ฝัง
- เผยแพร่เมื่อ 12 พ.ย. 2021
- Brand : Daikin VRV 3
Model : RXQ14PAY13
error code : U7
Description of Fault
Outdoor Unit Communication Error to Slave CU
Detail of Fault
This is a Communication problem between the Outdoor unit's in a multi module system.
This can caused if one of the slave Outdoor unit's has been turned off,or if the Outdoor PCB
has been set to look for a heat/cool changeover master.Apply power to the unit that has lost power. Change the heat/cool changeover setting back to master.
remember to disconnect the (X1A)clip, PCB power supply incoming clip after ermergency setting.
if not the error come U7 will happen again.
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Great Channel Bon. Watching your videos has helped me several times when troubleshooting these Daikin systems. Thanks!!
Welcome
Thanks for your update video sir
Thanks
Terima kasih sudah berbagi ilmunya.
Sama sama master🙏🙏
Thx for your information
Welcome
Thank you so much
Thanks bro.
Sir can we resolve same problem on vrv x
Thnxx 👌👌👌
Welcome 🙏
I like it
How to make emergency settings sir please explain me please
I have one doubt sir cu main PCB faulty after emergency setting did it then we need to close service port valve close or not ?
Up to you.some never close
Sir can I get jobe
5 year experience in vrv
Can I power off the CU-slave 1 after disconnect clip X1A, while keep the system emergency running.
No need.
Hi boss VRV4 single outdoor unit error code U7-02 what problem sir ?
I have one doubt sir can you clarification to me main PCB light no have right ? From incomig blue colour wire clip pull out after do emergency setting
Emergency setting means error code not show or temporary not use slave 1
Ermergency setting for cu slave 1 temporary not working.
If not pull out the blue colour clip,the error will happen again.
@@BonMj this all emergency setting is same standard compressor and inverter compressor faulty that time also did emergency setting temporary not use the unit or not
@@peramaraj2763 if single cu. U can by pass inverter compressor or standard compressor.
For multi outdoor unit,u only can by pass the cu, main,slave1 or slave 2
@@BonMj thanks sir
🥰
Hello Mr Bon. Tq 4 sharing. As i know to set the emergency setting must from the Master unit and for your case here, CU 1(master cu) has a faulty on main pcb. So what is the method to set the emergency setting if the master CU is actually a faulty unit?
Thank you.
If master unit pcb faulty,just off the master unit,reset the slave unit(become master)
@@BonMj Tq in advice Mr Bon. VRV system is provided with oil return operation for every 8 hour if im not mistaken. Refer to your case in here, we will temporary disable CU 1, how about with oil return operation? If it is connected with 2 or 3 module CU, is it going to give us any issue later?
Thank you.
Hello Mr Bon.
I'm to the outdoor unit.
Witch 2 wires is communication from outdoor unit to indoor units?
I have U7 errorJ2 and U4.
Could you make me understand?
Thermistor reading liquid pipe:
1 with 2 =27 kohm
2with 3=3.8Mohm
3 with 4 = 27kohm
4 with 5 =4 Mohm
6 with 7 = 8 Mohm
7 with 8 pin =26.9 kohm
It is short circuit?
The error now is U4
Thank you!
Check thermistor reading in the same time must follow the ambient temperature or by your thermistor temperature on the spot.
Example..
20°c = 25K ohm
30°c = 16K ohm
@@BonMj Thank you,Mr Bon.
I identified R6T liquid pipe thermistor with resistance OL(short circuit).
But I have found 2 of 5 indoor units off(perhaps don't getting voltage the PCBs). The another 3 with U4 error(I thing is the communication problem between indoor units or between indoor to outdoor unit).
hello good I had u9 in a reyq16 system. I checked the valves all ok and I changed the main pbc board and I changed to u7
now with u7 change board to pbc slave, change inverter to both units and i still have the same u7 fault
I'm one day away from seeing it and asking to change the condenser because I can't find a solution
If you could guide me, I have the error identified, but I can't figure out what exactly is the problem.
Master may I ask..vrv4 there's is no error at the thermostat but the indoor unit is running but not cooling.. I set thermostat to 16° but the temp reading at the area is 27° what it is possible to do why indoor unit is not cooling ?
1)off coil temperature?
2)gas pressure ?
3)remote control setting correct?
4)no of the indoor unit not cold?
@@BonMj there a error sir L5
@@BonMj sir how to truoble L5 error
L5 may inverter compressor over current or inverter pcb faulty
U7 error code daikin vrv. manual can on from cu.but we on from control panel u7 error code. Using adaptor card and go control panel.6 fcu
What is the VRV 3 error code U4 means, thank you
Most is communication problem or pcb faulty
@@BonMj 谢谢您的回复，还想问你怎样测PCB知道是坏了呢，谢谢您
@@peterpan8664 通常最容易看到的是pcb 没有灯，要check incoming 230V (蓝色clip,两个Live wire)如果有incoming,但是pcb没有亮灯，这个main pcb 就坏了。
👍🇹🇷🤳🛠️ hi bro
Hi bro, Thanks
How about the error Code U7-02 for VRV IV , thank you for your attention sir
Check out outdoor to outdoor wire connections or pcb
@@BonMj PCB Master or Slave sir .... or both off them
Erro u7-04
What?
Check outdoor to outdoor connections or pcb