Alarm Messages
The cause of alarm ‘IPM MODULE’ could be:
1
ǃ
The communications between Module and outdoor main circuit board is jamming;
2
ǃ
Module is jamming and can not detect current or compressor;
3
ǃ
Module can not start compressor;
4
ǃ
Module’s rated 15VDC voltage is not steady
5
ǃ
Module’s current overload
˗
How to do:
1. Please check if all terminals connections among circuit boards were good, whether some of the wire
damaged;
2. Please check if the compressor wire connection loose (on the top of compressor);
3. Please measure each two of the connections (on the top of compressor)’s resistance, if the resistance are
always the same, means the compressor is fine.
there 3 connections on the top of compressor , you need
to measure each two 's resistance, for example , let 's say the connections are A, B, C, then you need to
measure the resistance of AB, AC, BC;
4. please check wire connection between the outdoor circuit board and module; see the follow picture
5. Check the DC voltage between terminal P and N if normal, the DC voltage should be:
BWB-SS-7 / 9 DC: 380VDC
BWB-SS-12 / 15 DC:(trinal phase): 540VDC
P
N
Control
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