Gree 2000

47
12.Malfunction analysis
Common malfunction and handling method
Breaker tripped or fuse
b
urnt out
Both indoor and outdoo
r
units cannot start up
Air conditioner cannot start up
Improper setting o
f
temperature
Whether cooling
(heating) load is proper
Malfunction o
f
refrigerant flow
Poor cooling (heating) effect
When the breaker is set ON, i
t
will trip at once.
When the unit is turned on, the
breaker will trip in a fe
w
minutes
Measure the insulating
resistance for grounding to
confirm whether there is
electrical leaka
g
e in the unit
Check the breaker and measure
the resistance.
N
o power supply
Check power supply circuit
Transmitting malfunction o
f
wireless remote control
Check wireless remote control
The power plug is not o
r
poorly connected
Check and insert the plug tightly
Wrong wiring between indoo
r
and outdoor unit
Check the circuit according to
the circuit diagram and correc
t
wrong wiring
Controller fuse is burnt out
Change controller fuse
Whether connection betwee
n
strong and weak current boar
d
of controller is fir
m
Make the connecting wire firm
Whether the output wire o
f
transformer is firm, whethe
r
there is voltage output
Make the connecting wire fir
m
and check the output voltage
Adjust the set temperature
Check the estimated load o
f
cooling (heating)
Malfunction of four-way valve Replace the four-way valve
Charge refrigerant
Insufficient refrigerant volume
Replace the compressor
Malfunction of compressor
Insufficient flow volume o
f
valve
Open the valve completely