Toshiba MMC-P0151H, Руководство по обслуживанию

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3-44
Check
code
Detected
position
Check code
name
Cause (Position)
Trouble detection
condition
Check item (Position)
04 Interface Inverter
communication
alarm
Inverter serial
signal Serial signal from
inverter interruption. • Outdoor P.C. board (Interface, IPDU) error
• Check communication connector (CN600)
between outdoor interface and IPDU P.C.
boards.
08 Interface 4-way valve
reversal alarm
4-way valve
circuit Abnormal refrigerating
cycle data was
detected in heating
operation. <Check for all the outdoor units in the
identical line is necessary.>
• 4-way valve is defective.
• Check defective 4-way valve coil and
connection of connectors.
• Check characteristics of TS sensor/TE
sensor resistance value.
• Check characteristics of Pd pressure
sensor/Ps pressure sensor output voltage.
• Check power supply wiring of fixed-speed
compressor and Mg-SW error.
0b Indoor Indoor drain
overflow alarm Float switch • Float switch operates
continuously for 2
minutes.
• Float switch circuit
disconnected or
connector out of
place.
• Check connection of float switch connector
(CN11) (Indoor main P.C. board
(MCC-1361)).
• Check drain pump operation.
• Check drain pump circuit.
• Check for blockage of water drain pipe.
• Check failure of indoor main P.C. board
(MMC-1361).
0C Indoor Indoor TA
sensor alarm Indoor temp.
sensor (TA) Sensor resistance
value was infinity or
zero (Open, Short
circuit). • Check connection and wiring of TA
connector (CN04).
(Indoor main P.C. board (MCC-1361)).
• Check characteristics of TA sensor
resistance value.
• Check failure of indoor main P.C. board
(MMC-1361).
11 • Check connection and wiring of fan
connector (CN07, CN18).
• Check running capacitor error for indoor fan.
• Check fan motor error.
• Check indoor P.C. board error.
• Check effect of outside air process (OA).
11
(4DC)
Indoor Indoor fan
motor alarm Indoor fan motor
circuit Status that detection
value of motor speed is
incorrect continuously
• Check connection and wiring of fan
connector (CN33, CN34)
(Indoor motor P.C. board (MCC-1382)).
• Check connection of lead wire between
connector (CN28) of indoor main P.C.
board (MCC-1361) and connector (CN27)
of indoor motor P.C. board (MCC-1382).
• Check indoor fan motor error.
• Check failure of indoor main P.C. board
(MCC-1361).
• Check failure of indoor main P.C. board
(MCC-1382).
• Check effect of outside air process (OA).
12 Indoor Other indoor
error Indoor P.C. board
(EEPROM/
Peripheral circuit) Indoor P.C. board
(MCC-1361) is not
operating correctly. • Check power supply voltage.
• Check noise of peripheral equipment.
• Check failure of indoor main P.C. board
(MCC-1361).
14 Inverter G-Tr short-
circuit
protective
system error Inverter over-
current protective
circuit Instantaneous over-
current was detected
when inverter
compressor was
activated. • Check power supply wiring.
• Check connection on IPDU P.C. board.
• Check reactor connection.
• Check AC fuse disconnection.
• Check cause of abnormal overload
operation.
• Check inverter compressor error and short
circuit.
• IGBT conductive check
• Check shortage of capacitor capacity.
• Check outdoor P.C. board (IPDU) error.
3-6-3. Check Codes Displayed on the Remote Controller and
Outdoor Unit and Check Positions