Gree GVH24AK-K3DNC8A Service Manual page 43

Indoor Unit
Malfunction
No.
Name
Outdoor
condenser
temperature
12
sensor is
open/short
circuited
Outdoor
discharge
temperature
13
sensor is
open/short
circuited
Limit/decrease
14
frequency due to
overload
Decrease
15
frequency due to
overcurrent
Decrease
frequency due to
16
high air
discharge
R o t a r y c a s i n g
17
stuck protection
Limit/decrease
18
frequency due to
antifreezing
Decrease
frequency due to
high
19
temperature
resistant during
heating
operation
20 Defrosting
Static dedusting
21
protection
Overload
22 protection for
compressor
System is
23
abnormal
24 IPM protection
40
Display
Method of
Dual-8
Code
Display
Cooling: Compressor stops
and indoor fan operates.
F4
Heating: All the loads are
stopped.
Cooling: Compressor stops
and indoor fan operates.
F5
Heating: All the loads are
stopped.
Loads are running normally.
Compressor operating
F6
frequency is decreased.
Loads are running normally.
Compressor operating
F8
frequency is decreased.
Loads are running normally.
Compressor operating
F9
frequency is decreased.
All the loads are stopped.
FC
Loads are running normally.
Compressor operating
FH
frequency is decreased.
Loads are running normally.
Compressor operating
H0
frequency is decreased.
A normal operation mode under heating
mode. Both
H1
compressor and indoor fan
stop.
H2
Cooling: Compressor stops
and indoor fan operates.
H3
Heating: All the loads are
stopped.
Cooling: Compressor stops
and indoor fan operates.
H4
Heating: All the loads are
stopped.
Cooling: Compressor stops
and indoor fan operates.
H5
Heating: All the loads are
stopped.
A/C status Possible Reasons
Open-circuit or
short-circuit of outdoor
condenser temperature
sensor
Open-circuit or
short-circuit of outdoor
discharge temperature
sensor
Cooling outer tube
temperature is too high.
Heating inner tube
temperature is too high.
Unit's overall current is too
large.
Discharge temperature is
too high.
The rotary casing is stuck
when rotating.
Cooling inner tube
temperature is too low.
Heating inner tube
temperature is too high.
Too much frost on outdoor
condenser.
Compressor temperature
is too high.
Outdoor tube temperature is too high under
cooling mode; Indoor tube temperature is
too high under heating mode
Compressor's current is too
large
Service Manual
Installation and Maintenance