Toshiba MiNi-SMMS MCY-MAP0501HT Service Manual page 120

Check code
Outdoor 7-segment display
Wired
remote
controller Check code
Auxiliary code
H06 H06 —
L03 — —
L04 L04 —
L05 — —
L06 L06 No. of indoor units with
priority
L07 — —
L08 L08 —
L09 — —
L10 L10 —
L20 — —
L28 L28 —
Detected
Check code name
AI-NET
position
central control
remote controller
20 I/F Low-pressure protective operation
96 Indoor Duplicated indoor center units
96 I/F Duplicated outdoor line address
96 I/F Duplicated indoor units with priority
(Displayed on indoor unit with priority)
96 I/F Duplicated indoor units with priority
(Displayed on the unit other than
indoor unit with priority)
99 Indoor Group line in individual indoor unit.
99 Indoor Indoor group / address unset
46 Indoor Indoor capacity unset
88 I/F Outdoor capacity unset
98 AI-NET, Duplicated central control addresses
Indoor
46 I/F Quantity over of connected outdoor
units
Status Error detection condition
All stop Low-pressure Ps detected
operation lower than 0.02MPa.
Corresponding There are multiple header units
unit only stops. in a group.
All stop Line address setup is duplicated
against the outdoor unit in
different refrigerant pipe system.
All stop Indoor units with priority were
duplicated.
All stop Indoor units with priority were
duplicated.
Corresponding At least one indoor unit
unit only stops. connected to a group existed in
the individual indoor units.
Corresponding Address was not yet set up.
unit only stops.
Corresponding Indoor unit capacity was unset.
unit only stops.
All stop On the I/F P .C. board for service,
jumper line was not cut
according to the model.
All stop Duplicated central control
addresses
All stop There were more than four
outdoor units.
Check item (position)
• Check full opening of service valve.
(Discharge gas and liquid side)
• Check outdoor PMV clogging.
• Check SV2 circuit and SV4 circuit error.
• Check low-pressure Ps sensor error.
• Check indoor air filter clogging.
• Check valve open of indoor PMV.
• Check refrigerant pipe clogging.
• Check outdoor fan operation. (In heating mode)
• Check refrigerant shortage.
• Check 4-way valve error. (Reversed error.).
• Check indoor address.
• Check the change of remote controller connection
(Group/individual) after indoor address setup.
• Check line address.
• Check display of indoor unit with priority.
• Check display of indoor unit with priority and outdoor
unit.
• Check indoor address.
• Check indoor address.
Note)
After installation, this code is displayed when the power
is first turned on.
Set up indoor capacity. (DN=11)
Check model setup on outdoor I/F P .C. board A'ssy for
service.
• Check central control address.
• Check network adaptor P .C. board. (In case of AI-NET)
• Check No. of connected outdoor units.
(Max. 4 units per 1 system)
• Check communication line between outdoor units.
• Check outdoor P .C. board (I/F) error.