Gree GVH24AK-K3DNC8A Service Manual page 51

6. Malfunction of Protection of Freeze Protection (E2)
Is there poor air return in the indoor unit?
Is the fan speed abnormal?
Is the evaporator dirty?
System is normal, but the indoor tube
temperature sensor
48
Start
no
no
yes
yes
is abnormal.
no
Replace the
controller
End
Solve the problem
yes
of system.
no
Solve the problem
yes
of speed.
no
Clean the
evaporator
no
Replace the
temperature
sensor
no
Malfunction is
yes
eliminated.
Malfunction is
yes
eliminated.
Problem is
yes
solved.
Problem is
yes
solved.
Installation and Maintenance
Service Manual