this mini split air conditioner circuit first
error on display shows an eh00 error code through these error codes, the unit tries to tell
you the actual fault of the unit, if you do not know the meaning of these particular error
codes. It will be tough for you to solve the unit's problem. For this purpose, you first need
to recognize the PCB, the best way to recognize the circuit board is through its manufacturing
code number this helps you find the PCB type and Manufacturing details this is the indoor
unit's PCB code number pause the video and you can easily read the number of pcbs the outdoor
units PCB code number is this eh is the indoor unit error most indoor units have flash memory
systems technically we call it eom and it stands for electrically erasable programmable readon
memory this is the flash memory installed here in the PCB suppose it is corrupted internally or
physically damaged or short-circuited or does not have the operating voltages to operate it in that
case an e00 error can be displayed on the indoor unit you should have a multimeter and set it on
the DC voltages attach the main Electric Supply to the PCB and you should check the voltages on
the eom through which you can find the fault or you can even decide the next move to repair
the circuit board for this purpose check the four number pin which is the ground pin but here
all four pins are attached and grounded although one two or three are address function pins but
here they are joined together now we switch on the PCB all these pins are joined Direct ly and we
keep the multimeter probe here put the multimeter another Probe on pin 8 and as you can see 4.46
DC volts are present on both pins it means its operating volts are available if you find the
correct operating voltages on the pins besides this if you still have a problem with the e00
error you must change the eom directly but before changing the IC you should have to reprogram the
particular IC you should already have its correct program program the new eom and replace it with
the old one the circuit board will start to work and the eh0 error code will vanish the next error
that is shown on the display is EC 53 let me tell you about this error as well during this error
the indoor circuit is working the compressor has also started to work it has no issue the error
is still displayed the LED light on the outdoor circuit board is blinking rapidly which means
that the circuit board has a problem the outdoor circuit board sensor with a white connector which
is used to check the ambient temperature if this sensor is missing from the circuit board or is
short circuited then this EC 53 error will be shown on the display of your mini split air
conditioner now the display is showing an EC 51 error code this error is not of the indoor
circuit but of the outdoor circuit board when this eom of the outdoor unit gets corrupted or
short circuited then this error will be displayed on the display I will check the operating voltages
on this IC if the operating voltages are missing then it means that something else in the circuit
board is faulty I have passed electricity through the circuit board the circuit board has powered
on I will put the multimeter black Probe on the four number pin of the IC which is the ground pin
and the red Probe on pin number eight 5 volts are passed through this IC the required operating
voltages are passing through the IC this means that the eom is short circuited internally I
will install a new eom we should have already programmed the new eom with the same data as the
old eom this error will be fixed when the new eom with the same data is installed the next error
is EC 52 the compressor has started to work the error is still displaying despite the compressor
being turned on I have turned off the display from the remote because on the outdoor circuit board
the heat sync is not installed so my compulsion was to turn off the display this error code
is also for the outdoor unit the LED number 101 in the circuit board is blinking rapidly
which means that the error is present in the circuit board the sensor of the black connector
is not installed on the circuit board the black connector has a pipe coil sensor attached to it
which is installed on the condenser of the air conditioner if the sensor short circuits then
this error code EC 52 is displayed on the air conditioner this is how you can fix these error
codes join the membership to support the channel on patreon click on the left or right thumbnail
to watch the next videos and subscribe thank you