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The cause of alarm 'IPM MODULE' could be:
1 The communications between Module and outdoor main circuit board is jamming;
2 Module is jamming and can not detect current or compressor;
3 Module can not start compressor;
4 Module's rated 15VDC voltage is not steady
5 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:
AWA70/90-DC: 380VDC
AWA120150-DC (single phase): 280VDC
AWA120/150-DC (trinal phase): 540VDC
Control
Alarm Messages
40
N
P
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