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Troubleshooting
ERROR
CODE
J2
Communication error between outdoor
unit and indoor unit.
J3
Communication error between the
controller PCB and the main PCB of the
outdoor unit.
J7
Failure in the EPROM of the outdoor unit. •
E1
Four-way valve failure
E3
High discharge temperature protection
E8
Failure of indoor unit high temperature
protection in cooling model
FH
Low outlet temperature protection
31
INVERTER module protection failure
32
Compressor drive hardware protection
33
Module software protection
34
Outdoor compressor failure
35
Electrical overcurrent protection fault
36
Failure in overvoltage or undervoltage
protection.
37
Failure in the modular temperature
sensor in the outdoor unit
38
Compressor power supply failure
39
1PM compressor module sensor da-
mage
3H
Outdoor unit fan motor failure
3C
Power failure in the outdoor unit motor
3J
Over voltage on outdoor unit motor.
3E
Compressor drive PFC software pro-
tection
DESCRIPTION
POSSIBLE CAUSE
•
Damage to the base plate of the indoor unit
•
Damage to the base plate of the outdoor unit
•
Poor wiring
•
Damage to the outdoor unit controller PCB.
•
Damage to the main PCB of the outdoor unit.
•
Faulty wiring
Damage on chip
•
Damage to the four-way valve
•
Damage to the four-way valve spool
•
Lack of coolant
•
Shut-off valve not opened
•
Damage to the main PCB of the outdoor unit
•
Falta de refrigerante
•
Válvula de cierre no abierta
•
Daños en el circuito impreso principal de la unidad exterior
•
Detachment of the temperature sensor
•
Damage to the main PCB of the outdoor unit
•
INVERTER module protection failure
•
Damage to the EE chip on the controller board
•
Supply voltage below level allows current to be excessive
•
Supply voltage exceeds limit
•
Outdoor fan stops at low speed
•
Compressor may not be on
•
Excessive unit operating current.
•
Voltage drops abruptly in operation
•
Excessive input voltage
•
Lower input voltage
•
Daños en el sensor del módulo 1PM del compresor
•
Compressor has no power supply
•
Bad contact between the 1PM module of the compressor and
the radiator
•
Engine damage
•
Engine reaches high speed
•
Low output voltage
•
Excessive unit operating current.
•
Voltage drops abruptly in operation
136
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