Toshiba MMK-UP0051DHPL-E(TR) Service Manual page 86

Check code
Main Outdoor 7-segment display
remote
Check
Sub-code
controller
code
1∗: Fan P.C.
board 1
P22 P22
2∗: Fan P.C.
board 2
1∗: Compressor
1 side
2∗: Compressor
2 side
P26 P26
1∗: Compressor
1 side
2∗: Compressor
P29 P29
2 side
P31 — —
Location
Description System status
of
detection
Fan INV. Outdoor fan All stop
P.C. board P.C. board
trouble
Compressor IPM, All stop
P.C. board Compressor
shortcircuit
protection
trouble
Compressor
Compressor All stop
P.C. board position
detection circuit
trouble
Indoor unit Other indoor Stop of
trouble corresponding
(group follower unit
unit trouble)
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Check code detection
Check items (locations)
condition(s)
Protected operation of Fan • Check fan motor.
inverter P.C. board • Check for failure in fan
P.C. board.
• Check connection of fan
motor connector.
• Check power voltage of
the main power supply.
Overcurrent is momentarily • Check connector
detected during startup of connection and wiring on
compressor. compressor P.C. board.
• Check for failure in
compressor (layer
shortcircuit).
• Check for failure in outdoor
P.C. board ( Compressor).
• Check wiring and
Position detection is not
going on normally. connector connection.
• Check for compressor
layer short-circuit.
• Check for failure in
compressor P.C. board.
There is trouble in other • Check indoor P.C. board.
indoor unit in group,
resulting in detection of
E07/L07/L03/L08.