gdeangel
06-27-2014, 02:50 PM
Hello - I have an Amana / Maytag Model ASD2624HEB side-by-side refrigerator which started to make a knocking sound when using the water dispenser. It is about 9 years old.
It sounded like classic water hammer at the filter. The first time it happened, I removed the filter, dumped it out and then filled it with water at the tap, reinstalled, and the problem was gone. I think that was just dumb luck. The second time it happened, as I removed the filter, there was a "pop" sound of pressurized air being released. I proceeded to seat and unseat (tighten and loosen) the filter a few times until there was not more air-pop sound, then reinstalled the filter and everything was fine for another few days. Now the problem is back. This time the problem persists even after air-bleeding as above. I tried with the bypass cap in place of the filter, and the knocking is still there. It happened after dumping out the whole ice bin, but as it was making the new ice there was no water hammer. It only seems to happen when dispensing water. Also with the filter / bypass cap OFF, if I push on either nub-valve (there are two cross shaped nubs arranged vertically) to manually activate them, the water comes squirting out in bursts and the knocking sound happens just like it does when you activate the water flow from the door dispenser.
I got here following a thread on another forum that described similar symptoms, but apparently the appliance forum there shut down. That one suggests it could be (a) incorrect filter, (b) filter head, (c) lines, (d) shut off valve, and (e) fill valves. I did change the filter a few months ago, but the filter was purchased in a lot with others that have all worked fine. The case on that other forum was the filter head, but in that case the knocking went away when the bypass cap was installed. I searched repair clinic and there seems to be only one inlet valve for both water and ice - and also since the problem happens even when manually actuating the filter head, I'm inclined to rule out the valve electronics. I have no reason to suspect the shut off valve which is hasn't been touched in 8+ years. That leaves me without a clear idea of what I should start with.
Pulling it out of the cabinet space to get at the guts is going be a real pain... putting it off until I know where to begin. Thanks in advance for advice!
It sounded like classic water hammer at the filter. The first time it happened, I removed the filter, dumped it out and then filled it with water at the tap, reinstalled, and the problem was gone. I think that was just dumb luck. The second time it happened, as I removed the filter, there was a "pop" sound of pressurized air being released. I proceeded to seat and unseat (tighten and loosen) the filter a few times until there was not more air-pop sound, then reinstalled the filter and everything was fine for another few days. Now the problem is back. This time the problem persists even after air-bleeding as above. I tried with the bypass cap in place of the filter, and the knocking is still there. It happened after dumping out the whole ice bin, but as it was making the new ice there was no water hammer. It only seems to happen when dispensing water. Also with the filter / bypass cap OFF, if I push on either nub-valve (there are two cross shaped nubs arranged vertically) to manually activate them, the water comes squirting out in bursts and the knocking sound happens just like it does when you activate the water flow from the door dispenser.
I got here following a thread on another forum that described similar symptoms, but apparently the appliance forum there shut down. That one suggests it could be (a) incorrect filter, (b) filter head, (c) lines, (d) shut off valve, and (e) fill valves. I did change the filter a few months ago, but the filter was purchased in a lot with others that have all worked fine. The case on that other forum was the filter head, but in that case the knocking went away when the bypass cap was installed. I searched repair clinic and there seems to be only one inlet valve for both water and ice - and also since the problem happens even when manually actuating the filter head, I'm inclined to rule out the valve electronics. I have no reason to suspect the shut off valve which is hasn't been touched in 8+ years. That leaves me without a clear idea of what I should start with.
Pulling it out of the cabinet space to get at the guts is going be a real pain... putting it off until I know where to begin. Thanks in advance for advice!