Table of Contents
Warning:
Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
Caution:
Some installation sites may require attachment of an earth leakage breaker for the inverter. If no earth leakage breaker is installed, there is a danger of
electric shock.
12. Test run
12.1. The following phenomena do not represent faults.
Phenomenon
Indoor unit does not perform cooling
The auto vane rotates and begins to blow air
horizontally.
Fan setting changes during heating.
Fan does not stop while operation has been
stopped.
No setting of fan while start SW has been
turned on.
Indoor unit remote controller shows "H0"
minutes when turning ON universal power
supply.
Drain pump continues to operate even after
the unit has been turned off.
Indoor unit emits noise when switching from
heating to cooling and vice versa.
Immediately after startup, the indoor unit
Warm air comes from an indoor unit that is
not performing a heating operation.
34
Display of remote controller
Normal display
Normal display
No lighting
Heat ready
No display
Normal display
Normal display
Normal display
Cause
If air has been blowing downward for 1 hour during cooling, the unit may
automatically change to horizontal blowing with the control operation of the
auto vane. During defrosting or immediately after heating start-up/shut-down,
the auto vane automatically rotates to blow air horizontally for a short period
of time.
Ultra-low speed operation is commenced at thermostat OFF.
Light air automatically changes over to set value by time or piping temperature
at thermostat ON.
The fan is set to run for 1 minute after stopping to exhaust residual heat (only
Ultra low-speed operation for 5 minutes after SW ON or until piping
temperature becomes 35°C, low speed operation for 2 minutes thereafter, and
The system is being started up.
Operate remote controller again after "H0" or "PLEASE WAIT" disappears.
After turning off the cooling operation, unit continues to operate the drain
pump for 3 minutes, then shuts it off.
Unit also continues to operate drain pump if condensate has been generated.
This is a switching sound of the refrigerant circuit and does not imply a
problem.
imply a problem.
The LEV is slightly open to prevent refrigerant, of the indoor unit that is not
problem.
Chapters
Table of Contents
