Toshiba RAS-B10J2FVG-E - Page 88

Block distinction Operation of diagnosis function
Check
code
Block
Check
code
Cause of operation
Air
conditioner
status
Display flashing
error
Outdoor P.C. All OFF Flashes after
board
Current on inverter circuit
is over limit in short time. error is detected
8 times*.Inverter P.C. board is
failure, IGBT shortage, etc.
Compressor current is
higher than limitation,
lock rotor, etc.
1. Remove connecting lead wire of the
compressor, and operate again.
2. If outdoor fan does not operate or
operate but stop after some period,
replace the inverter P.C. board.
3. If outdoor fan operates normally,
measure 3-Phase output of inverter
P.C. board (150-270VAC) at the
connecting lead wire of compressor.
4. If 3-Phase output is abnormal, replace
inverter P.C.Board.
5. If 3-Phase output is normal, replace
compressor. (lock rotor, etc.)
All OFF Flashes after
error is detected
8 times*.
Compressor position-detect
circuit error or short-circuit
between winding of
compressor.
1. Remove connecting lead wire of the
compressor, and operate again.
2. If outdoor fan does not operate or
operation but stop after some period,
replace the inverter P.C. board.
3. If outdoor fan operates normally,
measure resistance of compressor
winding. If circuit is shortage, replace
the compressor.
All OFF Flashes afterCurrent-detect circuit of
inverter P.C. board error. error is detected
4 times*.
Even if trying to operate again, all
operations stop, replace inverter
P.C. board.
All OFF Flashes after
error is detected
4 times*.
1. Check sensors, TE, TS connection. In
case of sensors and it’s connection is
normal, check the inverter P.C. board
2. Check 4way valve operation/position.
In case TE, TS detected temperature
relationship are different from normal
operation, “18” might be detected.
TE or TS sensor; abnormal.
Out of place, disconnection,
shortage, or misconnection
(TE sensor is connected to TS
connector, TS sensor is
connected to TE sensor
connector)
TE sensor; Outdoor heat
exchanger temperature sensor
TS sensor; Suction pipe
temperature sensor
All OFF Flashes after
error is detected
TD sensor ; Discharge pipe
temperature sensor is
disconnection or shortage. 4 times*.
1. Check sensors TD and connection.
2. In case of the sensor and its
connection is normal, check the
inverter P.C. board.
All OFF Flashes after
error is detected
Outdoor fan failure or its
drive-circuit on the inverter
P.C. board failure. 8 times*.
1. Check the motor, measure winding
resistance, shortage or lock rotor.
2. Check the inverter P.C. board.
Operation Record error
continues. after detected
TO sensor ; The outdoor
temperature sensor is
disconnection or shortage.
4 times*.
But does not
1. Check sensors TO and connection.
2. In case of the sensor and its
connection is normal, check the
inverter P.C. board.
flash display.
Action and Judgment
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