Toshiba MMU-P0121H Service Manual page 40

Item
15. Frequency fix (1) When holding the START/STOP SW on the remote
operation controller continuously for 5 seconds, the mode changes to
(Trial Trial operation mode. Then, set the indoor fan to "HIGH"
operation) mode to operate the frequency fix.
(2) During operation, other operation.
16. Filter sign (1) The operation time of the indoor fan is measured and stored
display in memory, and it is displayed on the remote controller LCD
after the specified time (120H/2500H).
Selection of 120H/2500H is set at the factory.
(2) When FILTER RESET switch on the remote controller is
pushed, FILTER display disappears.
17. STANDBY (1) When phase order of the power supply wiring is incorrect.
display
• Over capacity combination of indoor units.
• "COOL" operation cannot be performed because other
• Selection of the operation mode is fixed to "COOL" or
• There is an indoor unit which stopped with the indoor
(2) The above indoor unit status that cannot operate enters
standby status when the thermostat is turned off, and this
status continues until STANDBY status is released.
18. Center (1) The contents which can be operated on the remote
selection controller at indoor unit side can be selected by set up at
the central controller side.
[Last-push priority] :
Can be operated from both the remote controller at the
indoor unit and at the central controller, and operates with
the content as per last selection.
[Center] :
START/STOP and the timer operation can be handled on
the remote controller at the indoor unit.
[Operation forbidden] :
Cannot be operated on the remote controller at the indoor
unit. (as STOP status)
Operation explanation and applied data, etc.
indoor unit is under "HEAT" operation.
"HEAT", and an operation reversed to the specification is
tried.
overflow alarm "0b".
3-37
Remarks
Command frequency
COOL [SD] "COOL L"
HEAT [SF] "HEAT H"
"FILTER" goes on.
"STANDBY" goes on.
(No display)
"CENTRAL" goes on.
"CENTRAL" flashes.