You can connect directly to the PCB using optional cable(s).
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You can connect directly to the PCB using optional cable(s).
Marc you must be enjoying this one?!
I agree you can put a service checker on your split,.
Have you had the slave unit running with any of the boards?.
Just been looking at this post. Since i posted last time Daikin sent out a new indoor board but it was the wrong one. Then they sent out the right board but i have been busy all week in london so they sent another guy to fit it but when he got there to fit it, the controller started flashing up a fault code. When he rang daikin they told him that another part should have been sent that clips onto the board but it wasn't in the box...... It's becoming a joke.
So now we have to wait until this connector is sent for plugging onto the board, then we will have another go:mad:
I dont have a service checker but i agree it would be useful. How would i try and get one of these? Can they be bought from diakin?
I haven't had the slave unit running when the boards have been swapped but i have had the slave unit running when i swapped the controller over from the master onto the slave.
The part that Daikin did not send is a little resister to tell the new pcb the size of unit it is fitted to,
Could there be a wrong setting used that is causing the issue with your slave?,. I think it would really help if we treated it like a new install and started at the beginning.Have you seen or got the wiring diagram for the system?,.
Im sure we will get there in the end,,.
There are the usual wiring diagrams on the back of the electric covers on both indoor and outdoor units. I haven't seen an operational manual for it though. I'll probably be going back there on wednesday when the "resister" arrives
Just an update on this, i have thrown in the towel and admitted defeat:confused:.
Went today to fit the new board, fitted it and turned the controller on, which did clear the fault but the slave fan still didn't come on.
Checked the settings on the controller and set 21 to 0-02 meaning that it's a twin. Turned power on and master fan ran but the slave didnt, also the compressor didn't come on or the condensor fan.
Checked power to the indoor board and the power comes in on x27a then goes through x25a (which is the lift pump) then comes back out onto x20a (the indoor fan) checked for power and there was poer at x20a but the fan wasnt running.
Swapped the fan motors over but still the slave fan wouldn't come on. I then disconnected the controller from the master and wired it into the slave and turned it on and the indoor fan started, which proved the motor is ok. I also disconnected the external pumps that had been wired into the unit instead of into a fused spare but that made no difference either.
I spoke to daikin and to be fair they tried everything but were stumped, they kept taking me through all the settings on the controller to be sure the system was recognising 2 indoors- which it was but still the indoor fan won't come on when wired as a master and slave with 1 controller. Also the compressor didn't start once in all this time that i had it on.:mad:
Can you explain what you mean by this?
On a twin split, the 3 core + E connects from the outdoor unit to the first indoor unit and then to the second indoor unit.
The controller, P1 P2 connects to one (any) indoor unit only. Comms between the indoor units is carried out via interconnect 3 (on R410A systems). There is no Master/Slave configurations to do.
Have you checked out the interconnect wiring for crossed wires?
When you go into the settings on the controller it eaithe says 0-01 or 0-02 meaning its either a split or a twin. This had the setting of 0-02 meaning the controller recognised that the sytem was a twin.
Yes that's right, to the master first then through to the slave unit. The controller is wired into P1 P2 in the master unit.
They should configure themselves manually i was told when the power supply is turned off the turned back on. When i first went to it today and changed the board the setting on the controller on setting "21" was 0-01 meaning it was set up as a split not a twin.
Checked for crossed wiring and for any breaks in the cable.
There is no such thing as defeat!!!, Have you tried using a controller on each unit or just a different controller?,
Can you wire each unit as a single split and test run, will this help pinpoint your problem(s)?
I have also tried this but the outdoor wont run because the capacity is too large with only 1 indoor connected up.
This is a strange one! Maybe you have already tried this but I thought I would suggest anyway. Switch the power off to the system and connect the remote controller to the slave unit and enter service code 11-0-01. Power the system off and connect to the master unit and set the same service code 11-0-01 this would mean that as far as both indoors are concerned they are stand alone systems as they would be from the factory. Also when you have the controller connected check mode 41 and read the two sensors return air and coil. Cant help feel that it will be someting silly thats wrong here!
Daikin have agreed to come out to have a look at it but on the 30th of June (next monday). I'll be meeting them there to see what the fault was.
It will be something simple, i know it but i can't find it:confused:.
I'll let you know when i find out so nows the time to have a guess and lets see who is right.:D
hi there well i would say outdoor boards replace them :o cheers and good luck
I'm saying faulty remote.
sounds like it is not saving that it s a twin not a split to me.. dunno whose fault that is ? is that the control or indoor pcb ? :) as both units fans will go when it is master. if you set it then go back has it saved ? and could it have reverted back to factory settings (single split) when powered down for so long while you where reclaiming refrigerent, good luck be interested to hear what the problem is
Just my tuppence worth - The address setting can be cured if you put a controller back on both units and clear memory. Then set them up as twin unit again - Daikin engineers can talk you through this. Just reseting power doesn't work. As for the fridge side of things ie seems to be pumping down on start up I had a similar problem recently. I tried blowing through with nitrogen no problems but still blocking when started up. Turned out to be the strainer located just before the EEV that was partially blocked. Replacement solved problem. Hope this helps.
Oh and I agree - there is no such thing as defeat!!!
Update, The Daikin engineers arrived today and were as baffled as i am, they checked everything that i had previously checked- inteconnecting wiring, mains wiring, fan motors, boards, thermisters , controllers etc. They were on the phone for hours to their bosses going through the settings on the controllers.
What i did notice is that when they altered a setting on the controller sometime the "UA" fault would appear, now to get rid of this it was just a case of returning the setting to the original one and the fault would go. So now i'm thinking that maybe the new board that i changed didn't need changing it was just that i put a wrong setting in that Daikin gave me.. all i would have needed to do is change the setting back.
Next he set about trying to run them individually so he disconnected 1,2 and 3 from the master baord and wired straight through onto the slave unit. He then powered down then powered back up, waited for the "88" to disappear and the controller came on on cooling 16DegC but the indoor fan didnt run. He was miffed and couldn't understand it, so i went into the settings on the controller and found 21-2-02 which he had altered. I changed this to 21-2-01 and straight away the indoor fan came on. By this time it was 5.30pm and after speaking to his bosses they have suggested that the other indoor board (the slave) gets replaced. I'm not confident and i told him but he's sure thats all it can be.
The part will be ordered tomorrow and hopefully it will be delivered on Friday , when i will be able to go back, again!
Bet the customers wishing they'd paid for decent gear now like an LG! :o
Went back to site the other day and fitted the new board so we have changed both master and slave indoor PCB's. As soon as the board was connected it started up and then brought on the compressor and began to start cooling, pressures looked fine and air off each indoor was 11DegC.
Problem solved- still dont understand it though:eek:
At long last.
hope the customer is happy.
Bet your glad to be clear from that mightmare.
Yes i sure am, just disapointed that i didn't manage to solve it myself:mad:
Did you check the back of the PCB for dry joints in the end as I suggested in my earlier post? Honestly I've had this plenty of times when replacing boards from Daikin (new from factory).
If so, check the solder joints of all relays, this is where I've previously found problems.
Fault conditions include external fan defects, and intermittant comms faults. With the vibration of the outdoor unit, you'll find it will occasionally make contact and all will be well, thus intermittant and very hard to trace. Not good at all.
Glad things appear to be resolved either way.
Marc just read the thread. you had any joy yet? sorry no help but very interested to no what happened
id get a daikin engineer in , then it would be his problem !
The great Daikin Board change dilemma !
How many times have we had to do that one :lol: Glad its all sorted now, really feel for your customer though, as we have been there many times, using Daikin kit in the past.
New Boards all round are normally the order of the day :(