Toshiba MMU-AP0151MH Cassette Player User Manual


 
59
Check item (position)
Check the lock of fan motor (AC fan).
Check cabling.
Check full opening of outdoor service valves (Gas side, Liquid side).
Check clogging of outdoor PMV. (PMV1,2)
Check characteristics of TD1 sensor resistance value.
Check refrigerant shortage.
Check 4-way valve error.
Check leakage of SV41 circuit.
Check SV4 circuit. (Miswiring and misinstallation of SV41 and SV42)
Check leakage of SV5 circuit.
Check leakage of SV6 circuit. (Capillary clogging, valve operation error)
Check mispiping of discharge gas/suction gas main pipe.
Check Flow selector unit.
Check leakage of SVD valve and SVS valve.
(Check leakage of SVDD valve and SVSS.)
Check mispiping of FS unit connecting pipe (Suction gas/Discharge gas),
wiring between FS unit and indoor unit, and connection of connectors.
Check miswiring of SVS/SVD valves.
Check Pd pressure sensor error.
Check full opening of outdoor service valves (Gas side, Liquid side).
Check outdoor fan error.
Check outdoor fan motor error.
Check clogging of outdoor PMV. (PMV1,2)
Check clogging of indoor/outdoor heat exchangers.
Check short-circuiting of outdoor suction/discharge air.
Check clogging of SV2 circuit.
Check outdoor P.C. board (I/F) error.
Check indoor fan system error. (Cause of air volume decrease)
Check opening of indoor PMV.
Check miscabling of communication line between indoor and outdoor.
Check operation error of check valve of discharge pipe.
Check SV4 valve circuit.
Check SV5 valve circuit.
Check refrigerant overcharge.
Check mispiping of discharge gas/suction gas main pipe.
Check circuit clogging at auxiliary heat exchanger side.
(PMV3, SV12, check valve)
Check FS unit.
Check clogging of SVD valve and operation error.
Check wiring inside of FS unit. (SVD/SVS coil miswiring, etc.)
Check wiring between FS unit and indoor unit.
(Miswiring, Disconnection, Wiring missing)
Check outdoor power line.
Check outdoor P.C. board (I/F) error.
Check code
Main
remote
controller
P01
P03
P04
P05
Outdoor 7-segment display
Check code
P03
P04
P05
Auxiliary code
01: Compressor 1 side
02: Compressor 2 side
01: Power supply open phase
02: Power supply negative phase
Detected
position
Indoor
I/F
I/F
I/F
Check code name
Indoor fan motor error
Discharge temp TD1 error
Actuation of high-pressure
SW
Open phase negative
phase
Status
Corresponding
unit only stops.
All stop
All stop
All stop
Error detection condition
Discharge temp (TD1) exceeded 115°C.
High-pressure SW actuated.
Open phase was detected when the
power turned on.
Negative phase was detected when
the power turned on.