Auxiliary heater control by outdoor temperature 1
This control selects heat pump or external heater according to the outdoor temperature. When out-
door temperature is high, the heating is performed by using heat pump only.
• Compact cassette type
Operation Condition
Heater on
Heater is on as shown in following diagram of heating
temperature.
Heater off
• Heater is off as shown in following diagram of heating
temperature.
• Other than heating mode
• Error occurred
• Forced thermostat off
• Heat pump only zone
• Slim duct type
Operation Condition
Heater on
Heater is on as shown in following diagram of heating
temperature.
Heater off
DIP-SW101-3 On • Heater is off as shown in following diagram of heating
temperature.
• Other than heating mode
• Error occurred
• Forced thermostat off
• Heat pump only zone
• Fan stop protection
Indoor unit fan
setting for
external heater
Enabled
DIP-SW101-3 Off • Heater is off as shown in following diagram of heating
temperature.
• Other than heating mode
• Error occurred
• Forced thermostat off
• Heat pump only zone
Indoor unit fan
setting for
external heater
Disabled
• Temperature of heater on (Thon): Adjustable by function number 62 (Operating temperature
switching of external heaters).
• All control temperatures will shift by adjusting “Thon”.
• Outdoor temperature zone boundary A and B: Adjustable individually by function setting number
66 and 67.
• External heater output
Tr: Room temperature
Ts: Set temperature
Thon: Heater on temperature
Tr-Ts
Off
On
*
Tr-Ts ≥ 0.9°F
(0.5°C)
Tr-Ts (=Thon) < -0.9°F (-0.5°C)
*: When room temperature stays in this zone for a specific time, auxiliary heater is turned on. For
details, refer to function number 71.
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11-4. Details of function 11. External input and output (Compact cassette type and slim duct type indoor unit)
MULTI-SPLIT TYPE
5-unit type
MULTI-SPLIT TYPE
5-unit type