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Operation test
Before test operation, wiring safety inspection must be carried out carefully again.
1. Emergency switch operation: Every press of emergency switch, the
air conditioner runs as in the following order:
Cool only type: Cool
Shut off
Heat pump type: Cool
Heat
Shut off
2. Remote controller operation: If the indoor unit sounds like Di, Di when pressing I/O button,
that indicates the air conditioner is under the operation of remote controller. After that, press
every button to test their functions.
7
Screw the gas shut-off valve to close, connect
charging hose(low pressure) to the service valve
and then open gas shut-off valve again.
Connect the refrigerant bottle to the charging hose
and then convert it.
Fill in liquid refrigerant as the above table.
Disconnect the manifold gauge after turning off the
shut-off valve, and then open gas shut-off valve again.
Exhaust the air as the above-mentioned method.
Tighten nuts and caps of each valve.
Service port
Manifold gauge
Low pressure
valve
High pressure
valve
Pressure meter
Charging line
Adding refrigerant
If the connecting pipe is longer than 7 metres, add refrigerant as needed. (Cool only type) added
amount A=(Lm-7m) 15g/m ; (Heat pump type)added amount A= (Lm-7m) 50g/m. ( A: amount
of added refrigerant, L: the length of connecting pipe)
6
10
7
0
0
8
15
50
9
30
100
10
45
150
The length of connecting pipe (m)
(Cool only type)added amount (g)
(Heat pump type)added amount (g)
3. operation: Open the front grille and press the check button. Switch on the powerCheck switch
source and then the operation test is activated. If the indicator lamps light up at first and then
go out in succession or the LED window of the indoor unit illuminates at first and then goes out,
the system is under normal operation. If one of the indicator lamps is flashing at all times, or
failure codes are displayed on the LED window of the indoor unit, the system has something
wrong and please check malfunction immediately.
12


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