Pioneer LISAS-B-1403, Service Manual

Page: 115 / 151

Electrical Control Function
Electrical Control System 113
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).
For 12K-24K units:
ΔT=T1-Ts Running mode
ΔT
＞
1
℃
Cooling
-1<ΔT≤1
℃
Fan-only
ΔT≤-1 ℃
Heating
For other units:
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
For 12K-24K units:
1.3.5.1 Indoor fan speed is fixed at low and can’t be changed. The louver angle is the same as in cooling
mode.
1.3.5.2 Low indoor room temperature protection
In drying mode, if room temperature is lower than 10
℃
, the compressor will stop and not resume until room
temperature exceeds 12
℃
.
1.3.5.3 Evaporator anti-freezing protection, condenser high temperature protection and outdoor unit
frequency limit are active and the same as that in cooling mode.
1.3.5.4 The outdoor fan operates the same as in cooling mode.
For other units:
Drying mode works the same as cooling mode in low speed.
All protections are active and the same as that in cooling mode.
1.3.6 Timer function
1.3.6.1 Timing range is 24 hours.
1.3.6.2 Timer on. The machine will turn on automatically when reaching the setting time.
1.3.6.3 Timer off. The machine will turn off automatically when reaching the setting time.