Fujitsu ASUH24LPAS Service Manual

7-6. Fresh air control
The fan motor for Fresh Air is operated in synchronization with the indoor fan operation as below.
Operation
Stop
Operation
Stop
Fan motor
(Indoor unit)
Fan motor
(for Fresh Air)
7-7. 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)
Off
On
Tn
Tn
28.4
°F
(-2°C)
24.8
°F
(-4°C)
When the jumper wire (JM2) is disconnected:
41.0°F
(5°C)
Off
On
Tn
Tn
44.6
°F
(7°C)
7-8. External electrical heater control
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 -
5.4°F
(Ts -3°C)
Ts -
21.6°F
(Ts -12°C)
Ts -
1.8°F
(Ts -1°C)
Ts -18.0°F
(Ts -10°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.)
7-6. Fresh air control
- (04-25) - 7. Various control
CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS

Fujitsu ASUH24LPAS Specifications

General

Brand	Fujitsu
Model	ASUH24LPAS
Category	Air Conditioner
Language	English