Hello Yogesh...
Unless you are familiar with the BASICS of REFRIGERATION...
"H3" ERROR CODE means it is "Out of ORDER"...
Broken: Needs repair.
By searching the internet "split A/C " It defines a
COMPRESSOR overload protection is trying to
SAVE your equipment FROM SELF DESTRUCTION.
See second detail sheet (below)
"COMPRESSER"
Is the heart of MOST modern refrigeration systems.
In a SPLIT system it is the outside unit with the FAN
that should be running when the COMPRESSER is
in action. Typically then compressed & COOLED
REFRIGERANT is then piped into a cooling element
EXACTLY LIKE MOST REFRIGERATORS where the
cooling takes place (expansion valve and evaporator).
Treated AIR (indoor) is then blown through the
evaporator... cooling the room and warming the
refrigerant (which continues to cycle back to the
outside unit where the compressing cycle
continues until the INSIDE temperature is
achieved... (thermostat on the wall)
"COMBINED"
pretty much means EVERYTHING but those combined refrigeration units seen WORLD-WIDE HANGING OUT OF WINDOWS... or on roof-tops with DUCTING for
"treated AIR" to be pumped where needed.
Similarly heat pumps simply have reversible valves...
which turn the coils around (functionally).
There too are split-system (inside/outside) & combined units.
Excellent refrigeration primer (below)
https://camec.com/cameccatalogue/documents/000948_IbisTechManual1.pdf
Alarm Codes
Gree Air Conditioners Error Codes
Hope this helps.
Carnac the Magnificent
SOURCE: Bluestar split ac indoor unit making abnormal
From your details i can observe the blower motor bearing worn out. or its side bushes in which there is small bearing that may be worn out. Replace it. Finally check for correct voltage too.
SOURCE: My bluestar split ac 3.ton showing on display light blinking..what is problem
could be a control board either in the inside unit or the outside unit
could be a simple start/run capacitor for the out side unit
best get a technician out to check it out so that you get the correct diagnosis and quote for repair.
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