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10.1 System marks
On the condition that multi MRV II systems are installed, in order to conrm the relationship between outdoor and
indoor, please make marks on outdoor electric control box cover to indicate the connected indoor unit.
As the below gure:
Indoor model:
10.2 Trial operation sequence
10.3 Inspection before trial operation
Before inspection, conrm the state of indoor and outdoor to avoid the trial failure because of the incorrect installation.
10.3.1 Indoor unit conrmation
No. Inspection items Results
1
If indoor unit is in good condition, and if the electric box position is in accordance with the
state when out of factory, also if it is xed rmly.
2
If indoor wiring is correct. If the connecting terminal of the fan motor, swing motor and water
pump is connected well. If the sensor is in good condition and it is at the proper place.
3
If the dip switch of indoor unit is set correctly. If the indoor address, central controller address,
wired controller address and its other selection are correct.
4 If the wire sequence of wired controller is correct.
5
Before being electried, measure the resistors among live wire, neutral wire and earthing
point on the terminal block with the 500V ohmmeter. The resistor must be over 1 M Ohm.
Inspection before trial operation
State setting of trial operation
Conrm data of trial operation
Indoor conrmation Wiring conrmation
Outdoor conrmation System conrmation
Power on conrmation
Rated operation
Solve the problems if failure occurs
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