Specifications

-51-
6. Troubleshooting
Before you ask for repair service, check the following points:
LCD remote controller error display
State of Machine
Cool or warm air
does not come out.
CauseLCD remote Controller
Air flows out but
it does not cool or
heat enough.
It does not run.
Troubleshooting
The liquid crystal
display shows that
it is in operation.
The liquid crystal
display shows that
it is in the state of
operation.
Improper temperature adjustment.
The earth leakage breaker is gone.
The fuse in the power supply is gone.
The power supply is turned OFF.
Power failure
The restart-preventing circuit is in operation for
3 minutes.
Windows or doors are open.
There are some obstacles at the air inlet or
outlet of the units.
The filter is filled with dust and dirt.
Turn the power supply ON.
Press the [ON/OFF] button after power restoration.
Close.
Remove.
Clean up the filter.
After checking the set temperature and inlet
temperature on the liquid crystal display, refer to
[To change room temperature] on page 6, and
operate the adjustment button.
Put in the earth leakage breaker.
Replace fuse.
Wait for a while.
(To protect the compressor, a 3-minute restart-
preventing circuit is built into the unit.
Therefore, there are occasions sometimes when
the compressor does not start running immediately.
There are cases when it does not run for as long
as 3 minutes.)
“ON-OFF” display is
not lit up.
No display appears
even when the [ON/
OFF] button is
pressed.
Fan runs but compressor do not run.
The set temperature of thermostat is
excessively high for cooling.
excessively low for heating.
For temperature control,
decrease the set temperature at cooling.
increase the set temperature at heating.
The room temperature is
excessively low for cooling.
excessively high for heating.
Can not be operated as it is out of temperature
control range.
Compressor runs but stops immediately. Air outlet or inlet are blocked. Remove blocking matter.
Water or steam is discharged from the unit.
At cooling, water which places to cooling piping
and piping connection part drops.
When heating, water which places to the heat
exchanger drops.
The drain pipe is clogged due to dust, therefore
the drain water overflow.
It is not a breakdown.
Please contact and consult your dealer.
Insufficient refrigerant charge.
Contact with your installing contractor.
Wait for a while.
(Heating operation starts after ending defrosting
operation.)
On heating, the air flow stops although a set
temperature is not reached.
On heating, the air flow stops.
Outdoor unit operation shift to defrost. It is not a breakdown.
Please use as it is.
E01
E02
E03
Automatically reset to restoration error
Automatically reset to restoration error
Push the On-Off switch. (OFF to ON)
Room temperature sensor open
Room temperature sensor short
Error input from Indoor unit or Outdoor unit
Can not change to
Heat mode.
DIP switch 1 is not correct. Change the DIP switch off to on.
(Refer to Instruction manual for Installation.)
Can not change to
Heat mode when
press the “MODE” key.
Indoor unit operation shift to defrost.
(PRHG-8,10 only)
Wait for a while.
(Heating operation starts after ending defrosting
operation.)
On heating, cool air comes out.
Indoor unit operation shift to defrost.
(PRHG-15,20 only)
The wiring phase of power supply is mistaken. Modify the wiring phase of power supply.
Indicate Cause Troubleshooting