Toshiba MMK- UP0301HP Series, Service Manual

Page: 82 / 147

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