Toshiba MMW-UP0271LQ-E Service Manual page 18

No. Item
10 Defrosting While the outdoor unit is engaged in defrosting control, the hot water modules
control perform the following control tasks:
1) Close the hot water module PMV to a certain degree and open the SV valve.
After defrosting control is completed, heating refrigerant (oil) recovery control is
performed.
(For control details, see "Heating refrigerant (oil) recovery control" above.)
11 Short intermittent 1. For 5 minutes after startup, the system is forced to continue operating even if it
operation reaches the thermostat OFF region.
compensation 2. However, priority is given to cooling / heating selection, operation standby, and
control protective control, so that there is no overriding of thermostat OFF in these cases.
12 Operation <Operation standby> .......... Displayed on remote controller
standby
1. When any of the check code listed below is displayed
Heating standby • "P05" - Detection of an open phase in the power supply wiring
• "P10" - Detection of indoor flooding in at least one indoor unit except for the hot
• "L30" - Detection of an interlock alarm in at least one indoor unit
2. The system is engaged in a heat refrigerant (oil) recovery operation.
<Heating standby> .......... Displayed on remote controller
1. Normal thermostat OFF
• During heating operation, the hot water module goes thermostat OFF depending on
2. Forced thermostat OFF
• "HEAT" operation is unavailable because at least one indoor unit is operating in
water module.
water temperature. For details, refer to item "No.4 Water temperature control".
"COOL / DRY" mode .
Specification
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Remarks
• Control is performed
per two hours or
when the outdoor
unit determines its
need.(It varies
depending on the
indoor units
connected.)
• "OPERATION
STANDBY "
displayed
• "HEATING
STANDBY "
displayed