Question about Mitsubishi Heating & Cooling
Noise is coming from interior unit
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: Heat pump is humming loud>
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.
Posted on Jan 22, 2009
Well you may want to have a tech come out and check the freon level, but mostly when going into defrost, some units make alot of noise, the freon is reversed in the unit by way of the reversing valve, it makes a whooshing sound like freon is draining off, as far as the knocking noise, could be as I said in the beginning, might be low on freon, but it could be that, this particular unit does this, I have had units make some really strange noises in the past but functioned perfectly, hope this helped, please let us know, thanks again,
Posted on Jan 24, 2009
SOURCE: fujitsu heat pump noise
i would check the blades on the condenser fan motor and make sure they are not hitting anything if they are not, spin the fan see if the fan spin freely, it should, if it doesn't it could be the bearing in the motor are dry and going bad
Posted on Jan 24, 2009
SOURCE: Loud noise
It is probably a rotary compressor unit.
They tend to make a start up noise.
Some technicians advocate adding a booster starting device to help the compressor start more quickly, thereby reducing startup noise.
Posted on Mar 12, 2009
CA: Compressor Discharge Sensor Fault
Contact a qualified service technician and have them replace this sensor.
Posted on May 04, 2010
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