Air conditioning - Any recommendations please??

Status
Not open for further replies.

Jmathew1108

Member
Joined
Oct 30, 2015
Messages
481
Reaction score
2
Hi, complete noob at aircons and seeking advice from experts here if possible:
- Staying in resale flat for about a decade, it came with Daikin aircons already installed: 3 same model FCU (FT2531V1) in 3 rooms + 1 bigger FCU in living room, only 1 compressor dunno what model or capacity. No idea BTU rating for the FCUs, but remember was told cannot switch on all 4 FCUs at same time. Not sure when aircons were installed but I'm already 3rd owner, so these aircons must be antiques!

- Know it runs against common advice but since we don't like sleeping with aircon so they were rarely used. Recently one of them finally conked out, no response to remote or only can on for few seconds to at most 1 hour. Even turned on by itself before. Now completely no response. Got someone from aircon servicing company to take a look, he said the sensor controller or something like that (where there's led light turned on when you press remote) needs to be replaced. His office said they will source for it & inform us but already quite long and still no news. So thinking about options to solve problem.

Questions:
- Can a single FCU be replaced in this situation? Room size is about 17sqm or 185 sq ft, so 9000BTU FCU sufficient? Budget constraint so not thinking about changing the entire system at this point.
- Can only use back Daikin or also other brands?
- Can reuse old piping or need to replace piping & hack walls? Understand old & newer systems use different coolants that are incompatible?
- I see that Sys 1 comes with its own compressor, so does it replace my old compressor or how?
- Any other things to consider?
- If replacing a single wall-mounted FCU is not very cost effective or is complicated considering all the factors, any use to get a portable aircon instead?

Sorry for being long winded. Hope to get some good advice & suggestions, appreciate all your help and thanks in advance.

I think your aircon should be a non inverter R22 system. Actually for non inverter systems it is very easy to replace the indoor unit as you can use any brand non inverter fan coil to replace the spoilt one. But daikin non inveter are very popular so should be no problem finding a replacement daikin.No need to do anything with the piping, just remove the old one and put in the replacement. Important thing is to ensure that the replacement is non inveter and runs on R22 coolant. But do note non inveter aircons have been mostly phased out since 2013 so you'll need to settle for a second hand refurbished unit as you pretty much can't buy a new one anymore. You can call up those companies that deal with second hand aircons and they will be able to assit you find a suitable replacement Fcu. Also second hand means the cost will also be kept to a minimum. I also don't use aircon much and my carrier non inverter system is more than 20 years old and when the original compressor died we changed to a sanyo one and it works fine till today. No need to change to a new system unless you really want to.
 
Last edited:

badbad2000

Member
Joined
Oct 24, 2005
Messages
461
Reaction score
11
Hi, would like to ask for opinion. My living room aircon now no longer cold. 1 month+ ago ask to check and feedback as the gas is empty, have gas leak, so he advised to replace new but he didn't say is pipe leak or the aircon yet he said will need to replace whole thing. My aircon is Fujitsu more than 5 yrs old. Do I still ask for service or just replace new because now have the led flash said current trip error.

If recommend to change, can recommend a brand? Is those auto cleaning feature really works?
 

badbad2000

Member
Joined
Oct 24, 2005
Messages
461
Reaction score
11
how is Samsung AR series aircon, look like a lot of features. LG hv 10 years compressor warranty now.

should I go for gain city, nataire or bestdenki with the cc rebate?
 

tanjhj

Supremacy Member
Joined
Dec 14, 2000
Messages
5,384
Reaction score
33
Hi, would like to ask for opinion. My living room aircon now no longer cold. 1 month+ ago ask to check and feedback as the gas is empty, have gas leak, so he advised to replace new but he didn't say is pipe leak or the aircon yet he said will need to replace whole thing. My aircon is Fujitsu more than 5 yrs old. Do I still ask for service or just replace new because now have the led flash said current trip error.

If recommend to change, can recommend a brand? Is those auto cleaning feature really works?

fujitsu quite problematic and ex spare parts. i susggest change to mhi n change ur trunkings and cables n pipes.
 

jason910

Master Member
Joined
Jan 15, 2002
Messages
4,650
Reaction score
4
Can I ask is the MHI with the upgraded btu uses more electricity then others? E reason I ask is because when I went to gain city and those Neighbourhood shops this is what they told me. The electricity consumed even more on the upgraded btu with MHI.

fujitsu quite problematic and ex spare parts. i susggest change to mhi n change ur trunkings and cables n pipes.
 

DarthGW

Arch-Supremacy Member
Joined
Nov 21, 2001
Messages
19,339
Reaction score
12
Can I ask is the MHI with the upgraded btu uses more electricity then others? E reason I ask is because when I went to gain city and those Neighbourhood shops this is what they told me. The electricity consumed even more on the upgraded btu with MHI.

just wait for the 9k btu stocks to come into singapore.
 
Joined
Jun 12, 2001
Messages
383
Reaction score
0
Hi Bros

Anyone has any suggestions to make this look better? Not looking to hack and replace the tiles. Should I make it shorter?

Thanks for input.

34xes28.jpg
 

UptheToon

High Supremacy Member
Joined
Mar 6, 2008
Messages
31,838
Reaction score
1,661
Someone quote me sys 3 upgrade to g22 at 30$ per fan coil. 1 compressor got how many fan coil? Mitsubishi one.
 

serverxeon

Arch-Supremacy Member
Joined
Mar 29, 2003
Messages
14,332
Reaction score
11
Can I ask is the MHI with the upgraded btu uses more electricity then others? E reason I ask is because when I went to gain city and those Neighbourhood shops this is what they told me. The electricity consumed even more on the upgraded btu with MHI.
Avoid the free upgrade to 12k btu, if your room is only sized for 9k btu. Reason, slightly higher energy consumption and higher-than-ideal humidity levels.

Sent from A380 using GAGT
 

jason910

Master Member
Joined
Jan 15, 2002
Messages
4,650
Reaction score
4
Thanks I think the 12k btu is energy consuming and overkill for the HDB rooms. I'm still undecided to go with the newer aircon with Brand’s like Daikin Panasonic or Mitsubishi.

Avoid the free upgrade to 12k btu, if your room is only sized for 9k btu. Reason, slightly higher energy consumption and higher-than-ideal humidity levels.

Sent from A380 using GAGT
 

petetherock

Moderator
Moderator
Joined
Jan 7, 2007
Messages
8,252
Reaction score
135
Thanks I think the 12k btu is energy consuming and overkill for the HDB rooms. I'm still undecided to go with the newer aircon with Brand’s like Daikin Panasonic or Mitsubishi.

12k might be useful for the MBR, but not really needed for the other rooms, especially in the modern flats with smaller rooms.
 

keenklee

Senior Member
Joined
Sep 9, 2000
Messages
2,321
Reaction score
250
Can I ask is the MHI with the upgraded btu uses more electricity then others? E reason I ask is because when I went to gain city and those Neighbourhood shops this is what they told me. The electricity consumed even more on the upgraded btu with MHI.

In my calculation, MHI 9k vs 12k difference is about $15 per month.
That said, it depends on factors like the cooling requirement and location of the room.

E.g. they could be people who "die die" want 20 degrees during day time. :s13:
 

Iceman88

Member
Joined
May 8, 2008
Messages
101
Reaction score
0
I think your aircon should be a non inverter R22 system. Actually for non inverter systems it is very easy to replace the indoor unit as you can use any brand non inverter fan coil to replace the spoilt one. But daikin non inveter are very popular so should be no problem finding a replacement daikin.No need to do anything with the piping, just remove the old one and put in the replacement. Important thing is to ensure that the replacement is non inveter and runs on R22 coolant. But do note non inveter aircons have been mostly phased out since 2013 so you'll need to settle for a second hand refurbished unit as you pretty much can't buy a new one anymore. You can call up those companies that deal with second hand aircons and they will be able to assit you find a suitable replacement Fcu. Also second hand means the cost will also be kept to a minimum. I also don't use aircon much and my carrier non inverter system is more than 20 years old and when the original compressor died we changed to a sanyo one and it works fine till today. No need to change to a new system unless you really want to.

Thanks for your advice, will certainly look into this option as wasn't aware before of companies selling 2nd hand aircons since in S'pore all the focus is on new aircon systems.

By the way, wonder if anyone can verify this. I made casual enquiries at Gain City and a Daikin Pro shop and was told that if want to only replace one FCU (indoor unit) in an old system it is not allowed/not possible for HDB flats but can be done for landed property owners? So if HDB dwellers are suay to kena one unit spoilt have to bite bullet to replace the entire system? Can experts here verify that is true? Or simply the talk of salesmen who only interested in selling multi split systems?

Also, if old system is like System 4 (3 bedroom + living room) and if replace must replace System 4? If feel living room unit is redundant, can I choose only to have System 3 for the bedrooms? Appreciate your advice, thanks.
 
Status
Not open for further replies.
Important Forum Advisory Note
This forum is moderated by volunteer moderators who will react only to members' feedback on posts. Moderators are not employees or representatives of HWZ. Forum members and moderators are responsible for their own posts.

Please refer to our Terms of Service for more information.
Top