Rattling sound on the outside fan of a Comfortmaker high efficiency heat pump
Comfortmaker high efficiency heat pump makes an intermittent rattling sound in the outside component. I took the top off to expose the fan and saw where the outside edges of both blades of the fan are slightly damaged. It must be rubbing against the outside casing but I could not see where it's rubbing. I bent the blades very slightly at the edges and the rattling stopped. Is this a common problem? Does it matter if I bent the edges of the blades a tiny bit?
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The type of refrigerator you have uses a solid-state device which likely uses a Peltier effect element.
This uses electricity to transfer heat and cold on opposite sides of the element, absorbing heat from within and radiating it from the other side being cooled by the fan.
With no moving parts other than the fan, they are very reliable but also very dependent on ridding the element of the absorbed heat which necessitates fairly high air flow to function properly.
If a fan was used that produced less noise, the airflow might be too little to allow the element to cool the interior efficiently.
Unless the fan has a defective bearing, which would reveal itself by a rattling sound, it is probably still working as it should.
you can check your heat pump on the outside by turning off the power and listening to see if it makes a whoosh sound. and then turn it back on you should hear it kick in. Is the outside unit running? Sounds like an electrical problem maybe in the breaker or the contactor on the inside of the unit. This is where the 24 volts from the thermostat call to the 240 volts to kick on the condenser fan and compressor. Be real careful in messing with this because of the high voltage.
From what you describe is happening, I would say that it is the fan that is causing the noise, not neccesserily the oven fan, because there is an external cooling fan as well, and these are the only moving parts that could cause a noise.
Hope this helps.
no it would not be the timing belt making a rattling noise it couldn possible be you heat shield around your break rotor it could be someting having to do with ur suspenion like a spring maybe what kind of rattling noise? or a regular heat shield but loose in that particular area
When the heat is not on. Go to the T-stat and turn the fan to the on position. With the blower now running is it making the noise? If so you probably either have something in there such as the filter that was mentioned, a piece of paper etc. or one or more of the blades on the blower wheel is vibrating. Don't let the condition persist w/o having it checked out or you may turn a simple fix into a costly one.
If the unit is new and tilted enough toward the outside, the rain should not be a factor as far as water blowing out. It will make some rattling noises on the outside more so when its raining or high humidity because the outside fan throws water onto the condenser coil. Sounds like to me that its not draining to the outside.. It shouldn't be dirty enough for the drain paths to be filled with crud. Tilting it more to the outside should fix it. Hope this helps.