Hitachi RAS-5HVRNM1E Service Manual page 296

8 Troubleshooting
In this case, the stoppage cause is d1-06 and the alarm code "03" may be displayed.
• In the system "20" will be indicated at the difference between indoor units.
N O T E
• If a transmission error continues for three minutes, one is added to the occurrence counter.
• The memorized data can be cancelled by the method which is explained in section 8.3.1 "Self-checking
Procedure of PCB by means of the Remote Control Switch".
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SMGB0060 rev. 1- 12/2010