ecoclima CM2-H16/4DR2, Руководство по обслуживанию

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1. Communication failure of indoor unit
1. Overview of faults
In case of communication failure, the indoor unit displays "F6" communication failure, and if the communication returns to normal, the
internal unit will be turned on.
2. Cause
of failure
Communication fault "F6" is generated.
3. It is possible that the fault point machine can not receive the data sent by the external machine, or the machine can not receive the
data sent by the external machine for 3 consecutive minutes during operation
SN. Content Maintenance measures
1
Are the internal and external machine
link lines connected correctly, and are
the internal and external machines
matched? Correct wiring or replacement of matching internal machine or external
machine
2
There is no voltage input from the
external machine after startup, or the
input is incorrect? Check the inner motherboard, link line
3
Disconnect the connecting line between
internal and external machines (internal
machine side), and test the
communication with "frequency
conversion tooling" to judge whether the
internal machine is normal. If the internal machine communication is OK, conduct the external machine
test
4
Disconnect the connecting line between
internal and external machine (external
machine side), test the communication
with "frequency conversion tooling", and
judge whether the external machine is
normal. If the external machine communication is OK, check and replace the internal
and external machine connecting wires
5
Check the connecting wires of internal
and external machines (damaged, aged,
misconnected, and the resistance
between wires decreases below m
ω
)
Replace the connecting lines of internal and external machines. Generally,
communication failures after a period of operation are caused by connecting
lines.
Take off the connecting wires of internal and external machines, and test whether the impedance of each wire is correct by multimeter,
generally the maximum is several
ω
;
Test whether the impedance between lines is correct, between l and s, between n and s, the impedance is above 50M
Ω
or infinite
under normal circumstances, and the impedance is several m
ω
or lower in case of failure.
4. Fault
handling flow
Communication
failure between
i
l d
Are internal and external
machine wiring correct?
Are internal and external
hi t h d?
Correct wiring or
change the
matching internal
d t l
Use multimeter to test
whether the power
supply of external
hi i l
Y
es
Confirm that the connecting
lines of internal and external
machines are normal;
Wh th th i t
l
Replace the connecting line;
Change the internal board
N
o
Check whether
the internal
machine runs
ll
Y
es
Replace the
motherboard of
N
o
Check whether
the external
machine is
running
Y
es
Replace internal and
external connecting
Check and replace external
l i l l
Y
es
N
o
Check whether
the indicator light
of the external
l li ht
Is the external
reactor or power
terminal plugged in
properly
Plug in all
terminals
Replace the
external electric
Y
es
N
o
N
o
Check whether the
internal machine is
N
o
Replace the
motherboard of
Check
whether the
external
machine is
Check and replace
external electrical control
Replace internal and
external connecting