The error codes on the unit display indicate the origin of the fault or the malfunction.
Error
Code
Description Relevant part 9HUL¿FDWLRQPHWKRG Solution
-- --
Electric power
supply
Check the supply. Make sure that the power supply is correct.
Fuse CF2
Check the electrical continu-
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If fuse CF2 is blown, replace it and verify whether
there is a short circuit in the connectors of the coil
of the 4-WAY VALVE or the DEFROSTING RESIS-
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component in question.
Fuse CF1,
CF3, CF4
Check the electrical continu-
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If fuse CF1, CF2 or CF4 is blown, replace the PCB
MAIN.
PCB MAIN
Fault is different from the
above cases.
Replace the PCB MAIN.
A0
DC voltage
error
Electric power
supply
Check the supply. Make sure that the power supply is correct.
FAN MOTOR
Operate with the FAN MO-
TOR disconnected.
If the same error code appears, the PCB MAIN or the
PUMP must be replaced. If a different error code ap-
pears, replace the FAN MOTOR.
13-16kW Unit: remove con-
nectors 11 and 14 and check
the resistance between the
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WKDQNȍWKH)$102-
TOR works regularly.
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MOTOR.
13-16kW Unit: Fuse CF6,
CF7. Check the electrical
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@
If fuse CF6 or CF7 is blown, replace the FAN MOTOR
and the fuse.
PUMP
Operate with the PUMP
disconnected.
If the same error code appears, the PCB MAIN or the
FAN MOTOR must be replaced. If a different error
code appears, replace the PUMP.
REACTOR
Check that the cable con-
nections to the terminals are
correct.
If the cables are not connected, connect them prop-
erly.
Check the electrical continu-
ity between the terminals of
the REACTOR with a tester
If there is no electrical continuity on the REACTOR,
replace it.
A1
Drain temper-
ature error
DRAIN TEMP.
SENSOR
Check the electrical continu-
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DRAIN TEMP. SENSOR must be replaced.
INTAKE
TEMP. SEN-
SOR
Check the electrical continu-
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INTAKE TEMP. SENSOR must be replaced.
Gas leak
Check the service valve and
the cooling circuit.
Recover the refrigerant and then reload the required
mass.
102
Section II :: Installation and maintenanceEN