sylverb
09-11-2016, 09:04 AM
Helloļ
I have a Fujitsu VRF system AJYA54LALH with 5x ARXB09 indoor units (duct type).
Since a week or so , everytime we switch on 2 or more indoor units to produce heat, the outdoor unit stops operation with error E63.1 (inverter error) and restart itself 10 minutes later. All the PCB cards are brand new including the Inverter and ACTPM.
For the voltage, when 2x units are on, we can read 247V DC between the red & black cable on the ACTPM board. The system starts shuting itself when we bring online the 3rd unit. We can then read 254-255V DC with no load, all remotes blinking.
Electric supply to the outdoor unit varies between 226-228V AC when 2-3 units are on.
When everything works well, with 5 units on, electric supply is around 230-232V AC.
This issue occurs at least 5-10x times a day since the cold weather started. It was doing the same during the summer on a very hot day but less often than now. It is also switching off during oil recovery. Strangely things are starting to work better around midnight and I'm getting 233V AC.
I'm starting to wonder if this is due to power supply dropping at times :( ... is there a setting on the outdoor unit to draw less power or any other remedy to stabilize power supply?
Thanks in advance for your help.
I have a Fujitsu VRF system AJYA54LALH with 5x ARXB09 indoor units (duct type).
Since a week or so , everytime we switch on 2 or more indoor units to produce heat, the outdoor unit stops operation with error E63.1 (inverter error) and restart itself 10 minutes later. All the PCB cards are brand new including the Inverter and ACTPM.
For the voltage, when 2x units are on, we can read 247V DC between the red & black cable on the ACTPM board. The system starts shuting itself when we bring online the 3rd unit. We can then read 254-255V DC with no load, all remotes blinking.
Electric supply to the outdoor unit varies between 226-228V AC when 2-3 units are on.
When everything works well, with 5 units on, electric supply is around 230-232V AC.
This issue occurs at least 5-10x times a day since the cold weather started. It was doing the same during the summer on a very hot day but less often than now. It is also switching off during oil recovery. Strangely things are starting to work better around midnight and I'm getting 233V AC.
I'm starting to wonder if this is due to power supply dropping at times :( ... is there a setting on the outdoor unit to draw less power or any other remedy to stabilize power supply?
Thanks in advance for your help.