Troubleshooting - Gree FP-51XD/A-K User Manual

Precautions before the Seasonal Use
• Check if the air inlet and outlet are clogged or not?
• Check if the unit is reliably grounded?
• Check if the air filter is installed properly or not?
• When the unit is to be started after it has stopped for
quite long time, power the unit on 6 hours ahead.
Precautions after the Seasonal Use
• Clean the air filter
• Cut off the power supply for the unit.

4 Troubleshooting

No. Symptoms
1 The unit does not
run.
There is abnormal
2
noise.
The airflow rate is
3
too low.
The cooling or
4 heating effect is
poor.
Maintenance before and after Seasonal Use
Possible Causes
There is no power supply.
The power plug is loosened.
The motor is burnt out.
The volute or blade is deformed, or
the volute contacts the blade.
The air filter is clogged.
There are foreign matters at the inlet/
outlet or inside the duct.
There is abnormal noise from the
motor.
The fastening screws are loosened.
The air filter is clogged.
There are foreign matters at the return
inlet and air outlet.
The duct resistance exceeds the
design value.
The air filter is clogged.
The dampers are not opened.
The fins are clogged or damaged.
The entering water temperature
cooling is too high and too low for
cooling.
20
Cassette Type FCU
Cut off the
power supply
Corrective Measures
Repower the unit when power supply
is available.
Tighten the power plug.
Replace the motor and check for the
wiring
Replace the volute or the blade.
Clean the filter.
Remove foreign matters.
Replace the motor.
Tighten them.
Clean the air filter.
Clear foreign matters.
Lower the duct resistance or reselect
the unit.
Clean the air filter.
Open the dampers.
Clean or repair fins.
Adjust the entering water temperature.