EN
Error
Description
Code
Protective
measure
against the
A2
detection of
excess DC
current
CT disconnec-
A3
tion
Protective
measure
against the
A4
detection of
excess AC
current
Abnormal
A5
rotation of the
compressor
Intake temper-
A6
ature sensor
error
Defrosting
A7
temperature
sensor error
Section II :: Installation and maintenance
Relevant part Verification method
Check the installation room
Unreasonable
(air intake and output clog-
overload
ging). Check if excessive gas
has been loaded.
Drop in the
Check the power supply volt-
power supply
age (320V).
voltage
Operate with the COMPRES-
PCB MAIN
SOR connector discon-
nected.
Temporary power
-------
interruption (in the
event of lightning)
COMPRES-
Fault is different from the
SOR
above cases.
PCB MAIN
-------
Check the installation room
Unreasonable
(air intake and output clog-
overload
ging). Check if excessive gas
has been loaded.
Drop in the
Check the power supply volt-
power supply
age (320V).
voltage
Temporary power
-------
interruption (in the
event of lightning)
Check the installation room
Unreasonable
(air intake and output clog-
overload
ging). Check if excessive gas
has been loaded.
Drop in the
Check the power supply volt-
power supply
age (320V).
voltage
6-10kW Unit: Check the elec-
trical continuity of FUSE CF6
Fuse CF6,
with a tester [fig. 1].
CF2
13-16kW Unit: Check the
electrical continuity of FUSE
CF2 with a tester [fig. 1].
Temporary power
interruption (in the
-------
event of lightning)
Check the difference be-
Obstruction in
tween the water input and
the PUMP or
output. A great difference
in the hydraulic
means that the flow rate is
circuit
too low.
COMPRES-
Fault is different from the
SOR or PCB
above cases.
MAIN
Check the electrical continu-
INTAKE TEMP.
SENSOR
ity with a tester [tables].
DEFROSTING
Check the electrical continu-
TEMP. SEN-
ity with a tester [tables].
SOR
Solution
Correct the installation position to prevent the air
intake and output from clogging.
If excessive gas has been loaded, recover the
refrigerant and then reload the required mass.
Make sure that the power supply voltage is cor-
rect (230V).
If the same error code appears again, replace the
PCB MAIN.
Disconnect and reconnect the power supply.
The COMPRESSOR must be replaced.
Replace the PCB MAIN board.
Correct the installation position to prevent the air
intake and output from clogging.
If excessive gas has been loaded, recover the
refrigerant and then reload the required mass.
Make sure that the power supply voltage is cor-
rect (230V).
Disconnect and reconnect the power supply.
Correct the installation position to prevent the air
intake and output from clogging.
If excessive gas has been loaded, recover the
refrigerant and then reload the required mass.
Make sure that the power supply voltage is cor-
rect (230V).
If fuse CF6 is blown, replace the PCB MAIN.
If fuse CF2 is blown, replace the PCB MAIN.
Disconnect and reconnect the power supply.
Remove the obstruction and resume operation.
The COMPRESSOR must be replaced.
Replace the sensor if it is faulty.
Replace the sensor if it is faulty.
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