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Error
Code
Description
222 Overcooling inlet sensor error (overcooling inlet sensor of HR Unit6 open/short)
223 Overcooling outlet sensor error (overcooling outlet sensor of HR unit6 open/short)
224 Communication error (no outdoor unit signal for 3 min from HR unit6)
225 Fluid pipe sensor error (fluid pipe sensor of HR Unit7 open/short)
226 Overcooling inlet sensor error (overcooling inlet sensor of HR Unit7 open/short)
227 Overcooling outlet sensor error (overcooling outlet sensor of HR unit7 open/short)
228 Communication error (no outdoor unit signal for 3 min from HR unit7)
229 Fluid pipe sensor error (fluid pipe sensor of HR Unit8 open/short)
230 Overcooling inlet sensor error (overcooling inlet sensor of HR Unit 8 open/short)
231 Overcooling outlet sensor error (overcooling outlet sensor of HR unit8 open/short)
232 Communication error (no outdoor unit signal for 3 min from HR unit8)
233 Fluid pipe sensor error (fluid pipe sensor of HR Unit9 open/short)
234 Overcooling inlet sensor error (overcooling inlet sensor of HR Unit9 open/short)
235 Overcooling outlet sensor error (overcooling outlet sensor of HR unit9 open/short)
236 Communication error (no outdoor unit signal for 3 min from HR unit9)
Central Controller Errors
Error
Code
Description
240
Communication error (PC central controller I-GW)
242
Communication error (central controller indoor unit)
246 Data in time out error from central controller
247
Communication error (ACM Client ACM Server)
248
Communication error (ACP Client ACP Server)
250 Checksum error
251 Communication error (AC Smart to 128-room expansion kit)
150


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