Pioneer LISAS-B-1403, Service Manual

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Electrical Control Function
Electrical Control System 107
For Ceiling-floor (12-24K), Cassette (12-24K), Concealed Ducted (12-24K)
4
3
High
Low
1
Medium
1.5
For other units:
5.0
4.0
High
Low
2.0
Medium
3.0
1.3.2.4 Evaporator low temperature T2 protection.
For 12K-24K units,
---T2<0
℃
, the compressor will stop and restart when T2
≥
5
℃
.
---0
℃≦
T2<4
℃
, the compressor frequency will be limited and decreased to the lower level every 1 minute till
off.
---4 ℃ ≤T2≤7 ℃ , the compressor will keep the current frequency.
---T2>7
℃
, the compressor frequency will not be limited.
For other units: 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
For 12K-18K Outdoor units :
---55
℃
<T3<60
℃
, the compressor frequency will decrease to the lower level every 3 minutes till F1 and then
runs at F1.If T3<54
℃
, the compressor will keep running at the current frequency.
---T3<52
℃
, the compressor will not limit the frequency and resume to the former frequency.
---T3>60
℃
for 5 seconds, the compressor will stop until T3<52
℃
.
For other units: When T3>65 ℃ for 3 seconds, the compressor will shut off. When T3 ＜ 52,the compressor
will restart.