Checks After Adding Refrigerant; Before Operation; Service Precautions - Daikin CMSQ200A7W1B Installationsanleitung

Charging while the outdoor unit is operating
1 Completely open the gas line stop valve.
Valve A must be left fully closed.
Make sure the liquid stop valve is totally shut. If it is open, the
refrigerant cannot be charged.
Charge the additional refrigerant in its liquid state through the
service port of the liquid line stop valve.
2 While the unit is at standstill and under setting mode 2 (refer to
Checks before initial start-up, "Setting the mode" on page 19),
set the required function A (additional refrigerant charging
operation) to (ON). Then operation starts. The blinking H2P
ON
led indicates test operation and the remote controller indicates
(test operation) and
3 When the specified amount of refrigerant is charged, push the
button. Then operation stops.
BS1 MODE
The operation automatically stops within 30 minutes.
If the refrigerant charge cannot be finished within 30 minutes,
repeat step 2.
If the operation stops immediately after restart, there is a
possibility that the system is overcharged.
The refrigerant cannot be charged more than this amount.
4 After the refrigerant charge hose is removed, make sure to fully
open the liquid stop valve. Otherwise the piping may burst due to
blocked liquid.
5 After the refrigerant is charged, turn on the power for the indoor
units and for the outdoor unit.

11.6. Checks after adding refrigerant

Are the stop valves for both liquid and gas open?
Is the amount of refrigerant, that has been added, recorded?
Make sure to open the stop valves after charging the
refrigerant.
Operating with the stop valves closed will damage the
compressor.
CMSQ200+250A7W1B
Air conditioning system
4PW47543-1
(external control).
12. B
EFORE OPERATION
12.1.

Service precautions

WARNING: ELECTRIC SHOCK
Caution when performing
equipment
1 Do not open the electric box cover for 10 minutes after
the power supply is turned off.
2 Measure the voltage between terminals on the
terminal block for power supply with a tester and
confirm that the power supply is shut off.
In addition, measure the points, as shown in the figure
below, with a tester and confirm that the voltage of the
capacitor in the main circuit is less than 50 V DC.
A2P A2P
TP1 TP2
3 To prevent damaging the PC-board, touch a
noncoated metal part to eliminate static electricity
before pulling out or plugging in connectors.
4 The performing of the service to the inverter
equipment must be started after the junction
connectors X1A and X2A for the fan motors in the
outdoor unit are been pulled out. Be carefull not to
touch the live parts.
(If a fan rotates due to strong wind, it may store
electricity in the capacitor or in the main circuit and
cause electric shock.)
5 After the service is finished, plug the junction
connecter back in. Otherwise the error code E7 will be
displayed on the remote controller and normal
operation will not be performed.
For details refer to the wiring diagram labeled on the back
of the electric box cover.
Pay attention to the fan. It is dangerous to inspect the unit while the
fan is running. Be sure to turn off the main switch and to remove the
fuses from the control circuit located in the outdoor unit.
NOTE Play it safe!
For protection of the PCB, touch the switch box casing
by hand in order to eliminate static electricity from your
body before performing service.
service to inverter
A1P
A3P
Installation manual
17