Toshiba RAV-SM2242DT-E Installation Manual page 41

Concealed Duct High Static Pressure
Wired remote
controller
Main defective parts
display
Indication
L20 LAN communication error
L29 Other outdoor unit error
Abnormal external input into
L30
indoor unit (interlock)
L31 Phase sequence error, etc.
P01 Indoor unit fan error
Outdoor unit discharge temp.
P03
error
Outdoor unit high-pressure
P04
system error
P05 Open phase detected
P07 Heat sink overheat
Indoor unit water overflow
P10
detected
P15 Gas leakage detected
P19 4-way valve error
High-pressure protective
P20
operation
P22 Outdoor unit fan error
Outdoor unit inverter Idc
P26
activated
P29 Outdoor unit position error
P31 Other indoor unit error
: The air conditioner automatically enters the auto-address setting mode.
Judging device Parts to be checked / error description
Network
Address setting, central control remote controller, network adapter ---
adapter central
Duplication of address in central control communication
control
Other outdoor unit error
1) Communication error between IPDU MCU and CDB MCU
Outdoor
2) Abnormal temperature was detected by the heat sink temp. sensor
in IGBT.
External devices, outdoor unit P.C. board --- Abnormal stop due to
Indoor
incorrect external input into CN80
Power supply phase sequence, outdoor unit P.C. board --- Abnormal
Outdoor
phase sequence of the 3-phase power supply
Indoor fan motor, indoor P.C. board --- Indoor AC fan error (fan motor
Indoor
thermal relay activated) was detected.
Outdoor An error was detected in the discharge temp. releasing control.
High-pressure switch --- The IOL was activated or an error was
Outdoor
detected in the high-pressure releasing control using the TE.
The power supply wire may be connected incorrectly. Check open
Outdoor
phase and voltages of the power supply.
Abnormal temperature was detected by the temp. sensor of the IGBT
Outdoor
heat sink.
Drain pipe, clogging of drainage, float switch circuit, indoor P.C. board
Indoor
--- Drainage is out of order or the float switch was activated.
There may be gas leakage from the pipe or connecting part. Check for
Outdoor
gas leakage.
4-way valve, indoor temp. sensors (TC/TCJ) --- An error was detected
Outdoor
due to temperature drop of the indoor unit heat exchanger sensor
(Indoor)
when heating.
Outdoor High-pressure protection
Outdoor unit fan motor, outdoor unit P.C. board --- An error
Outdoor (overcurrent, locking, etc.) was detected in the outdoor unit fan drive
circuit.
IGBT, outdoor unit P.C. board, inverter wiring, compressor --- Short-
Outdoor circuit protection for compressor drive circuit devices (G-Tr/IGBT) was
activated.
Outdoor unit P.C. board, high-pressure switch --- Compressor motor
Outdoor
position error was detected.
Another indoor unit in the group is raising an alarm.
Indoor
E03/L07/L03/L08 alarm check locations and error description
– 40 –
Installation Manual
Air conditioner
status
Auto-reset
Entire stop
Entire stop
Entire stop
Operation
continued
(thermostat
OFF)
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
EN
Entire stop
Auto-reset
(Auto-reset)
Entire stop
Entire stop
Entire stop
Entire stop
Entire stop
Auto-reset
40-EN