25
When frost forms on the OU, the heating performance will
decrease. This will cause the unit to automatically switch to defrost
operation, and hot air will stop blowing out from the IO.
The message “In operation for defrosting.” will be displayed on the
message display. After the defrost operation has completed, “In
operation for defrosting.” will disappear, and the unit will switch
back to its normal heating operation.
“In operation for defrosting.” display
To prevent any cold air blowing out from the IO at the start of a
heating operation, the unit stops the fan and displays “In operation
for heating standby.” on the message display.
When the unit is ready to blow out hot air, the message “In
operation for heating standby.” disappears, and the unit will start
heating operation.
“In operation for heating standby.” displayed
When you select to enable warming up by the Set ON timer by hour
(
☞
page 18) or Set ON timer by clock (
☞
page 19), the operation
will start 50 to 60 minutes earlier, which is predicted based on the
previous warm up operation, so that the room will be close to the
set temp by the time it reaches the operation start time.
During the warm up operation, the message “In operation for
warming up.” will be displayed on the message display.
This message will disappear at the time set for operation start.
“In operation for warming up.” display
Menu
Heating
20:20 (Tue)
F1: High power
F2: Energy-saving
Timer
In operation for defrosting.
Set temp
Direction
Menu
Heating
20:20 (Tue)
F1: High power
F2: Energy-saving
Timer
In operation for heating standby.
Set temp
Direction
Menu
Cooling
20:20 (Tue)
F1: High power
F2: Energy-saving
ON
In operation for warming up.
Set temp
Direction
This does not indicate a failure; the message indicates that the unit
is controlled through a central control device.
[Operations allowed during central control]
•
Filter sign reset
•
Administrator settings
“Invalid request. Central control active.” display
When the unit is controlled through a central control device (not included), and you performed an operation other
than the followings, the message “Invalid request. Central control active.” is displayed.
These messages will be displayed when the unit is operated
through IO external input.
This does not indicate a failure; the message indicates that the unit
is operated through IO external input.
“In temporary stop mode”, “In forced thermostat OFF”, “In setting
temperature shift” displays
Menu
Direction
Cooling
16:32 (Mon)
F1: High power
F2: Energy-saving
Timer
In temporary stop mode
Set temp
When rotation, capacity back-up, or fault back-up operation is
enabled during installation, a message indicating the operation that
is set and running will be displayed on the message display.
Refer to the installation manual on how to make these settings.
“In operation for rotation.”, “In operation for capacity back-up”,
“In operation for fault back-up” displays
Menu
Cooling
16:32 (Mon)
F1: High power
F2: Energy-saving
Timer
Invalid request. Central control active.
Set temp
CENTER
Direction
Menu
Cooling
16:32 (Mon)
F1: High power
F2: Energy-saving
Timer
In operation for rotation.
Set temp
Direction
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