Troubleshooting for Daikin Aircon CTK25FVEN

[JCTK]

Hi guys,

I think I have some problem with my Daikin CTK25FVEN. When I switch on my aircon with the wireless remote last night, the green light which indicate that the aircon is on and working kept blinking but the aircon did not work. Normally the green light should just light up and not blinking. But when I try with my other few units in the other rooms they are working fine. Anyone know what is wrong with it and how to solve this problem?

Thanks!

[wkwongalan]

you must use your remote control to find out the error code 1st,i suspect is that common fault coil themistor faulty(C4).

[Lippygit]

Most common fault for failure is lack of refrigerant !

[astiquer]

DAIKIN error codes:

AO Indoor Error of external protection device
A1 Indoor PCB defect
A3 Indoor Malfunction of drain Level control system
A5 Indoor Freeze-up prevention
A6 Indoor Fan motor lock, Overload
A7 Indoor Malfunction of swing motor flap
A9 Indoor Malfunction of EEV
AF Indoor Drain level above limit (clogging)
AJ Indoor Malfunction of capacity set device
C3 Indoor Malfunction of drain thermistor
C4 Indoor Malfunction of liquid pipe thermistor
C5 Indoor Malfunction of gas pipe thermistor
C7 Indoor Lower louvre limit switch/motor
C9 Indoor Malfunction of air thermistor
CC Indoor Malfunction of moisture sensor
CA Indoor Malfunction of discharge air thermistor
CJ Indoor Malfunction of remote control thermistor
CE Indoor Malfunction of radiant heat sensor
E0 Outdoor Activation of outdoor safety device
E1 Outdoor PCB defect
E3 Outdoor Activation of high pressure switch
E4 Outdoor Activation of low pressure switch
E5 Outdoor Activation of compressor over heat protection
E5 Outdoor Compressor motor lock
E6 Outdoor Compressor start up error
E6 Outdoor Standard compressor lock/overcurrent
E7 Outdoor Fan motor lock, Overload
E8 Outdoor Inverter input overcurrent
E9 Outdoor Malfunction of EEV
EA Outdoor Four way valve defective.
F3 Outdoor Abnormal discharge pipe temperature
F6 Outdoor Refrigerant overcharged
FC Outdoor Low pressure drop.
H3 Outdoor High pressure switch defect
H4 Outdoor Low pressure switch defect
H6 Outdoor Compressor motor position detection sensor error
H7 Outdoor Fan motor position detection sensor error
H8 Outdoor Current transformer error
H9 Outdoor Malfunction of air thermistor
J1 Outdoor Malfunction of pressure sensor
J2 Outdoor Current sensor malfunction
J3 Outdoor Malfunction of discharge pipe thermistor
J4 Outdoor Low pressure saturation thermistor
J5 Outdoor Malfunction of suction pipe thermistor
J6 Outdoor Malfunction of heat exchanger thermistor
J7 Outdoor Malfunction of heat exchanger liquid thermistor
J8 Outdoor Malfunction of liquid pipe thermistor
J9 Outdoor Malfunction of gas pipe thermistor
JA Outdoor Malfunction of discharge pipe pressure sensor
JC Outdoor Malfunction of suction pipe pressure sensor
JH Outdoor Malfunction of oil temperature sensor
L0 Outdoor Malfunction of inverter
L3 Outdoor Electronic component box overheat
L4 Outdoor Inverter cooling defect
L5 Outdoor Comp motor ground fault, Short circuit
L6 Outdoor Compressor motor grounding/short circuit
L7 Outdoor Total input overcurrent
L8 Outdoor Comp overload, Motor disconnected
L9 Outdoor Compressor lock
LA Outdoor Power unit malfunction
LC Outdoor Transmission between inverter & outdoor
P1 Outdoor Inverter over ripple
P3 Outdoor Thermistor abnormality
P4 Outdoor Power unit humidity sensor malfunction
PJ Outdoor Failure of capacity set resistor
U0 System Shortage of refrigerant or EEV failure
U1 System Negative phase, Open phase
U2 System Power supply insufficient
U3 System Wiring check operation not executed
U3 System Mismatch of indoor and outdoor units (Split only)
U4 System Transmission between indoor units
U5 System Transmission to remote controller
U6 System Malfunction transmission outdoor to BP unit
U7 System Transmission between outdoor units
U7 Outdoor Malfunction between outdoor boards(RMX/RX RK)
U8 System Transmission between master & slave R/C
U9 System Transmission error between indoor to outdoor
UA System Excessive number of fancoils
UC System Address duplication of central controllers
UE System Transmission error between indoor & central
UF System Refrigeration system not set/wiring - piping
UF System Terminals 1 and 3 crossed (Split/Skyair)

If your DAIKIN remote controller comes with a "test" button, use it. Otherwise press the Temperature UP,
Temperature DOWN and the MODE buttons all at the same time. I repeat, all 3 buttons at the same time.

You will see 00 on the remote controller. The first "0" will be blinking.

Stand facing the particular air conditioner you wanted to test.

Now press the Temperature UP button, "0" will become "A" and the air conditioner will respond with either a single
beep or double beep.

Carry on pressing the Temperature UP button and listen to the beeping sound, stop when you hear a double beep.
For example: it is now showing "C0".

Now press the MODE button, the second "0" will be blinking.
Now press the Temperature UP button, "0" will become "1" and the air conditioner will respond with either a double
beep or a continuous beep.

The continuous beep is the error code. For example "C4", it means it is a faulty liquid pipe thermistor

[declan simmonds]

Hello
Is this unit a multi system or is it a one to one
sometimes if its a multi and you have other units operating on different modes then one system does not work as it is waiting for the other unit to complete that function before it can start the others.

[djgc]

thanks i did what u told me to do on the remote. i found out its U4 System Transmission between indoor units

what exactly does that mean?.. i just suddenly happened

[Andy AC]

Turn off the power to condensing unit for thirty seconds or so, then switch back on. If you are lucky, it will fire up again, if not , new outdoor main pcb. I assume the unit is inverter, i'm not familiar with that model number.

Andy

[kath123]

DAIKIN error codes:

AO Indoor Error of external protection device
A1 Indoor PCB defect
A3 Indoor Malfunction of drain Level control system
A5 Indoor Freeze-up prevention
A6 Indoor Fan motor lock, Overload
A7 Indoor Malfunction of swing motor flap
A9 Indoor Malfunction of EEV
AF Indoor Drain level above limit (clogging)
AJ Indoor Malfunction of capacity set device
C3 Indoor Malfunction of drain thermistor
C4 Indoor Malfunction of liquid pipe thermistor
C5 Indoor Malfunction of gas pipe thermistor
C7 Indoor Lower louvre limit switch/motor
C9 Indoor Malfunction of air thermistor
CC Indoor Malfunction of moisture sensor
CA Indoor Malfunction of discharge air thermistor
CJ Indoor Malfunction of remote control thermistor
CE Indoor Malfunction of radiant heat sensor
E0 Outdoor Activation of outdoor safety device
E1 Outdoor PCB defect
E3 Outdoor Activation of high pressure switch
E4 Outdoor Activation of low pressure switch
E5 Outdoor Activation of compressor over heat protection
E5 Outdoor Compressor motor lock
E6 Outdoor Compressor start up error
E6 Outdoor Standard compressor lock/overcurrent
E7 Outdoor Fan motor lock, Overload
E8 Outdoor Inverter input overcurrent
E9 Outdoor Malfunction of EEV
EA Outdoor Four way valve defective.
F3 Outdoor Abnormal discharge pipe temperature
F6 Outdoor Refrigerant overcharged
FC Outdoor Low pressure drop.
H3 Outdoor High pressure switch defect
H4 Outdoor Low pressure switch defect
H6 Outdoor Compressor motor position detection sensor error
H7 Outdoor Fan motor position detection sensor error
H8 Outdoor Current transformer error
H9 Outdoor Malfunction of air thermistor
J1 Outdoor Malfunction of pressure sensor
J2 Outdoor Current sensor malfunction
J3 Outdoor Malfunction of discharge pipe thermistor
J4 Outdoor Low pressure saturation thermistor
J5 Outdoor Malfunction of suction pipe thermistor
J6 Outdoor Malfunction of heat exchanger thermistor
J7 Outdoor Malfunction of heat exchanger liquid thermistor
J8 Outdoor Malfunction of liquid pipe thermistor
J9 Outdoor Malfunction of gas pipe thermistor
JA Outdoor Malfunction of discharge pipe pressure sensor
JC Outdoor Malfunction of suction pipe pressure sensor
JH Outdoor Malfunction of oil temperature sensor
L0 Outdoor Malfunction of inverter
L3 Outdoor Electronic component box overheat
L4 Outdoor Inverter cooling defect
L5 Outdoor Comp motor ground fault, Short circuit
L6 Outdoor Compressor motor grounding/short circuit
L7 Outdoor Total input overcurrent
L8 Outdoor Comp overload, Motor disconnected
L9 Outdoor Compressor lock
LA Outdoor Power unit malfunction
LC Outdoor Transmission between inverter & outdoor
P1 Outdoor Inverter over ripple
P3 Outdoor Thermistor abnormality
P4 Outdoor Power unit humidity sensor malfunction
PJ Outdoor Failure of capacity set resistor
U0 System Shortage of refrigerant or EEV failure
U1 System Negative phase, Open phase
U2 System Power supply insufficient
U3 System Wiring check operation not executed
U3 System Mismatch of indoor and outdoor units (Split only)
U4 System Transmission between indoor units
U5 System Transmission to remote controller
U6 System Malfunction transmission outdoor to BP unit
U7 System Transmission between outdoor units
U7 Outdoor Malfunction between outdoor boards(RMX/RX RK)
U8 System Transmission between master & slave R/C
U9 System Transmission error between indoor to outdoor
UA System Excessive number of fancoils
UC System Address duplication of central controllers
UE System Transmission error between indoor & central
UF System Refrigeration system not set/wiring - piping
UF System Terminals 1 and 3 crossed (Split/Skyair)

If your DAIKIN remote controller comes with a "test" button, use it. Otherwise press the Temperature UP,
Temperature DOWN and the MODE buttons all at the same time. I repeat, all 3 buttons at the same time.

You will see 00 on the remote controller. The first "0" will be blinking.

Stand facing the particular air conditioner you wanted to test.

Now press the Temperature UP button, "0" will become "A" and the air conditioner will respond with either a single
beep or double beep.

Carry on pressing the Temperature UP button and listen to the beeping sound, stop when you hear a double beep.
For example: it is now showing "C0".

Now press the MODE button, the second "0" will be blinking.
Now press the Temperature UP button, "0" will become "1" and the air conditioner will respond with either a double
beep or a continuous beep.

The continuous beep is the error code. For example "C4", it means it is a faulty liquid pipe thermistor

how can i fix the problem if U0 to UF gives a double beep?

[Reefer1]

Double beep indicates you have the first part of the fault code correct, you need to listen for one long beep.
It will be U_

[Gibbering Fool]

Hi, i've been having similar problems with my Daiken inverter also. Its been shuttin down randomly and I have to switch it off at the power board to get it back on again. Also, its not cooling the room very well at all, though it seems to work a bit better at night.

Anyway, I did what was suggested above and found the error code on my remote. It was F3 - Outdoor abnormal discharge temperature. Can anyone tell me what's involved with this and how to fix it?

[rude]

Hi, i've been having similar problems with my Daiken inverter also. Its been shuttin down randomly and I have to switch it off at the power board to get it back on again. Also, its not cooling the room very well at all, though it seems to work a bit better at night.

Anyway, I did what was suggested above and found the error code on my remote. It was F3 - Outdoor abnormal discharge temperature. Can anyone tell me what's involved with this and how to fix it?
most probably a gas leak

[Lippygit]

Sounds to me as quoted above that you are short on refrigerant thats usually what abnormal discharge temperature points to

[boxsmasher]

Hi gents,

Sorry to bump quite an old thread, but I was hoping someone could tell me -- when running the diagnostic above, mine gives me the code "UX" (well I assume it's an X), which isn't on the list.

Different model though -- It's an FTXS35EVMA or something like that.

Does this mean I need to get it serviced? It's brand new (and 2 other units are having this problem as well) :(

[boxsmasher]

gives me the code "UX"

Now that I think of it, it's probably UH. Derr.

[CarlosColon]

Hi gents,
i am new on this forum and I know is an old thread, holpefully you can help me. I have a 4MKD90 multi split (all 4 ports are used) there is 2 of them that get to an standby mode (green led blinking) during nigth, the code for those unit is J9 (gas pipe termistor) the other does not provide any fault code. I check the gas pipe termistor and they are fine. Also I check the Electronic valve and they are good. I took the outdoor PCB to the waranty services for testing and they claim the board is good. The refrigerant was check and is fine. (actually we recovery the refrigerant and load it again by weigth). the two modules for the indoor units failing were replaced one or two month ago. I have no more bullets on the troubleshooting. I still incline on the outdoor PCB board, but if you hav any recomendation please advice.

[Temprite]

Try a wiring correction test. Might be your problem.

[CarlosColon]

I tried the wiring check function without results, also I check all the termistors outdoor, discharge, etc. all are fine. Furthermore Also I swap the indoor board of one which read out the fault code with one that is working properly (to rule out the modules) but still the sameand the

[msotan09]

Turn off the power to condensing unit for thirty seconds or so, then switch back on. If you are lucky, it will fire up again, if not , new outdoor main pcb. I assume the unit is inverter, i'm not familiar with that model number.

Andy

Hi, I'm also having U4 error. Does this mean it's the main board issue? Appreciate your advice. Thanks in advance.

[Martin Neale]

like you guys going nuts over this F3 fault..local engineers (not Daikin) have tried everything ..Daikin engineers turned upp say board test shows no problems gassed up and ran for a while then back to same problem 3 units on this one ..the stand alone unit runs fine...will have to sleep in lounge when it hot
Any ideas please..

Martin

[misterfish]

Hello
Is this unit a multi system or is it a one to one
sometimes if its a multi and you have other units operating on different modes then one system does not work as it is waiting for the other unit to complete that function before it can start the others.
Thank you Declan, I checked all four units and found one set to heating, changed mode (after replacing controller batteries) and am now basking in cool air - it's 34 celsius outside.
Maybe an indicator, the operation light on the non-working units was flashing, but no mention of this in the handbook.
Thanks again
Misterfish