Toshiba Super MMU-AP0092H Service Manual page 97

Check code
Main Outdoor 7-segment display
remote
Check code Auxiliary code
controller
E31 E31 01: IPDU1 error
02: IPDU2 error
03: IPDU1, 2 errors
04: Fan IPDU error
05: IPDU1 + Fan IPDU error
06: IPDU2 + Fan IPDU error
07: All IPDU error or communication error
between IPDU and I/F P .C. board or
outdoor I/F P .C. board error
F01
— —
F02 — —
F03 — —
F04 F04 —
F05 F05 —
F06 F06 —
F07 F07 —
F08 F08 —
F10 — —
F12 F12 —
F13 F13 01: Compressor 1 side
02: Compressor 2 side
Detected
Check code name Status
position
I/F IPDU communication error All stop
Indoor unit Indoor TCJ sensor error Corresponding
unit only stops.
Indoor unit Indoor TC2 sensor error Corresponding
unit only stops.
Indoor unit Indoor TC1 sensor error Corresponding
unit only stops.
I/F TD1 sensor error All stop
I/F TD2 sensor error All stop
All stop
I/F TE1 sensor error
I/F TL sensor error All stop
I/F TO sensor error All stop
Indoor Indoor TA sensor error Corresponding
unit only stops.
I/F TS1 sensor error All stop
All stop
IPDU TH sensor error
Error detection condition
Communication of each IPDU • Check connection of communication connector and
(P .C. board) in inverter box interrupted. disconnection between IPDU and I/F P .C. board.
• Check outdoor P .C. board (I/F, IPDU, Fan IPDU) error.
• Check external noise.
• Resistance value of sensor is infinite • Check connection/cabling of TCJ sensor connector.
or zero. (Open/Short)
• Check characteristics of TCJ sensor resistance value.
• Check indoor P .C. board error.
• Resistance value of sensor is infinite • Check connection/cabling of TC2 sensor connector.
or zero (Open/Short).
• Check characteristics of TC2 sensor resistance value.
• Check indoor P .C. board error.
• Resistance value of sensor is infinite • Check connection/cabling of TC1 sensor connector.
or zero (Open/Short).
• Check characteristics of TC1 sensor resistance value.
• Check indoor P .C. board error.
• Resistance value of sensor is infinite • Check connection of TD1 sensor connector.
or zero (Open/Short)
• Check characteristics of TD1 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Resistance value of sensor is infinite • Check connection of TD2 sensor connector.
or zero (Open/Short)
• Check characteristics of TD2 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Resistance value of sensor is infinite
• Check connection of TE1 sensor connector.
or zero (Open/Short).
• Check characteristics of TE1 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Resistance value of sensor is infinite • Check connection of TL sensor connector.
or zero (Open/Short).
• Check characteristics of TL sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Resistance value of sensor is infinite
• Check connection of TO sensor connector.
or zero (Open/Short).
• Check characteristics of TO sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Resistance value of sensor is infinite • Check connection/cabling of TA sensor connector.
or zero (Open/Short).
• Check characteristics of TA sensor resistance value.
• Check indoor P .C. board error.
• Resistance value of sensor is infinite
• Check connection of TS1 sensor connector.
or zero (Open/Short).
• Check characteristics of TS1 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Resistance value of sensor is infinite
• IGBT built-in temp sensor error
→ Exchange IPDU P .C. board.
or zero (Open/Short).
Check item (position)