AC light blinks non-stop

[Rogan]

My buddy has an '04 3500SRW. His AC and recirc(?) LEDs blink constantly, but everything seems to work. Any idea as to what the reason is, and what is needed to fix it?Thanks,Rick

[mopartechnician]

If i remember right, that means there is a fault in the a/c system

[Rogan]

I figured as much lol j/kThe AC functions, and such, just trying to figure out what is causing the blinking, and how best to diagnose what it actually is.

[mopartechnician]

I will look when i get home. For some reason my phone wont bring up my fsm

[Mopar1973Man]

My buddy has an '04 3500SRW. His AC and recirc(?) LEDs blink constantly, but everything seems to work. Any idea as to what the reason is, and what is needed to fix it? Thanks, Rick

Never seen one... Could you post a pic of this...

[Rogan]

pic of the climate control? or a vid of the blinking?

Here's what the climate control looks like:

the two LEDs above each of the right buttons are what blinks

[Mopar1973Man]

I would assume it would be part of the central timer computer like on the 2nd gens (if this still holds true).

[dorkweed]

I would assume it would be part of the central timer computer like on the 2nd gens (if this still holds true).

I don't know if that's the case or not Mike.

pic of the climate control? or a vid of the blinking?

Here's what the climate control looks like:

the two LEDs above each of the right buttons are what blinks

That's the same configuration that I have in my '04.5. No blinking here, which leads me to think of bad switches or frayed wires letting power go to the LED.

Does it blink in a rhythmic manner or voluntary??

[Rogan]

Rhythmic. on the move...

[mopartechnician]

I cant find it in the service manual. The only thing I found was the a/c light flashing during a a/c performance test that is performed with the drb. If the test fails, then the light keeps flashing. I would probably try unhooking the batteries and ground out the power wire to drain all the memories. And also unhook the hvac controller and see if there are any burnt wires or pins.