Hi Dana, it's just amazing that next only yesterday I fitted a 4-Way BS Box on Daikin VRV3 System as we are carrying out some modifications to an existing system. Your video came at the right time. We have to pipe up the new BS Box next week. Thank you so much for sharing this very important information with us, it's really a great assistance. We are here in the UK. The BS box we are fitting is for a VRV 4 system and is compatible with the VRV3 as well (Daikin). Watched many of your videos. Thank you once again.
The vrv3 outdoor will likely need a board swap to make it compatible with vrv4 branch boxes. At least here in the states they are not compatible by default with vrv3 systems. We have to upgrade the vrv3 with a new board to allow the integration to occur. Glad this helped you at the right time!!
@@InverterAlways feel free to ignore this, but quick question…. Got x3 separate RZQ200 systems serving 10 fan coils. (x3FCU-x3FCU-x4FCU) Previous engineer has piggybacked them all onto x1 BRC1E controller. Problem is, I have a C4 fault (liquid therm) but because it’s 3 systems all on one controller I can’t verify which fancoil has the faulty thermistor as I can only see thermistor values for x4 of the units. It shows unit no2 has the C4 on the controller, but that could mean anything. Tried forced fan ‘ON’ for unit 2, but no fan runs, so could be any of the 10 can coils. . What would you say is the easiest way of identifying which unit has the faulty thermistor? I was thinking of separating them into three separate systems so I can read the thermistor readings correctly and try identify that way, but it’s a pain to do. Any other ideas?!? Sorry for the essay 😂
@@tom24057 oh man that's a tough one. You can pull the stat off and test 1 at a time. Or use service checker to see what they all say. Ultimately you'll have to ohm it out to verify so I guess whatever is fastest. I'd throw a service checker on quick and put all systems into refer recovery so they can all stabilize then compare all the temp values on service checker. Should only take 5 minutes then go ohm the one that seems off. By the way this is exactly why I never put multiple outdoors on one stat. When there's an error it causes such a headache.
@@InverterAlways great ideas! Totally agree, I explained to the customer multiple systems on one controller is a nightmare 😂 thanks so much for your advice. Only problem with using the service checker… it’ll verify one of the 10 fan coil thermistors is reading inaccurately, but I’ll still not know which one it is 😂👍🏼 I’ll keep you posted👍🏼👍🏼😂
Great video as always Dana! I've 3 questions if you don't mind, why do we need sometimes to twin ports? Also, is switch 3 on DS2 for disabling the C and D ports? If we twin A and B that means that my com wire should land on port A only? After June I will definitely be a member of this channel I just need to graduate from my collage first. Thanks!
Hey Dana great content! I recognize this vid is a little old now but still helpful. I’m having an issues with my system. I have a four port and two six port boxes in the system . I can’t get rid of the Ua53 code for the life of me . I tried your methods on here and also tried the daikin app dipswitch methods to no avail. I have fourteen heads on the run between the three. When I put in settings 1 code 10 it shows 13. Could this be the issue? Not seeing a head ? Or should I focus on the bs boxes still with this fault? Also , if I am not reading a head, what’s the best way to figure out which it is? The fans on all go on…
Forced fan from outdoor to see which one you're missing. Quadruple check the switches I can't tell you how many times someone has sworn to me it's right and what do ya know, it's wrong lol. Make sure to remember ghost Ports on the 6 port box. Full reboot and hold reset or return depending on outdoor model for 20 seconds right after power up of outdoor to reinitalize the addressing. Also make sure all units are properly Landed at each port terminal and make sure all units have the proper line voltage and stat displays. Forced fan should show you which indoor isn't blowing that's the missing unit from the communication side.
Thanks for you explained. I have a question. What are the factory settings to DS1 DS2 for DAIKIN CLASSIC INVERTER? In my case DS1 "D" is switch ON DS2 "H" is switched ON. That is normally? Thank you!
Usually you purge from one of the lines. The valves come open from Daikin. If you are doing service work then put the system into recovery mode to force open all the valves.
@@InverterAlways I will give try. I completely forgot that somewhere I spotted in docs such mode for REYQ14T7Y...That branch box is used in another system...
I have a 6 port Branch Box A-B ,C-D are twin pipe together E is straight Piped F is not begin used I have 2 Boards how do I set my dip switches Left board DS-1 DS-2 Right board DS-1. DS-2 I would appreciate any help !
I have a Daikin DM96VC0603BN. I found the correct dip switch / switch bank to adjust the continuous fan speed, but I accidentally popped the dip switch itself off the circuit board (switchboard?). I couldn't get it to reattach, even with it lined up perfectly, so after adjusting the tiny switches to put the fan at 75% speed, I put the dip switch back in place and put scotch tape over it to keep it from moving. Everything seems to be working fine. I can tell my fan is at a higher speed, so I know that worked. The status box said On when I switched the furnace back on and is now going back and forth from P1 to 8. I'm not sure why it says P1, as that means low stage HP heat and I have the air running and have verified it's cold air coming out. I guess I'm wondering if the status is okay and whether or not it's okay to keep the dip switch in place with scotch tape? Otherwise it falls right off. Thanks for the response!
I'd replace the board regardless. Do you have the furnace as a standalone furnace or is it tied in with a fit. Unitary. Or vrv system? On some system the dip switches are disabled on the furnace and controlled via the switches on the communicating coil.
@@InverterAlways I'm not really sure what you're asking? It's a standalone furnace. The only thing controlling it is the circuit board in the bottom half of the furnace. Wouldn't it be expensive to replace the entire circuit board? If everything is working okay, is it causing any harm to continue using it with the dip switch held in place with scotch tape?
@@JT-um4rk I was asking if it was paired with something to get the full scope. It should be covered under the standard parts warranty. You can leave it, but I would not leave it that way myself.
Sir Daikin vrv iv+ inverter 14hp outdoor unit condenser dc motor pcb damage I am new pcb buying the market I can do direct pcb fitting or not that much I have to change anything in it master control pcb & programing ?
Fan motor damaged? Or fan driver board? Or inverter board? Depending on model some units have a fan driver some are built in to the inverter. Replace whichever is damaged.
probably from a wiring issue or dip switch issue. How many ports does it recognize being used versus actually being used? check each port to ensure there aren't any wires landed, and make sure to double check the number of ports via dip switches. may also be worth double checking to see if any indoor units are being daisy chained to a single port but piped to individual ports, or vise versa.
@@InverterAlways Yes. I was confused to what it was communicating with. For some reason I thought i needed to communicate with the physical BS box rather than the ports within the BS box.
Hello Dana, I have a Daikin BPMKS049A3U Branch Box, nothing as complicated as a VRV 6 port setup. The wiring method for the power is labeled L1 and L2 with a Ground. Is L1 load(hot) and L2 Neutral? Thanks in advance for your help.
@@InverterAlways Thanks for the reply. I was confused about that. Power (15 amp circuit) is supplied from the main panel to the disconnect (15 amp switch); then from the disconnect switch to the branch box. L1 black, L2 white, ground green.
@@360therapy8 15 amps could be 120 or 208/230. 15 amps is the size of the circuit not the type. Sounds like you're playing with 120 which will not work.
@@360therapy8 you may want to consult with an electrician before changing anything. Just to be safe here. Also if you're outside the states it's possible those boxes use different power. So you'd be best to verify with the submittal data of your unit in your market. Just trying to keep ya out of trouble.
@@InverterAlways you are right, thanks again for your help. I will consult with an electrician. Here’s the setup: In the main panel, a 15 amp single-pole breaker is dedicated to the branch box. The wiring from the main panel to a disconnect switch located near the branch box consists of 1black (hot), 1white (neutral), and 1green (ground). I believe you are right about it being 120v. The branch box has not been connected.
Hello Dana so I have a 6 port box and they’re only using 5 ports and the installer has on the second board dipswitches 2,3&4 on I’m assuming to disable the six port and the last two for 7&8 does this sound correct ?
Nope. If port F is blank turn on right hand board ds1 switch 2 for port f being disabled. Leave switches 3 and 4 alone. On that same board ds2 switch 4 should already be on disabling the ghost ports 7 and 8 that don't physically exist on the unit.
@@InverterAlways ok I will check this out tomorrow is there any where I can find a troubleshooting guide or information ℹ️ n the branch selector box ? We have a new school that was finished last year and we’ve had nothing but issues out of the systems and contractors are pointing fingers at Each other with no real solution or fix so it’s leaving us to try and diagnose this stuff ourselves with no real knowledge on then or anything to go off of really im new to vrv systems and would like to learn more about them and how to troubleshoot them better so I can be a better technician when I come up to these units
@@alantreadwell5369 that's why I created this channel my friend. To spread awareness and info to help. You definitely want to read the service manuals. Those are filled with info. But whoever the contractor is Servicing the job (if there even is one), they can always get daikin to help them if they can't figure it out. That or hire someone who knows how it works and who can help. You can also go through trainings daikin offers to learn more about this stuff. Lots of options.
@@InverterAlways thanks for the reply and yes they’re is a contractor that’s supposed to be working on this but they will not show up and has left us with all this mess so where trying to figure it out as we go and I will have to download the manuals because they didn’t leave us any literature to read up on been doing hvac for a little while now just never messed with much vrv stuff but I’m slowly grasping how it is all designed to work will just take time I suppose but I’ll see what I can find on the web for manuals we actually took some training with diakin online but was for commissioning and installs but with working for a school system that class was not beneficial for us as we would never be in that situation only to fix and make repairs and service equipment mainly I do appreciate your help so far and I have only watched a couple of your videos since I found you yesterday on here but will continue to watch and learn from them and the manuals when I find them thanks
@@alantreadwell5369 that's unfortunate to hear sorry. It may be worth double checking other contractors in your area to see if any are certified and well versed on vrv. In the meantime some of my videos may help (hopefully). Service classes are awesome but it definitely helps to know how it's supposed to install and function in order to properly diagnose problems. Speaking of problems what exactly is thr issue you're having? Error codes? Or no error codes and just poor performance?
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Hi Dana, it's just amazing that next only yesterday I fitted a 4-Way BS Box on Daikin VRV3 System as we are carrying out some modifications to an existing system. Your video came at the right time. We have to pipe up the new BS Box next week. Thank you so much for sharing this very important information with us, it's really a great assistance. We are here in the UK. The BS box we are fitting is for a VRV 4 system and is compatible with the VRV3 as well (Daikin). Watched many of your videos. Thank you once again.
The vrv3 outdoor will likely need a board swap to make it compatible with vrv4 branch boxes. At least here in the states they are not compatible by default with vrv3 systems. We have to upgrade the vrv3 with a new board to allow the integration to occur.
Glad this helped you at the right time!!
@@InverterAlways Thank you for your reply. Daikin UK confirmed that the new BS boxes for VRV 4 are compatible with VRV3 system. All the best.
Nice explanation on this, thanks Dana.
Thanks Scott
Thank you for the great content 🙏
Glad to help!
Thank you for this helped alot 🙏
Glad it helped!
Thankyou very much! Another brilliant video Dana
Thanks Tom!
@@InverterAlways feel free to ignore this, but quick question….
Got x3 separate RZQ200 systems serving 10 fan coils. (x3FCU-x3FCU-x4FCU) Previous engineer has piggybacked them all onto x1 BRC1E controller. Problem is, I have a C4 fault (liquid therm) but because it’s 3 systems all on one controller I can’t verify which fancoil has the faulty thermistor as I can only see thermistor values for x4 of the units. It shows unit no2 has the C4 on the controller, but that could mean anything. Tried forced fan ‘ON’ for unit 2, but no fan runs, so could be any of the 10 can coils. . What would you say is the easiest way of identifying which unit has the faulty thermistor? I was thinking of separating them into three separate systems so I can read the thermistor readings correctly and try identify that way, but it’s a pain to do. Any other ideas?!? Sorry for the essay 😂
@@tom24057 oh man that's a tough one. You can pull the stat off and test 1 at a time. Or use service checker to see what they all say. Ultimately you'll have to ohm it out to verify so I guess whatever is fastest. I'd throw a service checker on quick and put all systems into refer recovery so they can all stabilize then compare all the temp values on service checker. Should only take 5 minutes then go ohm the one that seems off.
By the way this is exactly why I never put multiple outdoors on one stat. When there's an error it causes such a headache.
@@InverterAlways great ideas! Totally agree, I explained to the customer multiple systems on one controller is a nightmare 😂 thanks so much for your advice. Only problem with using the service checker… it’ll verify one of the 10 fan coil thermistors is reading inaccurately, but I’ll still not know which one it is 😂👍🏼 I’ll keep you posted👍🏼👍🏼😂
This was a very helpful video.
Thanks Dana
Thanks James!
Very nice video sir
Thank you
🎉
Great video as always Dana! I've 3 questions if you don't mind, why do we need sometimes to twin ports? Also, is switch 3 on DS2 for disabling the C and D ports? If we twin A and B that means that my com wire should land on port A only? After June I will definitely be a member of this channel I just need to graduate from my collage first. Thanks!
Hey Dana great content! I recognize this vid is a little old now but still helpful. I’m having an issues with my system. I have a four port and two six port boxes in the system . I can’t get rid of the Ua53 code for the life of me . I tried your methods on here and also tried the daikin app dipswitch methods to no avail. I have fourteen heads on the run between the three. When I put in settings 1 code 10 it shows 13. Could this be the issue? Not seeing a head ? Or should I focus on the bs boxes still with this fault? Also , if I am not reading a head, what’s the best way to figure out which it is? The fans on all go on…
Forced fan from outdoor to see which one you're missing. Quadruple check the switches I can't tell you how many times someone has sworn to me it's right and what do ya know, it's wrong lol. Make sure to remember ghost Ports on the 6 port box. Full reboot and hold reset or return depending on outdoor model for 20 seconds right after power up of outdoor to reinitalize the addressing. Also make sure all units are properly Landed at each port terminal and make sure all units have the proper line voltage and stat displays. Forced fan should show you which indoor isn't blowing that's the missing unit from the communication side.
Thanks for you explained.
I have a question.
What are the factory settings to DS1 DS2 for DAIKIN CLASSIC INVERTER?
In my case
DS1 "D" is switch ON
DS2 "H" is switched ON.
That is normally?
Thank you!
I am unsure on the very oldest models, you may want to check in with your local vendor or factory rep for support on that.
@@InverterAlways.Thank you! It is manufactured in 2014 this model.it is like a vrv III i think
Guys, how do you braze branch boxes with nitrogen? How to open valves to allow the flow of nitrogen?
Usually you purge from one of the lines. The valves come open from Daikin. If you are doing service work then put the system into recovery mode to force open all the valves.
@@InverterAlways I will give try. I completely forgot that somewhere I spotted in docs such mode for REYQ14T7Y...That branch box is used in another system...
I have a 6 port Branch Box A-B ,C-D are twin pipe together E is straight Piped F is not begin used I have 2 Boards how do I set my dip switches
Left board DS-1 DS-2
Right board DS-1. DS-2
I would appreciate any help !
Left board ds2 switches 1 and 2 on. Right board ds1 switch 2 on, ds2 switch 4 on.
I have a Daikin DM96VC0603BN. I found the correct dip switch / switch bank to adjust the continuous fan speed, but I accidentally popped the dip switch itself off the circuit board (switchboard?). I couldn't get it to reattach, even with it lined up perfectly, so after adjusting the tiny switches to put the fan at 75% speed, I put the dip switch back in place and put scotch tape over it to keep it from moving. Everything seems to be working fine. I can tell my fan is at a higher speed, so I know that worked. The status box said On when I switched the furnace back on and is now going back and forth from P1 to 8. I'm not sure why it says P1, as that means low stage HP heat and I have the air running and have verified it's cold air coming out. I guess I'm wondering if the status is okay and whether or not it's okay to keep the dip switch in place with scotch tape? Otherwise it falls right off. Thanks for the response!
I'd replace the board regardless. Do you have the furnace as a standalone furnace or is it tied in with a fit. Unitary. Or vrv system? On some system the dip switches are disabled on the furnace and controlled via the switches on the communicating coil.
@@InverterAlways I'm not really sure what you're asking? It's a standalone furnace. The only thing controlling it is the circuit board in the bottom half of the furnace. Wouldn't it be expensive to replace the entire circuit board? If everything is working okay, is it causing any harm to continue using it with the dip switch held in place with scotch tape?
@@JT-um4rk I was asking if it was paired with something to get the full scope. It should be covered under the standard parts warranty. You can leave it, but I would not leave it that way myself.
Sir Daikin vrv iv+ inverter 14hp outdoor unit condenser dc motor pcb damage I am new pcb buying the market I can do direct pcb fitting or not that much I have to change anything in it master control pcb & programing ?
Fan motor damaged? Or fan driver board? Or inverter board? Depending on model some units have a fan driver some are built in to the inverter. Replace whichever is damaged.
Hi Dana,
Any idea as to why a system might read more BS box than what is actually installed ?
probably from a wiring issue or dip switch issue. How many ports does it recognize being used versus actually being used? check each port to ensure there aren't any wires landed, and make sure to double check the number of ports via dip switches. may also be worth double checking to see if any indoor units are being daisy chained to a single port but piped to individual ports, or vise versa.
@@InverterAlways Yes. I was confused to what it was communicating with. For some reason I thought i needed to communicate with the physical BS box rather than the ports within the BS box.
Hello Dana, I have a Daikin BPMKS049A3U Branch Box, nothing as complicated as a VRV 6 port setup. The wiring method for the power is labeled L1 and L2 with a Ground. Is L1 load(hot) and L2 Neutral? Thanks in advance for your help.
That box requires 208/230v power so both L1 and L2 are hot. Ground is ground.
@@InverterAlways Thanks for the reply. I was confused about that. Power (15 amp circuit) is supplied from the main panel to the disconnect (15 amp switch); then from the disconnect switch to the branch box. L1 black, L2 white, ground green.
@@360therapy8 15 amps could be 120 or 208/230. 15 amps is the size of the circuit not the type. Sounds like you're playing with 120 which will not work.
@@360therapy8 you may want to consult with an electrician before changing anything. Just to be safe here. Also if you're outside the states it's possible those boxes use different power. So you'd be best to verify with the submittal data of your unit in your market. Just trying to keep ya out of trouble.
@@InverterAlways you are right, thanks again for your help. I will consult with an electrician. Here’s the setup: In the main panel, a 15 amp single-pole breaker is dedicated to the branch box. The wiring from the main panel to a disconnect switch located near the branch box consists of 1black (hot), 1white (neutral), and 1green (ground). I believe you are right about it being 120v. The branch box has not been connected.
Hello Dana so I have a 6 port box and they’re only using 5 ports and the installer has on the second board dipswitches 2,3&4 on I’m assuming to disable the six port and the last two for 7&8 does this sound correct ?
Nope. If port F is blank turn on right hand board ds1 switch 2 for port f being disabled. Leave switches 3 and 4 alone. On that same board ds2 switch 4 should already be on disabling the ghost ports 7 and 8 that don't physically exist on the unit.
@@InverterAlways ok I will check this out tomorrow is there any where I can find a troubleshooting guide or information ℹ️ n the branch selector box ? We have a new school that was finished last year and we’ve had nothing but issues out of the systems and contractors are pointing fingers at Each other with no real solution or fix so it’s leaving us to try and diagnose this stuff ourselves with no real knowledge on then or anything to go off of really im new to vrv systems and would like to learn more about them and how to troubleshoot them better so I can be a better technician when I come up to these units
@@alantreadwell5369 that's why I created this channel my friend. To spread awareness and info to help. You definitely want to read the service manuals. Those are filled with info. But whoever the contractor is Servicing the job (if there even is one), they can always get daikin to help them if they can't figure it out. That or hire someone who knows how it works and who can help. You can also go through trainings daikin offers to learn more about this stuff. Lots of options.
@@InverterAlways thanks for the reply and yes they’re is a contractor that’s supposed to be working on this but they will not show up and has left us with all this mess so where trying to figure it out as we go and I will have to download the manuals because they didn’t leave us any literature to read up on been doing hvac for a little while now just never messed with much vrv stuff but I’m slowly grasping how it is all designed to work will just take time I suppose but I’ll see what I can find on the web for manuals we actually took some training with diakin online but was for commissioning and installs but with working for a school system that class was not beneficial for us as we would never be in that situation only to fix and make repairs and service equipment mainly I do appreciate your help so far and I have only watched a couple of your videos since I found you yesterday on here but will continue to watch and learn from them and the manuals when I find them thanks
@@alantreadwell5369 that's unfortunate to hear sorry. It may be worth double checking other contractors in your area to see if any are certified and well versed on vrv. In the meantime some of my videos may help (hopefully). Service classes are awesome but it definitely helps to know how it's supposed to install and function in order to properly diagnose problems.
Speaking of problems what exactly is thr issue you're having? Error codes? Or no error codes and just poor performance?
i have a 6 port box.. circuits A&B feed 2 different fan coils E&F are twinned how should my dip switches be set on a 6 port branch box
What about c and d ports?
@@InverterAlways Ports C&D are empty. \ A,B are under 54kbtu. C&D are empty. E&F are twinned for a FXTQ60
@@kevingrimes6725 which dip switches do you think should be turned on after watching this video?
@@InverterAlways C&D in the on position and F on dip switch port 2 Off.
I mean F on bank 2 On