Gree GPE12AF-K3NNA7A - Maintenance; 7. Notes Maintenance

18
Technical Information
Service Manual
6.2 Introduction of Basic Mode Function
1 Cooling mode
Cooling condition and process
When
Tamb.≥Tpreset+1ć(2), the unit operates in cooling mode. Meanwhile, compressor, draw water motor start operation. Indoor
fan operates at set fan speed. If indoor fan operates at high fan speed or middle fan speed, outdoor fan operates at high fan
speed. If
indoor fan operates at low fan speed, outdoor fan operates at low fan speed.
When
Tamb.≤Tpreset-1ć(2), compressor, outdoor fan and draw water motor stop operation, while indoor fan operates at set fan
speed.
Tp
reset-1ć(2)<Tamb.<Tpreset+1ć(2), the unit keeps original operation status.
Under this mode, 4-way valve is de-energized.
The temperature setting range is 16-30ć(61-86).
2 Dry mode
Drying condition and process
Under this mode, set temperature and ambient temperature won’t be displayed. Indoor fan operates at low fan speed. Compressor,
outdoor fan and draw water motor operates continuousl
y.
3 Heating mode
Working conditions and process for heat pump unit
When
Tamb.≤Tpreset+3ć(6), the unit operates in heating mode. Meanwhile, 4-way valve, compressor operates, and indoor fan
operates
at cold air prevention condition; if indoor fan operates at high fan speed or middle fan speed, outdoor fan operates at high fan
speed. If indoor fan operates at low fan speed, outdoor fan operates at low fan speed.
When
Tpreset+3ć(6)<Tamb.<Tpreset+5ć(10), the unit keeps original operation status,
When
Tamb.≥Tpreset+5ć(10), compressor and outdoor fan stop operation simultaneously. 4-way valve stop operation after the
compressor has stopped for 2 minutes. Indoor fan operates at blowing residual heat conditioner.
Under this mode, the temperature setting range is 16-3
0ć(61-86).
Working conditions and process for electric heating ty
pe unit
When
Tamb.≤Tpreset+3ć, the unit enters heating operation. In that case, electric heater starts up and the indoor fan operates at
setting speed;
When
Tpreset+3ć˘Tamb.˘Tpreset+5ć,the unit will keep its original status.
When
Tamb.≥Tpreset+5ć, electric heater will be turned off and indoor fan will stop after it operates at low speed for 60s.
Th
e temperature setting range is 16~30ć(61~86) under this mode.
4 Fan mode
Under this mode, set temperature and ambient temperature won’t be displayed. Indoor fan operates at set fan speed. Compressor,
outdoor fan, 4-way
valve and draw water motor operates continuously.
Under this mode, the temperature setting range is 16-3
0ć(61-86).
5
Auto mode
5.1 Under auto mode, standard cooling Tpreset=25
ć(77); standard heating Tpreset=20ć(68)
5.2 Heat pump unit: Tamb.>26
ć(79), the unit turns into auto cooling mode; Tamb.< 20ć(68), the unit turns into heating mode;
23
ć(73)≥Tamb. ≥20ć(68), if the unit operates at heating mode previously, the unit keeps heating operation status. If the unit
didn’t operate at heating mode previously, the unit will turn to dr
y mode; 26ć(79)≥Tamb. ≥24ć(74), the unit turns into auto dry
mode. For the first energization, 26
ć(79)≥Tamb. ≥20ć(68), the unit turns into drying operation mode.
5.3 Cooling only
unit: Tamb.>26ć(79), the unit turns into auto cooling mode; Tamb.< 20ć(68), the unit turns into auto fan
mode;2
0ć(68)≥Tamb. ≥23ć(73), if the unit operates at fan mode previously, the unit keeps fan mode operation status. If the unit
didn’t ope
rate at fan mode previously, the unit will turn to dry mode; 26ć(79)≥Tamb. ≥24ć(74), the unit turns into auto dry mode.
Fo
r the first energization, 26ć(79)≥Tamb. ≥20ć(68), the unit turns into drying operation mode.
6 Other function
6.1 Timer
6.1.1 General Timer
Ti
mer ON can be set at unit OFF. If selected ON time is reached, the unit will start to operate according to previous setting status. Time
setting range is 0.5-24hr in 30-minute increments.
Ti
mer OFF can be set at unit ON. If selected OFF time is reached, the unit will stop operation. Time setting range is 0.5-24hr in
30-minute increments.
6.1.2 Clock Timer
Ti
mer ON:
If
timer ON is set during operation of the unit, the unit will continue to operate. If timer ON is set at unit OFF, upon ON time reaches the
unit will start to operate according to previous setting status.
Ti
mer OFF:
If timer OFF is set at unit OFF, the sy
stem will keep standby status. If timer OFF is set at unit ON, upon OFF time reaches the unit will
stop operation.