Bosch REKM105 air conditioner thunder symbol

[admin]

Hi guys, this conditioner E-nr:PAM21011/02 is making me craisy.
When I start (doen’t matter what program:cooling,fun..) condenser fun is start to rotate but nothing else forward. Is not power up compressor, evaporator fun …nothing.
But after aprox. 10 seconds stoped and show on display thunder symbol.
I do not have a glue what this means about(which part is defectiv).
Please, I’ll wait direction…

[cab]

Re: Bosch REKM105 air conditioner thunder symbol

early warning system!!!!! 😆

[gegsy]

Re: Bosch REKM105 air conditioner thunder symbol

Hi
Could it be a lightning symbol? This would indicate a sensor failure.

If you press the “auto” and “on/off” an “F” code will be displayed to show you the sensor at fault.

F1 – Temperature sensor failure
F2 – Defrost sensor failure
F4 – Evaporater Fan failure

Hope that helps

Greg

[admin]

Thanks for advice but both sensors are on measure OK. (have same value at room temperature ) I will try advice from Greg.
On electric scheme is indicated the third sensor between two motors which I can not understand what is it and what it measure… I will investigate tomorow.
Greg, I do not find(or I’m stupid) “auto” and “F” buttons.

[gegsy]

Re: Bosch REKM105 air conditioner thunder symbol

Hi
The auto is one of the settings on the fan speed if that makes sense and the on/off is the symbol, “circle with a horizontal dash in its centre”.
Im just looking at the manual never seen one before 😀

I have added the missing error code in my previous post sorry.

Greg

[admin]

OK. I do set up the “auto”(fan) and “ON/OFF” and nothing…

[gegsy]

Re: Bosch REKM105 air conditioner thunder symbol

Hi
You have email, see what you think.

Greg

[admin]

I think GOOD
Like I write to you is showing all F’s: F1 ,F2, F4 one after another…
I need please forward help! (sensors value table) or what…

[gegsy]

Re: Bosch REKM105 air conditioner thunder symbol

Hi
Sensor charts emailed 😉

Greg

[admin]

Re: Bosch REKM105 air conditioner thunder symbol

I have changed temperature sensor with one 56KOhm resistor (because he is out of order). Checked defrost sensor in freezer and looks OK. But for the third sensor (HALL SENSOR) I do not have glue… 😳
After that I tried again and nothing changed he stops after 15 seconds and shows “lightning symbol”. Checking the error still all three are showed F1, F2 and F4.
Should I throw away??? Sow I fill (angry) 👿

[admin]

Re: Bosch REKM105 air conditioner thunder symbol

Today I opened motors block. I have seen what in electric diagram is called HALL sensor: is tacho from Evaporator motor and it is shorted between Out&Gnd. On device is writed U28/ i18 and I did not find its datasheet. 😆
Please can you identify what equivalent have like spare electronic part or it’s changeble with electronic tacho from Bosch motor tacho? 😕

[admin]

Re: Bosch REKM105 air conditioner thunder symbol

Like I said, I have changed electronic tacho “device”(HALL SENSOR in diagram) from one usual Bosch(washmachine) motor. It appear not any longer “light” alarm…. but still not working either compressor & condenser motor. In my mind I wanted to check if is something wrong (information from manual) about condenser motor spinning and temperature correspondence. So I put in serial my “faulty”( 5,7K instead 57K at 20’C) temperature sensor with that 57K resistor…. also nothing…
Finally I put the temperature sensor alone in socket I tried again and EVRIKA it workkkkk… 😛
I verified also in long time terms and also works… 😉

I have an question: What is correct? this value of sensor or the exchanged tacho has modified working parameters of electronics… 😉

ANYWAY for those ho will have this error perhaps will be useful this info…
BARON 8)

[gegsy]

Re: Bosch REKM105 air conditioner thunder symbol

baron wrote:ANYWAY for those ho will have this error perhaps will be useful this info…

Hi Baron
You are now the guru on this appliance so I will divert them to you in the future 😉

Greg

[admin]

Re: Bosch REKM105 air conditioner thunder symbol

Thanks Greg, but I need also flock… :rotfl:

[Author]

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