emmeti Mirai SMI EH0614DC, Installation And Use Manual

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42
DESCTIPTION OF COMPONENTS
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The error codes displayed on the unit display board indicate the location of the breakdown or abnormality.
Unit
Appearance Section or stakeholder Method of check Resolution of the problem
Error
code
-- --
Power supply check the power supply confirm the power supply.
Fuse cf3 (250v t5a) check the electric continuity by tester [see fig. 1]
if CF3 is blown, it should be replaced and
check if there is a short-circuit at a connector
of the 4-way valve coil, the heater for tank, or
the circulation pump. [see fig 4,5,6]
if a short-circuit is found, the parts should be
replaced.
FUSE CF1 (250V
T25A)
check the electric continuity by tester [see fig. 1]
if CF1 is blown, PCB(MAIN) should be replaced
and check the resistances
between pink-gray and orange-blue in the
connector of POWER MODULE. [see fig 7]
if these values are below 100k
Ω
, POWER
MODULE should be replaced.
A0 DC voltage Error
Fan motor
take off the connector 9 , and check the resi-
stance between red-black
in the connector if the resistance is over 100k
Ω
,
FAN MOTER is normal
if FAN MOTOR is abnormal, it should be repla-
ced. and check the electric continuty
fuse CF4 by tester . [see fig 2]
if CF4 is blown, it should be replaced.
Fuse CF4 (250V
T3.15A)
Power module
take off the terminals (orange and blue) and
check the resistance between
orange-blue if the resistance is over 100k
Ω
,
POWER MODULE is normal
if these values are below 100k
Ω
, POWER
MODULE should be replaced.
Power supply check the power supply confirm the power supply.
A1
Discharge
temperature Error
SENSOR, TEMP.
DISCHARGE
check the resistance by tester [see table 2] SENSOR, TEMP. DEFROST should be replaced.
SENSOR, TEMP.
SUCTION
check the resistance by tester [see table 1] SENSOR, TEMP. SUCTION should be replaced.
GAS LEAKAGE
check the service valve and refrigerant circuit
(pipe)
collect refrigerant once, then recharge with
prescribed mass.
A2
Protective action
against excess
current DC current
detection
UNREASONABLE
OPERATION
UNDER OVERLOAD
check the place of installation (blockage of air
inlet & outlet ) check the excess gas
ensure the installation position to avoid
blockage of air inlet & outlet
if excess gas is observed, collect all refrigerant
once, then recharge with prescribed mass.
DROP OF POWER
VOLTAGE
check the power voltage (230V) confirm the power supply voltage. (230V)
POWER MODULE
operate without the junction connector of
compressor lead wire
if the same error code appears again, POWER
MODULE should be replaced.
FUSE CF2 (250V
T15A)
check the electric continuity FUSE CF2
(250V T15A) by tester
if CF2 is blown, PCB(MAIN) should be repla-
ced.
COMPRESSOR other than described above COMPRESSOR should be replaced.
A3 CT disconnection PCB (MAIN) ------- PCB (MAIN) should be replaced.
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9. ASSISTANCE AND MAINTENANCE
9.5 Alarm errors on the PCB Main Display
PUMP SW