Thermoking, MP3000

[teguh]

I have problem Thermoking's container unit with MP3000 controller. Alarm low voltage appear and engine shut down. Each phase of power supply input is normally 380v/50hz but display is incorrectly read. There was read L1/ 350V L2/360 L3/ 380V.
No failure report of Micro controller, Relay board, cable and display when tested use MP3000 tester. This testing is TK procedure.

What is the possible cause?

Teguh

[reefermechanic]

hi teguh,

thermoking MP3000 unit runs above 350 V.If power supply below 350 V AC unit doesn't work.I seen same problem next month.You have to replace relay board.Relay board is problem.Good luck.

Best regards.

Reefer Mechanic.

[teguh]

Hi Sir,
Thank you for your advice. You' re right
I just tried replace with other relay board. Engine could normally run.

So why the tester couldn't detect the damage? Tester reported pass.

Teguh

[reefermechanic]

Hi Teguh,

I did happyfull for your problem is ok.I think tester only check to all communication beetween relay board and controller.Also relay board working but current sensor reading defect.İ think for that cause you seen pass by tester.

If you have problem about all reefer units you may ask me.

Have a nice work.

Reefer Mechanic.

[teguh]

Hi Sir,
As attached photo, which the current sensor/ voltage sensor component? I 'd never repaired by replace partial component of relay board.


Rgds
Teguh

[reefermechanic]

Hi Teguh,

I 'd never repaired by replace partial component of relay board too.But blue parts may be ...If you want you cabntry its.Also i m not professinoal for electronic repair:)))))

I m working beetween 10:30 am and 20:30 pm for GMT..You can send a mail to me.

serkan.humasalar@ardep.com.tr

reefer mechanic

[teguh]

Hi Sir.
Thank you for quick reply. Also thank for the e mail address.

B Rgds
Teguh

[Mungo]

Current sensing component on the relay board is the 3 relays and the small transformer beside the 400v terminals on top of relay board. New Relay boards no longer have these components and phase sensing is now done in the controller so software needs to be up to date for all to work well

[teguh]

Hi Mungo,
Nice to meet you. Thank you for your information.


B Rgds
Teguh