Results 1 to 13 of 13
Thread: Daikin super inverter
-
29-11-2017, 07:46 PM #1
Daikin super inverter
Hi guys, I'm having a issue with a daikin super inverter. It keeps showing a e4 fault. I have decanted the unit and charged by weight. It was all ok. I have checked my pressure transducers and they are fine. I have also changed the board ( swapped from a redundant unit)
Whenever I arrive it is in a e4 fault (low pressure) when I reset the unit it works fine but the condenser freezes up very quickly.
I'm guessing I have a restriction or a faulty eev.
Just like to know your thoughts.
Thanks
-
29-11-2017, 11:44 PM #2
Re: Daikin super inverter
Have you checked the temperature sensors?
Brian - Newton Abbot, Devon, UK
Retired March 2015
-
30-11-2017, 07:14 AM #3
Re: Daikin super inverter
Yeah I've changed the thermistors but again from the redundant unit.
-
30-11-2017, 10:38 AM #4
-
30-11-2017, 10:59 AM #5
Re: Daikin super inverter
Yeah. It's on a biddle door curtain so the shop would kill me if I put it in cooling.
-
30-11-2017, 11:02 AM #6
Re: Daikin super inverter
Do you have a full model number?
-
30-11-2017, 03:07 PM #7
Re: Daikin super inverter
Low pressure sensor?
http://www.refrigeration-engineer.co...-E4&highlight=
-
30-11-2017, 07:08 PM #8
Re: Daikin super inverter
Tested the low pressure sensor already. Mod rzq250c7y1b biddle is UK.city m-200-dk-f
-
30-11-2017, 11:26 PM #9
Re: Daikin super inverter
Have you checked that the Biddle unit is clean and with the correct airflow.
Brian - Newton Abbot, Devon, UK
Retired March 2015
-
01-12-2017, 07:18 AM #10
Re: Daikin super inverter
Yeah filters and coil clear with great airflow
-
01-12-2017, 08:37 AM #11
Re: Daikin super inverter
What is the outdoor temperature?
Last edited by narkom; 01-12-2017 at 09:04 AM.
-
01-12-2017, 08:51 AM #12
Re: Daikin super inverter
On page 24 the piping diagram shows an expansion valve feeding the outdoor coil in heating mode. This may be starving your coil and causing the low pressure fault http://www.daikintech.co.uk/Data/Spl...B_Databook.pdf
-
01-12-2017, 12:14 PM #13
Re: Daikin super inverter
Cheers Frank, thought it was the expansion valve. I'll replace it and keep you updated.