Kaisai SUPER DC INVERTER SERIES, Service Manual, Page: 88 / 127

Electrical Control Function LFIS-B-1211
84 Electrical Control System
4-Way valve
Indoor fan
Outdoor fan
480P
PMV
PMV running
8 mins with 300P
Compressor
10S 30S
TimeA
10S
no longer than 10min
Condition of ending defrosting:
If any one of following items is satisfied, defrosting will stop and the machine will turn to normal heating
mode.
①
The defrosting time achieves 10min;
②
T3
≥
15
℃
;
③
T3
≥
7
℃
for 60seconds.
1.3.3.5 High evaporator coil temp.T2 protection:
T2>60
℃
, the compressor will stop and restart when T2<54
℃
.
1.3.4 Auto-mode
This mode can be chosen with remote controller and the setting temperature can be changed between
17~30
℃
.
In auto mode, the machine will choose cooling, heating or fan-
only mode according to ΔT (ΔT =T1-Ts).
ΔT=T1-Ts
Running mode
ΔT
≥
2
℃
Cooling
-1
≤ΔT<2
℃
Fan-only
ΔT<-1
℃ Heating
Indoor fan will run at auto fan of the relevant mode.
The louver operates same as in relevant mode.
If the machine switches mode between heating and cooling, the compressor will keep stopping for 15
minutes and then choose mode according to T1-Ts.
If the setting temperature is modified, the machine will choose running function again.
1.3.5 Drying mode
Drying mode works the same as cooling mode in low speed.
All protections are active and the same as that in cooling mode.