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7-8. Compressor preheating
By preheating the compressor, warm airflow is quickly discharged when the operation is started.
•
Triggering condition
– 30 minutes after compressor stopped.
– Outdoor unit heat exchanger temperature (Tn)
-4°C
Off
On
Tn
Tn
-2°C
7-9. External electrical heater control (For Compact cassette,
Mini duct, Slim duct, Medium static pressure duct, KGTE,
KMTE, KMCE, and KETE series wall mounted and Ceiling
types)
The external electrical heater is operated as below.
When the room
temperature rises
When the room
temperature drops
Ts: Setting temperature
Heater : Off
Heater : On
Heater : Off
Ts -10
°
C
Ts -1
°
C
Ts -3
°
C
Ts -12
°
C
NOTES:
• When the compressor stop, external electric heater is off.
• It operates only in heating mode and when the indoor fan operates. (However, S-LOW is exclud-
ed.)
7-10. Electronic expansion valve control
The most proper opening of the electronic expansion valve is calculated and controlled under the
present operating condition based on the table below.
Operation mode
Pulse range
Cooling/dry mode
Between 30 and 480 pulses
Heating mode
NOTE:
At the time of supplying the power to the outdoor unit, the initialization of the electronic ex-
pansion valve is operated (700 pulses are input to the closing direction).
7-8. Compressor preheating
- (04-72) -
7. Various control
CONTROL AND
FUNCTIONS
CONTROL AND
FUNCTIONS
Содержание ABHG18KRTA
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Страница 5: ...1 GENERAL INFORMATION 2022 08 08 SR_CH01_MU004EG_06 ...
Страница 59: ...2 TECHNICAL DATA AND PARTS LIST 2022 08 08 SR_CH02_MU004EG_11 ...
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Страница 212: ...9 17 Model AOHG36KBTA5 02 150 9 PC board diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...
Страница 213: ...3 TROUBLESHOOTING 2022 08 08 SR_CH03_MU004EG_07 ...
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Страница 316: ...6 2 Outdoor unit 03 100 6 Thermistor resistance values TROUBLESHOOTING TROUBLESHOOTING ...
Страница 317: ...4 CONTROL AND FUNCTIONS 2022 04 13 SR_CH04_MU004EG_08 ...
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Страница 403: ...5 FILED WORKING 2022 08 08 SR_CH05_MU004EG_08 ...