P12 RS, SS accuracy check | EIS, EOS accuracy check


Content Alarm code Conclusion Possible cause Check method
RS, SS accuracy
check		 J121 Excessively large
temperature
difference between
RS and DRS
Excessively large
temperature
difference between
SS and DSS		 SS malfunction Compare the SS with
DSS on the control
panel.


Excessively large
temperature
difference between
RS and DRS
Excessively large
temperature
difference between
SS and DSS		 RS malfunction Compare the RS with the
DRS(optional) on the
control panel. Without DRS,
compares RS with SS
EIS, EOS accuracy
check		 Same as
normal
operation		 Compare the EIS,
EOS with SS		 EIS, EOS malfunction Compare the EIS, EOS
with SS
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