7-18
7
2WAY SYSTEM
Test Run
7. Self-Diagnosis Function Table and Contents of Alarm Display
Remote control display Alarm contents
E20 No indoor unit during auto address setting
E21 Receiving failure of main system from sub system when link wiring is used for outdoor units
E22 Receiving failure of sub system from main system when link wiring is used for outdoor units
E24 Receiving failure of relay control unit from outdoor unit(s)
E25 Failure of outdoor unit address setting (Duplicative)
E26 Inconsistencies in number of outdoor units
E29 Failure of outdoor unit to receive relay control unit
E30 Failure of transferring outdoor unit serial
E31 Wiring error between the P.C. board ( [L-Pow], [HIC] wire)
F04 Compressor 1 discharge temperature sensor abnormal
[DISCH1]
F05 Compressor 2 discharge temperature sensor abnormal
[DISCH2]
F06 Outdoor unit heat exchanger 1 gas (inlet) temperature sensor abnormal
[EXG1]
F07 Outdoor unit heat exchanger 1 liquid (outlet) temperature sensor abnormal
[EXL1]
F08 Outdoor temperature sensor abnormal
[TO]
F12 Compressor inlet temperature sensor abnormal
[SCT]
F14 Supercooling gas temperature sensor abnormal
[SCG]
F16 High pressure sensor abnormal, high-load
[HPS]
F17 Low pressure sensor abnormal
[LPS]
F23 Outdoor unit heat exchanger 2 gas (inlet) temperature sensor abnormal
[EXG2]
F24 Outdoor unit heat exchanger 2 liquid (outlet) temperature sensor abnormal [EXL2]
F31 Outdoor unit nonvolatile memory (EEPROM) error
H01 Compressor 1 abnormal current values (Overcurrent)
H03 Compressor 1 CT sensor disconnected, short-circuit
H05 Compressor 1 discharge temperature sensor disconnected
H06 Low pressure abnormal lowering
H07 Oil loss - error
H08 Oil sensor (connection) error 1
H11 Compressor 2 abnormal current values (Overcurrent)
H13 Compressor 2 CT sensor disconnected, short-circuit
H15 Compressor 2 discharge temperature sensor disconnected
H21 Compressor 2 HIC alarm
H27 Oil sensor (connection) error 2
H31 Compressor 1 HIC alarm
L04 Outdoor unit address settings duplicated
L05 Indoor unit priority duplicated (For priority indoor)
L06 Indoor unit priority duplicated (Not for priority indoor) and outdoor unit
L10 Outdoor unit capacity settings not made
L17 Inconsistencies in outdoor unit models
L18 4-way valve coil disconnected, line disconnected
P03 Compressor 1 discharge temperature error
P04 Actuation of high pressure switch
P05 Compressor 1 open phase detection
P11 Cooling water freeze (chiller)
P14 Actuation of O
2
sensor
P15 Compressor 2 open phase detection
P16 Compressor 1 secondary overcurrent
P17 Compressor 2 discharge temperature error
P19 Compressor 2 start failure (compressor lock, compressor wiring open phase, DCCT failure)
P20 High load (Forgot to open valves)
P22 Outdoor unit fan1 failure (IPM damage, overcurrent, invertor failure, DC fan lock, hole IC open phase)
P23 Inter lock not cancellation (chiller)
P24 Outdoor unit fan2 failure (IPM damage, overcurrent, invertor failure, DC fan lock, hole IC open phase)
P26 Compressor 2 secondary overcurrent
P29 Compressor 1 start failure (compressor lock, compressor wiring open phase, DCCT failure)
• Contents of alarm display on remote controller
For the remote controller, there are other alarm contents listed on the following table besides the alarm display on outdoor main unit
control P.C. board.
Wired remote
control display
Detected contents
<E01>
Remote controller detects abnormal signal transmitted
from the indoor unit.
• Failure of remote controller to receive.
(For group control, signal from the main unit.)
• No setting of system address, indoor unit address,
indoor unit individualization / main / sub
(Auto address setting not completed.)
<E02>
Remote controller not connected properly.
<<E03>> Indoor unit failed to receive serial signal by remote controller (or central controller).
E04
Indoor unit detects abnormal signal from outdoor main unit
control P.C. board.
• Receiving failure of remote controller
(For group control, signal from the main unit.)
• Inconsistencies in number of connected units and setting
units when outdoor unit is turned ON power.
(Excepting the system address “0”)
E08
Setting failure
Indoor unit address settings duplicated
<<E09>>
Main remote control settings duplicated
E18 Indoor unit communication error in group control wiring
Main indoor unit failed to receive serial signal from sub
indoor unit.
<<L02>>
Setting failure
Indoor unit connected to multiple outdoor units is not for
multiple type.
<L03>
Main unit settings duplicated in group control indoor units
L07
Group control wiring connected to individual control indoor
unit
L08
Indoor unit address settings not made
<<L09>>
Indoor unit capacity settings not made
<<F01>>
Indoor unit thermistor failure
Heat exchanger temperature sensor E1
<<F02>>
Water heat exchanger temperature sensor E2 (chiller)
<<F03>>
Heat exchanger temperature sensor E3
<<F10>>
Inlet temperature sensor
<<F11>>
Outlet temperature sensor
<<P09>> Connection failure of ceiling panel or connector
<<P01>>
Indoor unit protection
Fan protection thermostat
<<P10>>
Float switch
<<P12>>
Actuation of fan invertor protecting function
F29 Nonvolatile memory IC (EEPROM) failure on indoor unit control P.C. board
• The parentheses of << >> used in the table of alarm display does not affect anything the operation of other indoor units.
• The parentheses of < > used in the table of alarm display implies that there are two cases : according to the content of the symptom,
some affect the operation of other indoor units and others do not affect anything.
Alarm messages displayed on system controller
Serial
communication
errors
Mis-setting
Error in transmitting serial
communication signal
Indoor or main outdoor unit is not operating correctly.
Mis-wiring of control wiring between indoor unit, main outdoor unit and
system controller.
C05
Error in receiving serial
communication signal
Indoor or main outdoor unit is not operating correctly.
Mis-wiring of control wiring between indoor unit, main outdoor unit and
system controller.
CN1 is not connected properly.
C06
Activation of
protective
device
Protective device of sub
indoor unit in group control is
activated.
When using wireless remote controller or system controller, in order to
check the alarm message in detail, connect wired remote controller to
indoor unit temporarily.
P30
NOTE
1. Alarm messages in << >> do not affect other indoor unit operations.
2. Alarm messages in < > sometimes affect other indoor unit operations depending on the fault.
SM830253-00_欧州2way7_SM-TRSM.indb 18 16/08/03 14:14:27
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