16) Heat pump backup setting
Enables or disables the heat pump backup instruction from the outdoor unit.
This function will be usable provided that the corresponding outdoor unit is connected.
Function number Setting value Setting description Factory setting
72
00 Disable ♦
01 Enable
17) Emergency heat for external output terminal
Enables or disables emergency heat input.
Function number Setting value Setting description Factory setting
73
00 Disable ♦
01 Enable
NOTE: When this function is used, IR receiver unit is necessary.
18) Heat insulation condition (building insulation)
Heat insulation conditions differ according to the installed environment.
"Standard insulation" (00) allows system to rapidly respond to the cooling or heating load changes.
"High insulation" (01) is when the heat insulation structure of the building is high and does not re-
quire system to rapidly respond to cooling or heating load changes.
When "High insulation" (01) is selected:
• Overheating (overcooling) is prevented at the start-up.
• All room-temperature control settings (Function 30, 31, 35, and 36) will reset to "No correction
0.0 °F (0.0 °C)".
Function number Setting value Setting description Factory setting
95
00 Standard insulation ♦
01 High insulation
NOTE: When changing Function 95, perform this setting before other room-temperature control
settings (Function 30, 31, 35, and 36). If Function 95 is not set first, room-temperature con-
trol settings (Function 30, 31, 35, and 36) will be reset and you must re-do them again.
19) Special cooling operation
Stabilizes the cooling operation when the outdoor temperature is low.
• Operation mode: Fixed at COOL
• Airflow: Fixed at HIGH
• Set temperature: 76°F (24°C) to 88°F (30°C)
Function number Setting value Setting description Factory setting
96
00 Disable ♦
01 Enable
NOTES:
• Connect the optional wired remote controller to change the setting value to “Enable” (01).
• Do not use the wireless remote controller after changing the setting value to “Enable” (01).
• If the wired remote controller becomes noncommunicable after setting “Enable” (01), the cooling
operation starts automatically.
• If dew condenses on the indoor unit surface after setting “Enable” (01), set the setting value
back to “Disable” (00).
- 60 -
11-1. Function settings by using remote controller
11. Function settings
WALL MOUNTED
ASUH18-24LMAS
WALL MOUNTED
ASUH18-24LMAS
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