Toshiba Split Problems

[paulrs86]

Hi guys

i have 3 toshiba splits all linked with 1 hard wired remote.

it has a external box which is time switch interface.

my problem is i cant get the controller to turn on but if i go to each indicidual fan coil and wire the remote it will work. i think its also wired into a bms but the site tsa says that its active and there should be no problems being able to turn ac on.

look forward to your feedback

[paulrs86]

just to add this is not a new install its an old existing one.

[nike123]

Start with posting units model numbers!
Toshiba makes lot of systems.

[paulrs86]

indoor model RAV-464UH-PE
Time switch interface model RBC-IT2-PE

couldnt get models of condensers as the plate has worn.

[paulrs86]

r407c is the refrigerant

[install monkey]

most informative
http://www.mediafire.com/download/rb...s_controls.pdf
tosh controls info- click on link above

r407c is the refrigerant

[paulrs86]

thanks but i cant even get the thing to turn on. ive tried disconnecting the time switch interface but still does nothing

[nike123]

The remotecontroller on/off button will be overridden whenever an interface is connectedto socket CN06, regardless of whether the RBC-IT2–PE is in use or not. Allother functions of the remote controller remain unaffected.

http://www.carrierafrica.com/toshiba/Controls/Installation/RBC-IT2-PE.pdf

Also, check red boxes!

[paulrs86]

What red boxes would they be mate?

[nike123]

Red TEXT boxes!

Ensure that the electrical feed to the time clock is the same electrical phase as the “L” terminal on the single phase units or “L1” on the three phase units. These terminals are the single phase derivation from the outdoor unit in each case. Zero voltage should be measured between terminal 1 of the Type T2 and terminal 1 of the indoor unit when energised. If 400 V.a.c. is detected between these two terminals it is essential that the unit is isolated and the correct phasing is determined.

[paulrs86]

Yes that is how its wired but still nothing. Ive even disconnected the power cable and plug in on cn06 but no joy. Im not gettong any voltage on terminal 1 at master condenser but have got 3 phase lower coming in

[nike123]

So you are saying if you fully disconnect BMS and Toshiba timer RBC-IT2-PE from indoor units terminals (all 3 units separated and independent) you still cannot switch ON any of 3 indoor units with their infrared wireless remote controller.
Did I correctly interpreted what you are facing with?

[paulrs86]

Right found the problem it was reverse phase protector touching down to back of unit. Swapped it from another condenser and all working now