Thermoking SL 400E

[demicv]

Hi All

I am having a problem with a TK SL 400E SmartReefer2 bringing up fault code 11,
which means :Unit Controlling on Alternate Sensor ,...Does anyone know what they mean

[Robert Hilton]

Most likely is the return air sensor is defective and it's controlling on discharge temperature. I would imagine you also have code 03 (return) in there somewhere. Check on the display if the box temperature reading is correct.

[demicv]

you're right, the problem is that there are three failures 03,203 and 11,but one that is not erase its 11.
anyway I'm a beginner so I think I'll start by changing all the sensors,
Thank you very much for your advice

[Robert Hilton]

Be careful changing a return sensor as they are graded. You will have to recalibrate the sensor in the maintenance menu

[demicv]

could you be a little more explicit,

[demicv]

is a complicated procedure? problem is that this equipment is not worked well for a long time, many "experts" have tried to fix it, The return sensors might not even be good, because I found removed from the circuit

[tony2009]

G'day demicv;

I think what Robert's trying to say, is that the sensor has a reference code on it (eg; 5G, 2B - something like that.) This needs to be calibrated into the controller to ensure the correct operation of the unit. These units also have similar sensors which are not marked with such a code and as such they don't need to be calibrated but their functions are quite different, such as ambient temperature.

You will need to refer to the green controller manual for instruction on the calibrating these sensors into the controller.

Best regards...

[demicv]

can anyone help me to get into guarded access
mode so I can recalibrate the return air sensor,its a SR2 processor

[demicv]

or if anyone has a service manual for TK SL 400E SR2

[deanCool]

This unit will bring up these codes due to a difference between the two return air sensors. There is two sensors one for control and one for display. Check in the sensor menu for both return sensors. It will more than likely need alarm codes cleared.

[Robert Hilton]

Sorry chaps been away in Germany for a couple of days.
The TK graded sensors have a number and letter code eg, 6H or 4L. The numbers being 1-9 and the letters H, L or nothing (meaning High, Low or middle) Once in guarded access you can choose sensor calibration, the sensor to be calibrated and then adjust and set. To enter guarded access:
Unit on not running
Press menu and enter operaters menu
Press the blank button and exit together to enter the maintenance menu
Scroll to sensor calibrate and press select
Scroll to the correct sensor and select
Adjust to new sensor and accept.

[demicv]

Thanks a lot for the advices, I did everything you told me and it's working well.

[tony2009]

What's your email address and I'll shoot over the service manual?
Tony...

[anashadaya]

hi you can sent me service manual for sl 400e please.
my email: anashadaya@hotmail.com
thank you.