93
Troubleshooting
–
–
Outdoor pressure sensor
(Pd, Ps) wiring error
Wiring error in outdoor pressure sensors (Pd, Ps)
has been detected.
–
Low pressure sensor (Ps)
error
Output voltage of low pressure sensor (Ps) is zero.
–
High pressure sensor (Pd)
error
Outdoor EEPROM error
Output voltage of high pressure sensor (Pd) is zero
or provides abnormal readings when compressors
have been turned off.
–
Outd
oor EEPROM is faulty (alarm and shutdown
for header unit and continued operation for followe
r
unit)
H05
F12
F15
F16
F23
F24
F31
– H05
F31
F24
F23
F16
F15
F12
Outdoor discharge
temperature sensor (TD1)
wiring error
Wiring/installation error or detachment of outdoor
discharge temperature sensor (TD1) has been
detected.
H06 – H06
H07
Activation of low-pressure
protection
Low oil level protection
Low pressure (Ps) sensor detects abnormally low
operating pressure.
–
Temperature sensor for oil level detection
(TK1,TK2,TK4,TK5) detects abnormally low oil
level.
H08
H07
01: TK1 sensor error
02: TK2 sen
sor error
04: TK4 sensor error
05: TK5 sensor error
H08
Error in temperature
sensor for oil level
detection
(TK1
T )
Temperature sensor for oil level detection
(TK1
) has been open/short-
circuited.
H15 – H15
Outdoor discharge
temperature sensor (TD2)
wiring error
Wiring/installation error or detachment of outdoor
discharge temperature sensor (TD2) has been
detected.
H16
01: TK1 oil circuit error
02: TK2 oil circuit error
04: TK4 oil circuit error
05: TK5 oil circuit error
H16
Oil level detection circuit
error
No temperature change is detected by
temperature sensor for oil level detection
(TK1
) despite compressor having
been started.
–
Dup
licated outdoor
refrigerant line address
Identical refrigerant line address has been
assigned to outdoor units belonging to different
refrigerant piping systems.
L06
L04 L04
L05
L06
(L08)
L10L10
L08
L17L17
L28L28
Number of priority indoor units
(check code L05 or L06 depending
on individual unit)
Duplicated priority indoor
unit (as displayed on
priority indoor unit)
More than one indoor unit have been set up as
priority indoor unit.
Duplicated priority indoor
unit
(as displayed on
indoor unit other than
priority indoor unit)
More than one indoor unit
been set up
as priority indoor unit.
–
Indoor group address not
set
Outdoor capacity net set
Address setting
not been performed for one
or more indoor units (also detected at indoor end).
–
Outdoor unit capacity has not been set (after P.C.
board replacement).
–
Outd
oor model
incompatibility error
Old model outdoor unit (prior to 6 series) has been
connected.
–
Too many outdoor units
connected
More than
outdoor units have been
connected.
Check code
Display of receiving unit
Typical problem site Description of problem
Outdoor 7-segment display
TCC-LINK
central control
or main remote
controller
display
Indicator light block
Sub-code
Flash
Operation
Timer Read
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