Gree Feng Yun Series - PCB Function Manual and Operation; Running Modes; Input Parameters; Operational Targets

Feng Yun Series
- 34 -
5 In 1 PCB Function manual
A. running mode
1. cooling 2.dehumidifying 3.heating 4.fan 5.auto
B. input parameters
1.indoor ambient temp. T
in
2.evaporator tube temp. T
eva
3.setting temp. T
set
4.condenser tube temp. T
con
5.outdoor ambient temp. T
out
C. targets
1. indoor motor ( PG motor )
2. swing motor
3. outdoor motor ( two speeds motor)
4. compressor
5. four-way reversing valve
6. electric heater
7. fresh motor
8. air cleaner
D. fundamental functions
1. cooling mode
(1)the running conditions and control measures
a. if T
in
T
set
+ 1 , the machine runs at the cooling mode. Compressor runs, outdoor motor
runs at low speed , indoor fan runs at the set fan speed.
b. if T
in
T
set
-1
, the machine stops. Compressor stops first , outdoor motor stops after 15
seconds , indoor motor runs at the set fan speed.
c. if T
set
-1 T
in
T
set
+1 ,keep the previous state.
(2)in this mode, the reversing valve is inactive, the temp. setting range is from 16~30
.
(3)Protect function
a. anti-freezing function.
If compressor have run 6 minutes , and detect T
eva
< 0 for continuous 3 minutes, then the
compressor , outdoor fan stopped , indoor fan run at the set fan speed. After 3 minutes later, it will
run at the original state if T
eva
10 .
b. compressor protection
9. PCB function manual