Toshiba RAV-DXC010 - Error Code Diagnostics - Part 2; Pressure, Address, and System Errors

20
LC DX Interface
Installation Manual
Indication
Main defective parts
Judging
device
Parts to be checked / error description
Air
conditioner
status
H06
Outdoor unit low-
pressure system
error
Outdoor
Current, high-pressure switch circuit, outdoor P.C. board ---
Ps pressure sensor
error was detected or low-pressure protective operation was activated.
Entire stop
L03
Duplicated header
indoor units 
Indoor
Indoor address setting error --- There are two or more header units in the
group.
Entire stop
L07
Group line in
individual indoor unit

Indoor
Indoor address setting error --- There is at least one group-connected indoor
unit among individual indoor units.
Entire stop
L08
Indoor group
address not set 
Indoor Indoor address setting error --- Indoor address group has not been set. Entire stop
L09
Indoor power level
not set
Indoor Indoor power level has not been set. Entire stop
L10
Outdoor unit P.C.
board
Outdoor In the case of outdoor P.C. board setting error jumper wire (for service) Entire stop
L20
LAN communication
error
Network
adapter
central
control
Address setting, central control remote controller, network adapter ---
Duplication of address in central control communication
Auto-reset
L29
Other outdoor unit
error
Outdoor
Other outdoor unit error
Entire stop
1) Communication error between IPDU MCU and CDB MCU
Entire stop
2) Abnormal temperature was detected by the heat sink temp. sensor in IGBT.
L30
Abnormal external
input into indoor unit
(interlock)
Indoor
External devices, outdoor unit P.C. board --- Abnormal stop due to incorrect
external input into CN80
Entire stop
L31
Phase sequence
error, etc.
Outdoor
Power supply phase sequence, outdoor unit P.C. board --- Abnormal phase
sequence of the 3-phase power supply
Operation
continued
(thermostat
OFF)
P01
Indoor unit fan error
Indoor
Indoor fan motor, indoor P.C. board --- Indoor AC fan error (fan motor thermal
relay activated) was detected.
Entire stop
P03
Outdoor unit
discharge temp.
error
Outdoor An error was detected in the discharge temp. releasing control. Entire stop
P04
Outdoor unit high-
pressure system
error
Outdoor
High-pressure switch --- The IOL was activated or an error was detected in the
high-pressure releasing control using the TE.
Entire stop
P05
Open phase
detected
Outdoor
The power cable may be connected incorrectly. Check open phase and
voltages of the power supply.
Entire stop
P07
Heat sink overheat
Outdoor
Abnormal temperature was detected by the temp. sensor of the IGBT heat sink.
Entire stop
P10
Indoor unit water
overflow detected
Indoor
Drain pipe, clogging of drainage, float switch circuit, indoor P.C. board ---
Drainage is out of order or the float switch was activated.
Entire stop
P15
Gas leakage
detected
Outdoor
There may be gas leakage from the pipe or connecting part. Check for gas
leakage.
Entire stop
P19 4-way valve error
Outdoor
(Indoor)
4-way valve, indoor temp. sensors (TC/TCJ) --- An error was detected due to
temperature drop of the indoor unit heat exchanger sensor when heating.
Auto-reset
(Auto-reset)
P20
High-pressure
protective operation
Outdoor High-pressure protection. Entire stop
P22
Outdoor unit fan
error
Outdoor
Outdoor unit fan motor, outdoor unit P.C. board --- An error (overcurrent,
locking, etc.) was detected in the outdoor unit fan drive circuit.
Entire stop
P26
Outdoor unit inverter
Idc activated
Outdoor
IGBT, outdoor unit P.C. board, inverter wiring, compressor --- Short-circuit
protection for compressor drive circuit devices (G-Tr/IGBT) was activated.
Entire stop
P29
Outdoor unit position
error
Outdoor
Outdoor unit P.C. board, high-pressure switch ---Compressor motor position
error was detected.
Entire stop
P31
Other indoor unit
error
Indoor
Another indoor unit in the group is raising an alarm. Entire stop
E03/L07/L03/L08 alarm check locations and error description. Auto-reset

The air conditioner automatically enters the auto-address setting mode.