How to solve error code F4 | Wet Alarm | Daikin VRV4

Brand : Daikin
model : RXQ8AYM (CU)
model : FXMQ140PAVE (FCU)
Symptoms : Blinking and error F4
Cause : One of the indoor unit gas temperature thermistor reading abnormal.
Action : Check CU error and indoor error using wire remote control.
Check thermistor reading.
Replace indoor gas temperature thermistor R3T.
Test run .
Method Of Error Detection
In cooling operation, detect the condition under which liquid refrigerant returns to the compressor, according to the temperature and pressure of each part.
Error Decision Conditions
When the following wet state continues for a period of 90 minutes, an alert is issued. An error is defined for 120 minutes.
* Wet state in outdoor units.
When the following wet state continues for a period of 45 minutes, an alert is issued.
* Wet state in some indoor units.
Supposed Cause
* Defective suction pipe thermistor.
* Defective discharge pipe thermistor.
* Defective high pressure sensor.
* Defective indoor unit electronic expansion valve.
* Dirty air filter.
#bonmj #daikin #vrv4

[@briansmith3681]

You always do a great job at your videos, keep up

[@BonMj]

Thanks bro

[@GodCzPl]

Thanks for your videos, I can really learn something from these.

[@BonMj]

Thanks

[@anbasellamuthu3658]

Good job thanks for the info 🙏

[@BonMj]

Thanks bro🙏

[@brandonle4930]

Good finding Bon!

[@BonMj]

Thanks

[@CT-vm4gf]

You’re a very good technician 👍🏽

[@BonMj]

Thanks

[@peramaraj2763]

Very useful sir your latest update video

[@BonMj]

Thanks

[@CCL13984]

Thx,sir good video

[@BonMj]

Welcome!

[@16valve64]

Thanks a lot bon

[@BonMj]

Welcome

[@matazglb5346]

Thanks you ☺

[@BonMj]

Welcome

[@daniloborges4869]

Obrigado , ajudou muito f4/02

[@alonsoacosta8545]

Gracias por la información. Eres el mejor.

[@BonMj]

Thanks for watching my video.
Please Like, Share and Subscribe .
🙏🙏🙏🙏

[@goparismail9727]

trimakasih ilmu yah mr bon sukses selalu bos ku thak you goood👍👍👍👍 mantapppp

[@BonMj]

Terima kasih master.
Tolong share kawan kawan ya🙏🙏

[@salimullahkhan5594]

thinks sir g thinks

[@BonMj]

Thanks

[@peramaraj2763]

I have one doubt sir DAIKIN vrv-3 indoor ducted unit set point -16 cut off the valve and set point -30 cut off the valve but set -24 can't cut off the valve more cooling the off what is the issue sir recently replaced EEV

[@peramaraj2763]

I have one doubt sir DAIKIN vrv-3 indoor ducted unit set point -16 cut off the valve and set point -30 cut off the valve but set -24 can't cut off the valve more cooling the off what is the issue sir recently replaced EEV

[@karthickkeya7078]

Thank you sir👍👍
We need more info about wirless adapter
How to use it, and how to find it the issues

[@BonMj]

Thanks

[@sahiljuned3762]

Hi boss please one video outdoor airnet address just demo

[@byyou1000]

hello sir., can you i form the normal themperature range.? for the liquid and gas.. thank you

[@BonMj]

8 - 12

[@syaha-dw9pj]

Hi Mr Bon,nk tnya klau sensor c4 rosak adkah boleh buat eev fully open jgak?

[@BonMj]

Selamat pagi, kena tengok keadaan, check c4 reading dulu.kalau reading kecil mungkin, boleh juga eev rosak punca eev fully open.

[@user-kf1ml3hw9q]

Hi, my house unit is also having this issue but it is not happening daily, currently 3 weeks. Why is this so? Do you help to do checks? We used to have this issue in 2021 and Daikin is unable to find out root cause till they changed the entire PCB outdoor. Before this, they changed the valve indoor. What is the impact of not fixing this F4 alarm?

[@BonMj]

Need collect data and check any parts reading abnormal

[@user-kf1ml3hw9q]

previously daikin collected data for 1 full week and cannot find a conclusion till they changed the PCB outdoor. Now this issue comes back again but not on a daily basis. However there is still aircon during the blinking light period. After we turn on and off, the light stopped blinking.

[@AA-su7up]

Hi I have problems putting in back my blower wheel into the shaft for my mitsubishi starmex aircon. Previously was stuck and I took it out, maybe I didnt screw the shaft properly. But now it could not be put in properly. Thanks. Is there any way to put it back smoothly?

[@BonMj]

Check the fan motor shaft alignment

[@BonMj]

czcams.com/video/GXLTcSNI3v8/video.html

[@AA-su7up]

@@BonMj Hi thanks for the fast reply, but I tried all angle plus putting lubricant, the blower wheel can only go in half the shaft, I see through the hole of the blower wheel and there is nothing stuck... feel the shaft and visual check also dont seem to have any protruding...

[@BonMj]

@@AA-su7up try to remove the blower screw and push in or the shaft uneven

[@yipgary6073]

請教Bon，如3代大金VRV，室內故障碼F4，會是那裡出錯？

[@BonMj]

先检查indoor eev 还有thermistor

[@jakesales7321]

What was wrong with office ac? Remote flashing.

[@BonMj]

Remote flashing and error F4, indoor thermistor faulty .

[@toufikmatib9855]

Hello Boj hope you well Thanks for the video .
Is it same for the vrv3 ?.
Please how do I know if example a error code appear on the control board , is the fault will be in indoor unit or at outdoor unit (condenser).
Many thanks
T.Matib

[@BonMj]

What is the error?

[@toufikmatib9855]

@@BonMj Hello Thank you for replying to me ,the error code is F4 on VRV3.
Also in general when I get error code flashing on controller how do I know is a fault on outdoor unit or on indoor unit.
Many thanks
Have good day Bon .
T.Matib

[@BonMj]

@@toufikmatib9855 F4 normally is indoor EEV problem.
Is fully open

[@toufikmatib9855]

@@BonMj Thank you Bon

[@toufikmatib9855]

Hello Boj I'm having trouble on this vrv3 with code error E2 so my read resistance is between white and red is 12mega ohm and red and black is 96 ohm
Ombiante temperature is around 40 degree what do you think about this sensor? as I don't have new one to compare
Thank you Bon

[@karaors8970]

hi bon nice Job bro.
J4 error code for video pls. Thnx.

[@BonMj]

Thanks

[@peramaraj2763]

Normally F4 error code is outdoor side or indoor side issue

[@BonMj]

Check Fcu eev

[@osailoliveira1489]

Tenho uma máquina daykin vrf, são 7 máquinas, 4 k7 e 3 piso teto , já limpei as bombas de treno ,o código PJ fica a.onde , na unidade evaporadora ou na condensadora?

[@BonMj]

Do you replace any pcb.
PJ normally is model setting issue

[@gothandaraj860]

What is error f4-05 Daikin vrv

[@BonMj]

Check indoor EEV

[@gothandaraj860]

Okay bon there is totally 7 indoor units and this model ac 18 hp &16hp master and slave unit how to check

[@BonMj]

@@gothandaraj860 try on half of the fcu in cool mode and half in fan mode.
If the fcu in fan mode still cold,mean the eev got problem

[@raremember331]

Permasalahannya di indoor atau outdoor ?

[@BonMj]

Most is indoor

[@raremember331]

can the damage be done outdoors too?

[@juliojulio6295]

Eror kode e9 24 diagnosis mr.

[@juliojulio6295]

Vrv4

[@juliojulio6295]

Im from indonesia

[@janshaw5472]

F4-02师傅

[@BonMj]

F4 check indoor EEV

[@muhammadarifbinhamdan6027]

Saya punya unit vrv3 keluar error F4, saya check Outdoor unit, inverter compressor sejuk kenapa ye?

[@BonMj]

Selamat pagi,F4 biasa nya salah satu indoor EEV rosak, EEV buka habis.check mana satu indoor yang terlalu sejuk,itu mungkin yang rosak.

[@vishnurajak3349]

Sir video hindi me. Daliye

[@BonMj]

👍

[@torushchannel5830]

Pengalaman.e peno iku

[@BonMj]

Thanks

[@-maynenkhitrucvitoquangkha4748]

Dear Sir,
I am a daikin air conditioning technician, I have followed your channel and learned a lot of useful things. Thank you for sharing that useful information.
By the way, can you let me know your email or somehow contact you directly so that you can advise me when I encounter any problems?
I really hope to get your help.

[@BonMj]

[e-mail]