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Re: Laguna II 1.8 16v , 2000 obrtaja ???
^ pritiske je moj prijatelj koji radi klime ispitao i rekao da je sve u redu. mada se ja u to ne razumem puno, te da nije sada na odmoru bas bih ga konkretno pitao sta je radio, te citirao ovde ...
U svakom slucaju prenecu mu ovo sto si napisao kada se vrati. Interesuje me dali moze da bude mozda ovo, tj. dali je to to
... citiram odgovor koji sam dobio na reno forumu :
"Drugi odgovor je mnogo opasniji (skuplji) ali čini mi se da dolazi od tehnički potkovanijeg čoveka:
"So, on my car it works like this: The ECC-unit (the AC-panel on the dash, with the buttons and display) will send a signal to energize an electromagnetic valve placed on the compressor if engine speed is above 2300rpm. The signal is reset when rpm falls below 2000rpm. When the signal is active the electromagnetic valve opens and makes a bypass in the refrigerant circuit, and by doing so, the capacity of the compressor will decrease. Since the rpm is above 2000, the cooling capacity still will be enough.
The faults on my car: No cooling above 2300rpm, the compressor clutch simply disengaged over 2300rpm. The car had set the faultcode DF030 which means error in the "variable capacity" function. The workshop manual suggests to measure the resistance over the coil in the solenoid to the electromagnetic valve. If resistance isn't 18,5 +-0,5Ohms, the compressor should be replaced. My car measured about 2 ohms.
The compressor was replaced on my car but the same fault still existed. The shop then replaced the ECC-unit, and then it worked.
Reason for this is that when resistance in the coil changes from 18 to 2 ohms, the current in this circuit will increase from about 0,7 to 6 Amps. The circuit has a 20Amp fuse (also feeds the magnetic clutch). This abnormal current fries the electronics in the ECC-unit. Therefore, the ECC-unit has to be replaced aswell. So the failure of the ECC-unit is a secondary fault caused by the failing solenoid coil.
We have investigated this error quite alot and you can read about it in forums in at least Sweden, Norway, France, UK and Holland. But no official acknowledgement from Renault.."
Suština je da naše klime imaju funkciju varijabilnog kapaciteta tj da iznad 2300rpm se njihov kapacitet smanjuje tako što elektromagnetni ventil koji je jna kompresoru tada dobija signal i premošćuje (bypass in the refrigerant circuit) rashladno kolo, ali kako (kod njega) otpor na namotaju tog ventila iznosi samo 2 oma (umesto propisanih 18,5) to će reći i da je struja u njegovom kolu umesto 0,7A čak 6A što je moguće jer je osigurač od 20A. Ovolika struja je spalila kolo u ECC-u (tj cela upravljačka jedinica klime u kabini - ono sa displejom (ko ima dvozonsku klimu) i dugmićima iznad pepeljare) što je značilo da je on rešio problem tek kada je zamenio i kompresor i ECC!?"
????
^ pritiske je moj prijatelj koji radi klime ispitao i rekao da je sve u redu. mada se ja u to ne razumem puno, te da nije sada na odmoru bas bih ga konkretno pitao sta je radio, te citirao ovde ...
U svakom slucaju prenecu mu ovo sto si napisao kada se vrati. Interesuje me dali moze da bude mozda ovo, tj. dali je to to
... citiram odgovor koji sam dobio na reno forumu :"Drugi odgovor je mnogo opasniji (skuplji) ali čini mi se da dolazi od tehnički potkovanijeg čoveka:
"So, on my car it works like this: The ECC-unit (the AC-panel on the dash, with the buttons and display) will send a signal to energize an electromagnetic valve placed on the compressor if engine speed is above 2300rpm. The signal is reset when rpm falls below 2000rpm. When the signal is active the electromagnetic valve opens and makes a bypass in the refrigerant circuit, and by doing so, the capacity of the compressor will decrease. Since the rpm is above 2000, the cooling capacity still will be enough.
The faults on my car: No cooling above 2300rpm, the compressor clutch simply disengaged over 2300rpm. The car had set the faultcode DF030 which means error in the "variable capacity" function. The workshop manual suggests to measure the resistance over the coil in the solenoid to the electromagnetic valve. If resistance isn't 18,5 +-0,5Ohms, the compressor should be replaced. My car measured about 2 ohms.
The compressor was replaced on my car but the same fault still existed. The shop then replaced the ECC-unit, and then it worked.
Reason for this is that when resistance in the coil changes from 18 to 2 ohms, the current in this circuit will increase from about 0,7 to 6 Amps. The circuit has a 20Amp fuse (also feeds the magnetic clutch). This abnormal current fries the electronics in the ECC-unit. Therefore, the ECC-unit has to be replaced aswell. So the failure of the ECC-unit is a secondary fault caused by the failing solenoid coil.
We have investigated this error quite alot and you can read about it in forums in at least Sweden, Norway, France, UK and Holland. But no official acknowledgement from Renault.."
Suština je da naše klime imaju funkciju varijabilnog kapaciteta tj da iznad 2300rpm se njihov kapacitet smanjuje tako što elektromagnetni ventil koji je jna kompresoru tada dobija signal i premošćuje (bypass in the refrigerant circuit) rashladno kolo, ali kako (kod njega) otpor na namotaju tog ventila iznosi samo 2 oma (umesto propisanih 18,5) to će reći i da je struja u njegovom kolu umesto 0,7A čak 6A što je moguće jer je osigurač od 20A. Ovolika struja je spalila kolo u ECC-u (tj cela upravljačka jedinica klime u kabini - ono sa displejom (ko ima dvozonsku klimu) i dugmićima iznad pepeljare) što je značilo da je on rešio problem tek kada je zamenio i kompresor i ECC!?"
????
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