Waeco CF-35 / CF40

DeBe · Guru

RE: Waeco CF-35 / CF40

DeBe · Guru

Yours should have a 101N0500 controller like this fitted. If you have 12V at the 12V terminals & it wont go, then the unit is faulty & 101N0500 Controler.8.JPG will need replacing. The one in the picture works on 12V DC but the 240V AC side is faulty (Major Meltdown)

dfwcomputer · Member

yer thats the one i have, it has 12v at the terminals so i assume i need a new 101N0500 controller, if you can still get them and there worth buying :(

DeBe · Guru

Yes they are still available but not cheep.

dfwcomputer · Member

probably better off running inverter in car an using 240v

would it be better option to get the circuit board looked at my electronics guy or just run inverter

-- Edited by dfwcomputer on Wednesday 9th of December 2015 09:18:25 PM

DeBe · Guru

You could try your local electronics guy. This is whats inside it. 101N0500 Controler.11.jpg 101N0500 controler.13.jpg

DeBe · Guru

I did mark some of the components on the 12V side of things some time ago. 101N0500 Controler.14.JPG 101N0500 Controler.15.JPG

dfwcomputer · Member

DeBe wrote:
I did mark some of the components on the 12V side of things some time ago.

Ive tested both these items and they both seem to have 12v on each side.Do you know what they are worth off the top of your head, I cant seem to find one for sale.

DeBe · Guru

Heres a picture of the 2 components. Voltage was measured using 12V DC to power it. Voltages as marked. Parts probably available on Ebay cheep. DANFOSS CONTROL 101NO500. A.JPG DANFOSS CONTROL 101NO500. c.jpg

dfwcomputer · Member

mmmm the IRL3705ZS at the back has 12v like it should but it also has 11.78v on left pin and 12.6v on right pin

also the 12CWQ10FN is working ok

if that makes sense :)

I did find a replacement but it is 86A not 75A Click Here

-- Edited by dfwcomputer on Thursday 10th of December 2015 05:22:25 PM

DeBe · Guru

The replacement one should be fine. I am interested in your outcomes as to wheather it fixes the problem. It may well be what switches the power feed from the 240V supply to the 12V supply. I cant check that as mine only works on 12V now as the 240V AC power supply has burnt out so I removed most of those parts from the board.

-- Edited by DeBe on Thursday 10th of December 2015 05:54:16 PM

dfwcomputer · Member

yer for $4 ill give it ago and report back, might take a few days, thanks for the help

DeBe · Guru

This is a block diagram of those units, & that's all ive got. 101N0500 Block diag.2.jpg

dfwcomputer · Member

ok thankyou

dfwcomputer · Member

can you just confirm which one of those transistors you think it is, I believe it the second one but the guy at rs said he thinks the first one so im not sure. (i mean which transistor in the link i posted above)

-- Edited by dfwcomputer on Friday 11th of December 2015 10:14:17 AM

DeBe · Guru

Its the first one. Heres some voltages & CRO waveform I measured with the unit powering a compressor. The MOSFET is obviously the 27V power supply when powered with 12V. IVE incorrectly marked the 2 components. sorry. 101NO500. 27V supply.jpg IRL3705ZS MOSFET.27V smps.JPG

-- Edited by DeBe on Friday 11th of December 2015 03:48:34 PM

DeBe · Guru

This is the correct picture. Cant delete the previous incorrect one. 101NO500.27V supply..jpg

dfwcomputer · Member

haha ok no problem m8 ill check late this arvo when i get home from work, thanks

dfwcomputer · Member

ok based on the last image you posted, all of the points i tested had 12.5v except for the one you have marked as 2.8v mine had 12.1v.

not sure what that means but i didnt have 27v on any of them.

DeBe · Guru

Right then the MOSFET is probably faulty as it is probably what generates the 27V to run the compressor on 12V. When on 240v, the 27V is generated by the 240V SMPS.