Can somebody help me identify this capacitor? As you can see it does not say how many uF it is. AC fan stopped running (as I posted a few days ago) but fan starts if I give it a push. So I’d like to change the capacitor first? But read on… [URL=http://s490.photobucket.com/user/ThomasE_1/media/IMG_0616.jpg.html][IMG]http://i490.photobucket.com/albums/rr270/ThomasE_1/IMG_0616.jpg[/IMG][/URL] [URL=http://s490.photobucket.com/user/ThomasE_1/media/IMG_0615.jpg.html][IMG]http://i490.photobucket.com/albums/rr270/ThomasE_1/IMG_0615.jpg[/IMG][/URL] [URL=http://s490.photobucket.com/user/ThomasE_1/media/IMG_0617.jpg.html][IMG]http://i490.photobucket.com/albums/rr270/ThomasE_1/IMG_0617.jpg[/IMG][/URL] However I tested the capacitor using my tongue to charge it through a 9V battery and I can feel a brief jolt when charging, and then again when discharging. I also used a digital multimeter set on 2M resistance to charge the capacitor one way and then reverse (I assumed it was charged when the resistance reached over 2M and the meter went off scale. Here is how long it took: “C” to “Herm” terminals: 64 seconds “C” to “Fan” terminals: 7 seconds I have no way of telling if this is correct as I imagine it depends on both the capacitance (which I don’t know) and the effective internal resistance of my cheap digital multimeter. However both tests seem to show that the two sides of the capacitor can hold some charge. Not? So perhaps the capacitor is not bad. Perhaps it’s the motor which I noticed has developed a little bit of resistance; but not much really, seems like it should be able to overcome that, even with its initial lower torque, not? It’s from this air conditioning unit. [URL=http://s490.photobucket.com/user/ThomasE_1/media/IMG_0618.jpg.html][IMG]http://i490.photobucket.com/albums/rr270/ThomasE_1/IMG_0618.jpg[/IMG][/URL] And here is the schematic. No capacitance mentioned on schematic either. [URL=http://s490.photobucket.com/user/ThomasE_1/media/74090cb0-9e7a-4ea7-b2be-f3ceb6b97cbe.jpg.html][IMG]http://i490.photobucket.com/albums/rr270/ThomasE_1/74090cb0-9e7a-4ea7-b2be-f3ceb6b97cbe.jpg[/IMG][/URL] From the schematic seems like this is a combo start capacitor for the fan and run capacitor for the compressor? Or start capacitor for both? Or run capacitor for both? I don’t understand, if someone could explain I’d appreciate. Thanks.

Equipment: Amana RHE36A2A heat pump and Amana BBC36A2A Air Handler, installed May 2002 Symptoms: AC works some of the time then air handler fan stops working. To protect compressor I then turn off AC. I try turning it on again every few hours until it works. About 16-24 hours later turning AC on again may cause fan to restart and AC works fine again for 1/2 day to 8 days. Sometimes the fan tries to restart but cant get going. Speeds up then turns off, repeats this cycle 4 or 5 times, then stops. Problem is severe now (Arizona summer). Problem started at tail end of winter season when heat pump was in heating mode. Diagnosis attempts: Thermostat was changed but made no difference. When not working manually switching on fan at thermostat causes relay to click on air handler interface board, but fan stays off. 24v ac measured between R & C on control board. 0.36v between R & G when switch in fan on mode. Both seem correct. Air handler control board has an LED that flashes correctly to indicate board is working. Disconnecting thermistor wires causes control board to correctly flash at a different rate. Measured resistance of thermistor, seems to be correct for the ambient temperature. Interface board also has a LED to flash the CFM rate. When AC not working LED can be seen flickering in dim light. Suspected interface board so disconnected then reconnected cables to check for bad connections. It may have helped a little for a while, but maybe wishful thinking. Fan runs freely, no unusual noises, no jerkiness when fan switch on attempted. Called out AC repair technician but unit decided to work when he came!, and repeated on/off attempts did not reproduce the problem. So no fault detection possible. Technician suspects interface board or bad motor. Other info: Compressor fan capacitor replaced last year to fix compressor fan problem. Compressor works fine now. So to avoid another wasted service charge does anyone have any further ideas? Many thanks in advance for your help. Brian