I have a daikin split unit cut out with error code e4 which is a low pressure fault what can I do to get the unit running again?

If this is a Daikin unit,
This is stating that there has been a low pressure error on the system.
This could have been caused by a blockage in the pipe work or a possible shortage of refrigerant. It could also be due to a fault with the low pressure sensor/switch.

How to fault find a Daikin Air Conditioner, troubleshoot split ...

? 4:22
www.youtube.com/watch?v=i30rEvyuDKs
Feb 10, 2012 - Uploaded by Fully Airconditioned This video shows how to get fault code from remote control and reset fault, you ... Daikin Inverter AC Unit Fail - Moisture / Salts Damage to PCB ...

c4 error code has nothing to do with outdoor pcb. Use code 41 to check the value of the liquid line sensor and test with mulit meter. Pretty rare fault. Turn the power off for 5
Mins and reboot your system.

This is stating that there has been a low pressure error on the system.

This could have been caused by a blockage in the pipe work or a possible shortage of refrigerant. It could also be due to a fault with the low pressure sensor/switch.

Replaced new wire

Check yhr outdoor unit

J5 - Outdoor Malfunction of suction pipe thermistor

Outdoor unit · Intake piping thermistor (Th4)
Error (faulty connection, cut wire, short circuit, fault)

Check it and keep us updated.

According to the operation manual your system is low on refrigerant. You will need a technician show up and charge your unit and find the leak. This is a split system so leaks are very prominent.

"U0" Low pressure drop due to refrigerant shortage or

electronic expansion valve failure

A link to the system manual is below.

Hope this helps you with your issues...Jim...please leave a comment

http://www.daikinac.com/commercial/pdf/service_manual/SkyAir_SiUS25-501.pdf

the fault code for daikin u2 is power supply is too low the reason for this is complexed and needs an expert to fix it




hope this helps in some way

E4 Outdoor activation of low pressure switch/ less suction pressure.

Check back pressure, which should be 60 PSI when ambient temp 98 degree.If not Short of gas- find leak and arrest. And do gas charging. Even due to indoor coil dust blocked also e4 arise. Clean the coil and reset it.