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RA, SkyAir, VRV, PA, and Heat Reclaim Ventilator
0
1
Detail
code
Division
A
External protection
Malfunction of
device activated
indoor unit PCB
C
Malfunction of
Failure of
sensor system
transmission
(unifi ed)
(between indoor
unit PCB and sub
PCB)
E
Protection devices
Defective outdoor
Missing of earth
activated (unifi ed)
unit PCB
leakage detection
core
F
H
Malfunction of
Malfunction of room
Malfunction of
sensor system of
temperature sensor
power supply
compressor
or humidifi er unit
sensor
damper
J
Miswiring of
Malfunction of
Malfunction of
thermistor
pressure sensor
current sensor of
compressor
L
Malfunction of
Malfunction of
inverter system
inverter PCB
P
Shortage of
Power voltage
Automatic
refrigerant amount
imbalance or
refrigerant charge
(thermal storage
inverter PCB
operation stop
unit)
U
Shortage of
Reverse phase,
Malfunction of
refrigerant
open phase
power supply or
instantaneous
power failure
M
Malfunction of
central remote
controller PCB
6
External protection
Malfunction of PCB
Ozone density
device activated
abnormal
(Heat reclaim
ventilator)
8
9
Simple Self-Diagnosis by Malfunction Code
2
3
4
5
Drain Level
Malfunction of
High pressure
Control System
freezing protection
control in heating,
Abnormality
freeze-up protection
control in cooling
Malfunction of drain
Malfunction of liquid
Malfunction of gas
level sensor
pipe thermistor for
pipe thermistor for
heat exchanger
heat exchanger
Actuation of high
Actuation of low
Inverter compressor
pressure switch
pressure switch
motor or overheat
(HPS)
(LPS)
Malfunction of
Wet alarm
discharge pipe
temperature
Malfunction of high
Malfunction of low
Malfunction of
pressure switch
pressure switch
compressor motor
(HPS)
(LPS)
overload thermistor
Malfunction of
Malfunction of low
Malfunction of
discharge pipe
pressure equivalent
suction pipe
thermistor
saturated
thermistor
temperature sensor
system
El.compo. box
Malfunction of
Inverter
temperature rise
inverter radiation fi n
instantaneous
temperature rise
overcurrent (DC
output)
Malfunction of
Malfunction of
Malfunction of DC
thermistor in switch
radiation fi n
current sensor
box
temperature sensor
Check operation
Malfunction of
Malfunction of
not executed or
transmission
transmission
transmission error
between indoor and
between indoor
outdoor unit
unit and remote
controller
Contaminated
Malfunction
Malfunction
sensor error
of indoor air
of outdoor air
thermistor (Heat
thermistor (Heat
reclaim ventilator)
reclaim ventilator)
Malfunction of
transmission
(between heat
reclaim ventilator
and fan unit)
6
7
8
Malfunction of fan
Malfunction of
Malfunction of
Malfunction
motor
swing fl ap motor
power supply or AC
of electronic
input overcurrent
expansion valve
Malfunction of fan
Front panel driving
Malfunction of AC
Malfunction
motor sensor or fan
motor fault
input current sensor
of suction air
control driver
system
thermistor
STD compressor
Malfunction of
Overcurrent of
Malfunction
motor overcurrent/
outdoor unit fan
inverter compressor
of electronic
lock
motor system
expansion valve coil
Abnormal
high pressure
or refrigerant
overcharged
Malfunction of
Malfunction of
Malfunction of
Malfunction
position detection
outdoor unit fan
compressor input
of outdoor air
sensor
motor signal
(CT) system
thermistor
Malfunction of
Malfunction
Malfunction
Malfunction
heat exchanger
of thermistor
of thermistor
of thermistor
thermistor
(Refrigerant circuit)
(Refrigerant circuit)
(Refrigerant circuit)
Inverter
Total input
Malfunction of
Malfunction of
instantaneous
overcurrent
overcurrent inverter
inverter compressor
overcurrent (AC
compressor
startup error (Stall
output)
prevention)
Malfunction of
Malfunction of
Heat exchanger
Automatic
AC or DC output
total input current
freezing protection
refrigerant
current sensor
sensor
during automatic
charge operation
refrigerant charging
completed
Malfunction of
Malfunction of
Malfunction of
Malfunction of
transmission
transmission
transmission
transmission (other
between indoor
between outdoor
between remote
system)
units
units or outdoor
controllers
storage unit
Malfunction of
transmission
between optional
controllers for
centralized control
Supply air passage
Exhaust air
Malfunction of dust
closed
passage closed
collection unit (Heat
reclaim ventilator)
Micro-computer
initialization
9
A
C
E
Heater overheat
Stop due to low
Low water level · no
water level
water supply
Malfunction of
Malfunction of
Malfunction
discharge air
humidity sensor
of switch box
thermistor
system
thermistor
Malfunction of four
Malfunction of
Malfunction of drain
way valve or cool/
entering water
water level
heat switchin
temperature
Abnormal high
Abnormal oil
pressure actuation
pressure
of HPS
Malfunction of
Malfunction of (hot)
Malfunction of drain
discharge air
water temperature
water level sensor
thermistor
thermistor
Malfunction of high
Malfunction of low
Malfunction of oil
pressure sensor
pressure sensor
pressure sensor or
sub-tank thermistor
Malfunction of
Malfunction of
Malfunction of
power transistor
transmission
igniter system
between control
and inverter PCB
Refrigerant cylinder
Refrigerant cylinder
Automatic
during automatic
during automatic
refrigerant charge
refrigerant charging
refrigerant charging
operation nearly
completed
Improper
Malfunction
Malfunction of
combination of
of setting of
transmission
indoor and outdoor
centralized control
between indoor
units
equipment address
unit and centralized
control equipment
Improper
Address
combination of
duplication,
optional controllers
improper setting
for centralized
control
Malfunction of
Replace the
Replace the
damper system
humidify element
deodorising catalyst
(Heat reclaim
ventilator)
After Sales Service Division
(SM-TS3)
F
H
J
Malfunction of a
Malfunction of
Malfunction of
humidifi er system
dust collector of air
capacity setting
cleaner
(Indoor unit PCB)
Malfunction of high
Room temperature
pressure switch
thermistor in
remote controller
abnormality
Malfunction of
Malfunction of
Actuation of option
thermal storage unit
cooling water pump
protection device
Abnormal oil level
Abnormal high
Abnormal exhaust
or shortage of oil
temperature of
temperature of
refrigerant oil
engine
Alarm in thermal
High room
Malfunction of
storage unit or
temperature alarm
thermal storage
storage controller
tank water level
Malfunction of
Malfunction of
Malfunction of
oil level sensor
oil temperature
engine room
or heating heat
thermistor
temperature
exchanger
sensor or exhaust
thermistor
temperature
Engine startup error Malfunction of
Engine stop
generator converter
Malfunction of
Refrigerant cylinder
Improper
starter actuation
during automatic
combination
refrigerant charging
between inverter
and fan driver
System is not
Malfunction of
Malfunction of
set yet
system
transmission
(accessory device)
Simplifi ed
Door switch open
Replace the high
remote controller
(Heat reclaim
effi cient fi lter
malfunction (Heat
ventilator)
reclaim ventilator)
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