Toshiba RAV-GP561ATW-E Service Manual page 69

Failure mode detected by indoor unit
Operation of diagnostic function
Check
Cause of operation
code
No communication from remote
controller (including wireless) and
E03
communication adapter
The serial signal is not output from
outdoor unit to indoor unit.
• Miswiring of inter-unit wire
• Serial communication circuit trouble
E04
of outdoor P.C. board
• Serial communication circuit trouble
of indoor P.C. board
E08 Duplicated indoor unit address
L03 Duplicated indoor header unit
There is group wire in individual
L07
indoor unit
L08 Unset indoor group address
Unset indoor capacity
L09
Abnormal input of outside interlock
L30
Float switch operation
• Float circuit, Disconnection,
P10
Coming-off, Float switch contact
trouble
Indoor DC fan trouble
P12
4-way valve system trouble
• After heating operation has started,
P19
indoor heat exchangers temp. is
down.
Unit automatically stops while
warning is output to other indoor
P31
units.
Coming-off, disconnection or short-
F01 circuit of indoor heat exchanger temp.
sensor (TCJ)
Coming-off, disconnection or short-
F02 circuit of indoor heat exchanger temp.
sensor (TC)
Coming-off, disconnection or short-
F10 circuit of indoor room air temp. sensor
(TA)
Indoor EEPROM trouble
F29
• EEPROM access trouble
Communication trouble between
indoor MCU
E10
• Communication trouble between
fan driving MCU and main MCU
Regular communication trouble
between indoor header and follower
E18
units and between master and sub
units
Status of air
Condition
conditioner
Stop Displayed
(Automatic when trouble is
reset) detected
Stop Displayed
(Automatic when trouble is
reset) detected
Displayed
Stop when trouble is
detected
Displayed
Stop when trouble is
detected
Displayed
Stop when trouble is
detected
Displayed
Stop when trouble is
detected
Displayed
Stop when trouble is
detected
Stop Displayed
(Automatic when trouble is
reset) detected
Stop
Displayed
(Follower unit)
when trouble is
(Automatic
detected
reset)
Stop Displayed
(Automatic when trouble is
reset) detected
Stop Displayed
(Automatic when trouble is
reset) detected
Stop Displayed
(Automatic when trouble is
reset) detected
Stop Displayed
(Automatic when trouble is
reset) detected
Stop Displayed
(Automatic when trouble is
reset) detected
Stop Displayed
(Automatic when trouble is
reset) detected
69
Judgment and measures
1.Check control wires of remote controller and
communication adapters.
• Remote controller LCD display OFF (Disconnection).
• Central remote controller [97] check code.
1.Outdoor unit does not completely operate.
• Inter-unit wire check, correction of miswiring.
• Check outdoor P.C. board. Correct wiring of P.C.
board.
2. When outdoor unit normally operates.
• Check P.C. board (Indoor receiving / Outdoor
sending).
1.Check whether remote controller connection (Group /
Individual) was changed or not after power supply turned
on (Finish of group construction / Address check).
* If group construction and address are not normal when
the power has been turned on, the mode automatically
shifts to address setup mode. (Resetting of address)
1.Set indoor capacity (DN = 11).
1.Check outside devices.
2.Check indoor P.C. board.
1.Trouble of drain pump.
2.Clogging of drain pump.
3.Check float switch.
4.Check indoor P.C. board.
1.Position detection trouble.
2.Over-current protective circuit of indoor fan driving unit
operated.
3.Indoor fan locked.
4.Check indoor P.C. board.
1.Check 4-way valve.
2.Check 2-way valve and check valve.
3.Check indoor heat exchanger (TC / TCJ).
4.Check indoor P.C. board.
1.Judge follower unit while header unit is [E03], [L03], [L07]
or [L08].
2.Check indoor P.C. board.
1.Check indoor heat exchanger temp. sensor (TCJ).
2.Check indoor P.C. board.
1.Check indoor heat exchanger temp. sensor (TC).
2.Check indoor P.C. board.
1.Check indoor room air temp. sensor (TA).
2.Check indoor P.C. board.
1.Check indoor EEPROM. (including socket insertion)
2.Check indoor P.C. board.
1.Check indoor P.C. board.
1.Check remote controller wiring.
2.Check indoor power supply wiring.
3.Check indoor P.C. board.