when replacing any other components. The manuals advise you on how to bleed any power out of capacitors before unplugging anything, especially fans. Unfortunately doing as they say (soldering iron or similar load across caps on pc board or power off for a stated time) often did not prevent killing boards and also fan motors(you hear a quiet click when unplugging fan, that's it and board dying). Usually, in my own experience, all boards will need replacing, as they have no protection on each, so replace the wrong one, or if more dead, the others will kill the new replacement, becomes a very expensive process.
Not really the sparkies fault, "If he did attempt to bleed caps as advised", it was for these type of issues (among others), that i will not repair daikins and therefore always "Recommend Replacing Complete System" with a better more forgiving system.
Personally i stick to toshiba, which in my opinion is by far the best overall, and at least you can replace only indoor OR outdoor if needed, it is not compulsory to do both at once. Any toshiba indoor will drive any toshiba outdoor, regardless of even being mismatched size wise (must be rated for same gas though). I currently have a ras 24 outdoor running happy as, on a ras 16 indoor, and a ras 13 outdoor on a ras 16 indoor(for over 3 years).
jenny791,
Apr 28, 4:12pm
thanks for replying. I chose Daikin as Consumer recommended them. To replace our whole system will be costly, as we have three heat pumps operating off the single compressor.
gabbysnana,
Apr 28, 4:20pm
three? The units have a five year life. So you have done well to have 3 off one compressor.
gpg58,
Apr 28, 4:21pm
Probably a good idea, to ask for a written quote, "stating", to get system back working. Thats why i do not recommend multi systems, you lose one outdoor, and you lose all your heating.
jenny791,
Apr 28, 9:35pm
Thanks for the advice. I think I will be installing new individual heat pumps.
gpg58,
Apr 28, 10:19pm
Being a multi system, perhaps It may be possible to just replace your outdoor unit with a new one, and get a full term warranty on it (only). Best ask daikin or local distributor if they will do this, as it would be a better outcome than paying for getting yours fixed, with no subsequent warranty on the rest of the unit.
It is not all that unusual, to see 20+ year old systems (of most main brands) still going fine. But do compare cost of new separates before deciding which way to go.
jenny791,
May 4, 11:25pm
The three indoor heaters are not compatible with the new compressor that we need., so we now need to change everything. Perhaps it would be better to have three separate compressors. It's very annoying as two of the heaters have had very little use.
gpg58,
May 4, 11:35pm
Yes i think 3 systems is always best. Pity really that it is daiken, as even the multi system toshiba indoors, work fine on any series of outdoor, so could have had separate outdoors retro fitted. The other advantage with separates is, you do not loose all 3 units heating output during defrost operation, as usually they will defrost at different times.
bill1451,
May 8, 8:36pm
Brrr I think if I lived in Gore I would own a log fire, a chain saw, and a can of 2 stroke fuel.
jenny791,
May 9, 8:10pm
Actually our climate is pretty good. i love our crisp frosty winter mornings and fine days. I'm a bit old to stack firewood, so will stick with the heatpumps. Have found them very economical and efficient.
supernova2,
May 9, 10:31pm
Would the CGA be any help in this case. I think, given the cost of a big instal like the OP has, that it should have lasted longer than 9 years. The indoor bits are still OK so why should the outdoor bit be unrepairable thus rendering the complete thing a piece of junk? As other posters have said it not uncommon to have HPs that are 20 or more years old still happily chugging along. Might be worth the $50 DT fee to try it?
timbo69,
May 12, 11:36am
A damaged fan could cause damage to the board.
trade4us2,
May 12, 11:53am
With these regular heat pump problems I wonder about the economics of heat pumps. They cost a lot in the first place, and the installation cost is also a lot. I can buy 2kw electric heaters for $20 or $30, and plug them in free!
timbo69,
Nov 11, 4:05pm
True, but they also have great control, can cool and not on the floor to trip over.
Since the public registrations are closed, you must have an invite from a current member to be able to register and post in this thread.
Have an account? Login here.