Air Conditioner not working?

Air Conditioning problem
1999 Honda Accord 4 cyl Two Wheel Drive 122000 miles

climate control comes on erratically, sometimes blinks, sometimes stays on and the AC works, then may randomly go off.

Sometimes tapping the control unit causes it to come on and function again. When on, the AC seems to work properly.

There are many questions about this online, but no one has explained the cause(s).

1. Loose connection?

2. Open/loose solder connection on the printed circuit board?

3. Sticky relay(s)?

4. System leaks/low pressure?

Thanks for that info. Is it a DIY repair? If not, any idea of the replacement cost of the unit?

AC button, recirulate botton and selector button blink with the engine running. Prior to blinking the AC would shut off but then randomly turn on. The AC blows cold when it is on and the lights are not blinking but with the blinking lights it does not blow cold. I also can't change the selector to defrost, dash -floor or defrost -floor mode, nor can I turn off the recirculate botton. Thanks in advance for your help. I live in Key West Florida and it is a high humidity area.

Since 2 weeks my car A/C is not working some times. It happens suddenly. The A/C switch doesnt show green light and I dont get cool air in side. When I start the A/C after some hours it works properly blowing cold air.I checked with a A/C recharger and it indicated that I have enough refrigerant. Can any body tell me whats going on with my car A/C. Thank you.

Thank you !

The AC in my Mother-In-Law's Accord is not operating properly.
When the car is first started you can hear the cooling fans and the AC compressor come on. After about 4-5 seconds the cooling fans and the compressor shut off. Once they go off the inside fan comes on but only on full auto or on high fan. The compressor and outside cooling fans do not come back on. If I take the ignition and bump the ignition between run and start the compressor and cooling fans come on for 4-5 seconds and then shuts off. When the inside blower fan comes on the AC is cold. Anothe thing I noticed is that the recirculate light cycles on/off depending on which fans are running.

The othe rday after driving only a few miles a hissing and smoke came from under the hood. Then a blast of cold air came from the vents. The A/C was on at the time. Looking under the hood there was clear oil below the compressor relief value. All seems fine now. The A/C is not as cold as it has been, but the compressor clutch still enguages. What is the function of the relief value and what could cause it of open for a short period of time? What should I have checked?

When we start the car the light on the AC control panel is normal. We can turn the AC on. After running a while AC working stop and the lighting on the panel is off too. A few week ago, we found it could happen if we push the inner cycling button on. But now, AC will stop working no matter what we push any button on the control panel or not.
If the inner cabin temperature is too high, AC can not be turned on when we start engine.

Thanks.

I press the air control ( on the dash)--the light does not go on no cold air--the same with the heat--no light on no heat-- the fan blows but no air comes out of the dash vents or front window vents-- the air (not hot or cold comes out the floor vents---

Air Conditioning problem
1999 Honda Accord 4 cyl Two Wheel Drive Automatic 89.000 miles

how much freon do you put in the car air conditioner not blowing out cold air

When you turn on the a/c the a/c light blinks on and off. The fan blows but no cold air. Could this be a wiring problem?