26
TEST OPERATION
1. Before test operation
(1) Do not switch on power before installation
is finished completely.
(2) Electric wiring must be connected cor-
rectly and securely.
(3) Cut-off valves of the connection pipes
should be opened.
(4) All the impurities such as scraps and
thrums must be clear from the unit.
(5) Open the surface panel and set the hand-
ling switch to “RUN” mode.
2. Test operation method
(1) Switch on power and press “ON/OFF” button on the remote control.
(2) Press “MODE” button and check the operation condition of COOL, HEAT, SWING
mode and so on.
(3) When the remote control is lost, emergency run operation can be done as following
by the ball pen or similar things:
(a) At stopping, set the handling switch to “AUTO” mode, then the unit will automatically
run in the mode selected by the microcomputer system according to the surrounded tem
perature. If you want to stop running, you should repress the handling switch.
(b) At operation, set the handling switch to “STOP” mode to turn off the unit.
AUTO/STOP
Check after installation
Items to be checked
Has the unit been fixed firmly?
Have you done the refrigerant leakage test?
Is the pipe insulation sufficient?
Does the unit drain well?
Is the voltage in accordance with the rated
voltage marked on the nameplate?
Is the electrical wiring and piping connec-
tion installed correctly and securely?
Has the unit been connected to a secure
ground connection?
Is the electrical wire the appropriate gauge?
Has the inlet and outlet been covered?
Has the length of connection pipes and the
refrigerant quantity been verified?
Possible malfunction
The unit may drop, shake or emit noise
It may cause insufficient refrigerating capacity.
It may cause condensation and dripping.
It may cause condensation and dripping.
It may cause electric malfunction or dama-
ge the unit.
It may cause electric malfunction or dama-
ge the unit.
It may cause electrical malfunction.
It may cause electric malfunction or dama-
ge the unit.
It may cause insufficient refrigerating
capacity.
Frost on the evaporator/condensor, lack of
capacity, general unit malfunction, possible
damage to compressor
.
Handling Switch
