Toshiba MMY-MAP0726FT2P-UL - Page 144

Using indoor unit indicators (receiving unit light block) (wireless type)
To identify the check code, check the 7-segment display on the header 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”.
: Goes off : Lighting : Blinking (0.5 seconds)
Cause of check code
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–
Power turned off or trouble in wiring between receiving and indoor units
E01
Receiving unit
Trouble or poor contact in
wiring between receiving
and indoor units
E02
Troubled reception
Troubled transmission
E03 Loss of communication
E08 Duplicated indoor unit No. (address)
Setting trouble
E09 Duplicated master remote controller
E10
Indoor unit inter-MCU communication trouble
E12
Automatic address starting trouble
E18 Trouble or poor contact in wiring between indoor units, indoor power turned off
E04
Trouble or poor contact in wiring between indoor and outdoor
units (loss of indoor-outdoor communication)
E06
Troubled reception in indoor-outdoor communication (Signal lack of indoor unit)
E07
Troubled transmission in indoor-outdoor communication
E15 Indoor unit not found during automatic address setting
E16 Too many indoor units connected/overloading
E19
Trouble in number of outdoor header units
E20
Detection of refrigerant piping communication trouble during automatic address setting
E23
Troubled transmission in outdoor-outdoor communication
E25 Duplicated follower outdoor address
E26
Troubled reception in outdoor-outdoor communication, Signal lack of outdoor unit
E28
Outdoor follower unit trouble
E31
IPDU communication trouble, sub MCU communication trouble
P01
Indoor AC fan trouble
P10 Indoor overflow trouble
P12
Indoor DC fan trouble
P13
Outdoor liquid backflow detection trouble
P03
Outdoor discharge (TD1) temperature trouble
P04 Activation of outdoor high-pressure SW
P05
Inverter DC voltage (Vdc) trouble
AC detection circuit trouble
P07
Outdoor heat sink overheating trouble - Poor cooling of electrical component (IPM) of outdoor unit
P15 Gas leak detection - insufficient refrigerant charging
P17
Outdoor discharge (TD2) temperature trouble
P19
Outdoor 4-way valve reversing trouble
P20 Activation of high-pressure protection
P22
Outdoor fan IPDU trouble
P26
Outdoor IPM short-circuit trouble
P29
Compressor position detection circuit trouble
P31
Shutdown of other indoor unit in group due to fault (group follower unit trouble)
Operation Timer Read
y
All lights out
Blinking
Operation Timer Read
y
Blinking
Operation Timer Ready
Alternate blinking
Operation Timer Ready
Alternate blinking
Operation Timer Ready
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E17 Communication trouble between indoor unit(s) and FS unit(s)