Toshiba MCY-MHP0305HT-C Service Manual page 94

Using indoor unit indicators (receiving unit light block) (wireless type)
To identify the check code, check the 7-segment display on the outdoor unit. To check for check codes not
displayed on the 7-segment display, consult the "List of Check Codes (Indoor Unit)" in "9-2. Troubleshooting
method".
L g i t h b o l c k C h e c k
Operation Timer Ready
–
All lights out
E01
Operation Timer Ready
E02
E03
Blinking
E08
E09
E10
E12
E18
E04
Operation Timer Ready
E06
E07
Blinking
E15
E16
E20
E31
P01
Operation Timer Ready
P10
P12
Alternate blinking
P13
P03
Operation Timer Ready
P04
P05
Alternate blinking
P07
P15
P19
P20
P22
P26
P29
P31
F01
Operation Timer Ready
F02
F03
F10
Alternate blinking
: Goes off
c o d e
Power turned off or error in wiring between receiving and indoor units
Faulty reception
Faulty transmission
Loss of communication
Duplicated indoor unit No. (address)
Duplicated master remote controller
Indoor unit inter-MCU communication error
Automatic address starting error
Error or poor contact in wiring between indoor units, indoor power turned off
Error or poor contact in wiring between indoor and outdoor units
(loss of indoor-outdoor communication)
Faulty reception in indoor-outdoor communication (dropping out of indoor unit)
Faulty transmission in indoor-outdoor communication
Indoor unit not found during automatic address setting
Too many indoor units connected / overloading
Detection of refrigerant piping communication error during automatic address setting
IPDU communication error
Indoor AC fan error
Indoor overflow error
Indoor DC fan error
Outdoor liquid backflow detection error
Outdoor discharge (TD) temperature error
Outdoor unit High-pressure SW is activated.
Power failure
Inverter DC voltage (Vdc) error
Outdoor heat sink overheating error - Poor cooling of electrical component (IGBT) of outdoor unit
Gas leak detection - insufficient refrigerant charging
Outdoor 4-way valve reversing error
Activation of high-pressure protection
Outdoor fan IPDU error
Outdoor G-Tr short-circuit error
Compressor position detection circuit error
Shutdown of other indoor unit in group due to fault (group follower unit error)
Heat exchanger temperature sensor (TCJ) error
Heat exchanger temperature sensor (TC2) error
Heat exchanger temperature sensor (TC1) error
Ambient temperature sensor (TA) error
93
116
: Lighting
C a u s e f o a f u t l
Receiving unit
Error or poor contact in wiring between
receiving and indoor units
Setting error
Indoor unit temperature sensor errors
: Blinking (0.5 seconds)