Daikin VRVII User Manual

Troubleshooting by Indication on the Remote Controller
366
Protection device and others
L1 Defective
inverter PCB
• No output is given. • Defective heavy
current part of
compressor
L9 Defective
startup of
inverter
compressor
• The compressor
motor fails to start up.
• Liquid sealing or
defective
compressor
• Excessive oil or
refrigerant
• Defective inverter
PCB
E5 Inverter
compressor
lock
• The compressor is in
the locked status
(does not rotate).
• Defective
compressor
L4 Radiation fin
temperature
rise
• The radiation fin
temperature reaches
87°C or more (while in
operation).
• Defective fan
• Running in
overload for an
extended period
of time
• Defective inverter
PCB
U2 Power supply
voltage error
• The inverter power
supply voltage is high
or low.
• Power supply
error
• Defective inverter
PCB
P1 Imbalanced
power supply
• Power supply voltages
get significantly
imbalanced among
three phases.
• Power supply
error (imbalanced
voltages of 2% or
more)
• Defective inverter
PCB
• Dead inverter
PCB
LC Transmission
error (between
inverter PCB
and service
monitor PCB)
• With the outdoor unit
PCB, no
communications are
carried out across
service monitor PCB -
inverter PCB - fan
PCB.
• Broken wire in
communication
line
• Defective service
monitor PCB
• Defective inverter
PCB
• Defective fan
PCB
PJ PCB
mismatching
• Any PCB of
specification different
from that of the
product is connected.
• PCB of different
specification
mounted
P4 Defective
radiation fin
thermistor
• The radiation fin
thermistor gets short
circuited or open.
• Defective
radiation fin
thermistor
Code Name
Condition for
determining error
Major cause

Daikin VRVII Specifications

General

Brand	Daikin
Model	VRVII
Category	Air Conditioner
Language	English