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12
Check Codes
Check
code
E06
Indoor unit initially communicating normally fails to
return signal (reduction in number of indoor units
connected).
Description of error
Check
code
Description of error
E07
Signal cannot be transmitted to indoor units
(
→
indoor units left without communication from
outdoor unit).
E12
• Indoor automatic address setting is started while
automatic address setting for equipment in other
refrigerant line is in progress.
• Outdoor automatic address setting is started while
automatic address setting for indoor units is in
progress.
E31
There is no communication between IPDUs (P.C.
boards) in inverter box.
Outdoor I/F board error
When power supply was turned on within 30 seconds
(before electric discharge of capacitor) after power
supply was reset
E26
Follower outdoor unit initially communicating normally
fails to do so (reduction in number of follower outdoor
units connected).
F24
Output voltage of high pressure sensor (Pd) is zero or
provides abnormal readings when compressors have
been turned off.
H16
No temperature change is detected by temperature
sensor for oil level detection (TK1-5) despite
compressor having been started.
L04
Identical refrigerant line address has been assigned
to outdoor units belonging to different refrigerant
piping systems.
P05
Open phase is detected when power is turned on.
Inverter DC voltage is too high (overvoltage) or too
low (undervoltage).
P15
Outdoor suction temperature sensor (TS1) detects
sustained and repeated high temperatures that
exceed standard value.
E08
More than one indoor unit is assigned same
address (also detected at indoor unit end).
H06
Low pressure (Ps) sensor detects abnormally low
operating pressure.
E19
There is no or more than one outdoor header unit in
one refrigerant line.
E20
Indoor unit from other refrigerant line is detected while
indoor automatic address setting is in progress.
E28
Outdoor header unit detects fault relating to follower
outdoor unit (detail displayed on follower outdoor unit).
F04
Outdoor discharge temperature sensor (TD1) has
been open/short-circuited.
F05
Outdoor discharge temperature sensor (TD2) has
been open/short-circuited.
F06
Outdoor heat exchanger temperature sensors
(TE1, TE2) have been open/short-circuited.
F07
Outdoor liquid temperature sensor (TL) has been
open/short-circuited.
F08
Outdoor outside air temperature sensor (TO) has
been open/short-circuited.
F12
Outdoor suction temperature sensor (TS1, TS2) has
been open/short-circuited.
F15
Wiring error in outdoor temperature sensors (TE1, TL)
has been detected.
F31
Outdoor EEPROM is faulty (alarm and shutdown for
header unit and continued operation for follower unit)
H05
Wiring/installation error or detachment of outdoor
discharge temperature sensor (TD1) has been detected.
F16
Wiring error in outdoor pressure sensors (Pd, Ps)
has been detected.
F22
Outdoor discharge temperature sensor (TD3) has
been open/short-circuited.
Signal cannot be transmitted to other outdoor units.
E23
More than 3 outdoor units have been connected.
L28
There is part failure in P.C. board (I/F).
L31
There is duplication in outdoor addresses set manually.
E25
Output voltage of low pressure sensor (Ps) is zero.
F23
E16
Combined capacity of indoor units is too large
(more than 135% of combined capacity of outdoor units).
E15
Indoor unit fails to communicate while automatic
address setting for indoor units is in progress.
H07
Temperature sensor for oil level detection (TK1-5)
detects abnormally low oil level.
H08
Temperature sensor for oil level detection (TK1-5)
has been open/short-circuited.
H15
Wiring/installation error or detachment of outdoor
discharge temperature sensor (TD2) has been detected.
H25
Wiring/installation error or detachment of outdoor
discharge temperature sensor (TD3) has been detected.
L05
More than one indoor unit has been set up as priority
indoor unit.
L06
More than one indoor unit has been set up as
priority indoor unit.
L08
Address setting has not been performed for one or
more indoor units (also detected at indoor end).
L10
Outdoor unit capacity has not been set (after P.C.
board replacement).
L17
Old model outdoor unit (prior to 3 series) has been
connected.
L18
Cooling/heating cycle error resulting from piping error
is detected.
L29
There are insufficient number of IPDUs
(P.C. boards) in inverter box.
L30
Indoor unit has been shut down for external error
input in one refrigerant line (detected by indoor unit).
P03
Outdoor discharge temperature sensor (TD1) has
detected abnormally high temperature.
P07
Temperature sensor built into IGBT (TH) detects
overheating.
P10
Indoor unit has been shutdown in one refrigerant line
due to detection of overflow (detected by indoor unit).
P13
State of refrigerant cycle circuit indicates liquid
backflow operation.
P17
Outdoor discharge temperature sensor (TD2) detects
abnormally high temperature.
P18
Outdoor discharge temperature sensor (TD3) detects
abnormally high temperature.
P19
Abnormality in refrigerating cycle is detected
during heating operation.
P20
High pressure (Pd) sensor detects high pressure
that exceeds standard value.
Содержание R410A
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