Table of Contents
Advertisement
FUNCTION
22
FUNCTION
Forced Cooling Operation (Pump down)
Adding the refrigerant in winter.
Setting Procedure
- Set the Dip Switch as follow after shutting the power source down.
ATUQ24GNLT0
AVUQ36GM1H0
- Reset the power.
- Red LED and Green LED of PCB lights during work. (The indoor unit is operated by force.)
- If operation is done, Red LED will be turned off.
If operation is not done normally, Red LED will blink.
- Close the Liquid valve only after green LED turned off (7 minutes from the start of the machine).
Then close the gas valve after Green LED on.
WARNING
!
• When the green LED of PCB is on, com-
pressor is going to be off because of low
pressure.
• You should return the Dip Switch to oper-
ate normally after finishing the operation.
• Improper Pump down will lead to product
turn off along with LED (green &red) off
with in 20 minutes from the initial start.
ATUQ36GMLT0
Pump Down Dip S/W Setting
Power on
(Red LED On, Green LED Off)
Comp on
(Red LED On, Green LED On)
Pump Down Start
(Red LED On, Green LED Off)
Pump Down Complete
(Red LED Off, Green LED On)
Power off
(Red LED Off, Green LED On)
6
ATUQ48GMLH0
6
7
8
9 10
AVUQ48GM2H0
Liquid Valve
Closed
Gas Valve
Closed
Advertisement
Table of Contents
