Pioneer LISAS-B-1403 Service Manual page 114

Electrical Control Function
Condition of entry defrosting:
time1+ time2≥40 minutes, When defrosting is end,time1 and time2 are cleared.
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 ≥TempQuitDefrost_ADD℃;
③ T3 ≥7℃ for 60seconds.
For 36K units:
Condition of defrosting:
T3≤TempEnterDefrost_ADD ℃ and lasts for 40 minutes.
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 T3 > TempQuitDefrost_ADD ℃;
② The defrosting time achieves 10min.
③ Turn to other modes or off.
Defrosting action：
4-Way valve
Compressor
10S 30S
Indoor fan
Outdoor fan
PMV
1.3.3.5 High evaporator coil temp.T2 protection:
For 12K-24K units:
----T2> TEH2℃, the compressor running frequency decreases to the lower level every 20s.
When the frequency decreases to F2 and the T2 is still over TEH2℃ for 3 minutes, the compressor will
stop.
----T2<48℃ or TEH2℃<T2<48℃ for 6 minutes , the frequency will not be limited.
----T2>60℃, the compressor will stop and restart when T2<48℃.
For other units: T2>60℃, the compressor will stop and restart when T2≤54℃.
112
no longer than 10min
TimeA
480P
10S
PMV running
8 mins with 300P
Electrical Control System