Airconditioner screen blank
05-26-2017, 02:01 AM
#1
Airconditioner screen blank
Can someone send me in the right direction. I have tried searching in vain. My battery went dead. I charged it. Now my aircon screen is blank. Checked all the relevant fuses and they all good. The fan still blows but I have no control over it. Seems like there should be some kinda reset.
05-26-2017, 09:06 AM
#2
MBWorld Fanatic!
I would suggest rechecking the HVAC fuses.
Specifically, in fuse block 1 (located in the engine compartment):
#20 (powers the push button control module)
#25 (powers the blower motor)
#26 (powers the push button control module)
#38 (powers the auxiliary fan)
Note: Best way is to use a multimeter (e.g. sometimes an internal break is difficult to see).
When you charged the battery, was the battery still connected to the vehicle electrical system or was it isolated? Some chargers supply in excess of 14 volts, which can damage sensitive electronic circuits.
Specifically, in fuse block 1 (located in the engine compartment):
#20 (powers the push button control module)
#25 (powers the blower motor)
#26 (powers the push button control module)
#38 (powers the auxiliary fan)
Note: Best way is to use a multimeter (e.g. sometimes an internal break is difficult to see).
When you charged the battery, was the battery still connected to the vehicle electrical system or was it isolated? Some chargers supply in excess of 14 volts, which can damage sensitive electronic circuits.
Last edited by Serndipity; 05-27-2017 at 12:44 PM.
06-01-2017, 01:48 AM
#3
Tx for the reply. Checked all fuses with meter. All ok. Battery was connected when charging, supposedly a smart charger. Anyhow do you think the screen is blown. The fan blows when it wants. My aircon does need charging for a while now but never affected anything before.
06-18-2017, 12:58 AM
#4
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2002 CLK 55 AMG cabriolet Eurocharged
out of curiosity, unplug the connector on the receiver drier for pressure sensor and see if it comes back.
I have seen this before. cant remember what caused it though. cycle the light switch as well.
There is a calibration procedure once it comes back
I have seen this before. cant remember what caused it though. cycle the light switch as well.
There is a calibration procedure once it comes back
Last edited by GatorMB; 06-18-2017 at 01:03 AM. Reason: added content
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bar1135 (07-06-2017)
07-06-2017, 02:22 AM
#5
Tx for the reply."receiver drier for pressure sensor"." cycle the light switch" I cannot find how and where these are in the forums. Please can you send me in the right direction.
