Kaisai SUPER DC INVERTER SERIES, Service Manual

Page: 85 / 127

LFIS-B-1211 Electrical Control Function
Electrical Control System 81
5.0
4.0
High
Low
2.0
Medium
3.0
1.3.2.4 Evaporator low temperature T2 protection.
When T2<2
℃
and lasts for 3 minutes, the indoor has no capacity demand and resume till T2
≥
7
℃
.
1.3.2.5 Condenser high temperature T3 protection
When T3≥65
℃
for 3 seconds, the compressor will shut off. When T3
＜
52,the compressor will restart.
1.3.3 Heating Mode
1.3.2.1 Outdoor PMW open angle control
The unit is working in heating mode with the EXV open 300P for 3 minutes, then adjusting PMW open angle
according to the temperature of compressor discharge every 2 minutes.
1.3.3.2 Outdoor fan running rules:
T4
E DC_FAN_SSLOW_SPD_ADD
D DC_FAN_SLOW_SPD_ADD
C DC_FAN_MIN_SPD_ADD
B DC_FAN_MID_SPD_ADD
A DC_FAN_HI_SPD_ADD
21 ℃
19 ℃
18 ℃
16 ℃
15 ℃
13 ℃
12 ℃
10 ℃
1.3.3.3 Indoor fan running rules:
When the compressor is on, the indoor fan can be set to high/(med)/low/auto. And the anti-cold wind
function has the priority.
Auto fan action: