GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
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Make sure the IDUs connected with one wired controller belong to the same series.
2.2.4.105
“LC” Mismatch of IDU and ODU models
Error display:
IDU wired controller and IDU receive light board will display
Error judgment condition and method:
When some IDUs or devices which cannot be identified by some ODUs are installed in the system,
mismatch error of IDU and ODU models will occur.
Possible reason
：
■Mismatch of IDU and ODU
Troubleshooting:
When some IDUs or devices which cannot be identified by some ODUs are installed in the system
(E.g. floor heating device is installed in modular DC inverter multiple VRF system), the error will occur.
Please remove the relevant IDU devices or replace the ODU with suitable model.
2.2.4.106
“n0” System energy-saving operation setting status
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
This code is function setting status code, which indicates that the system has entered energy-saving
setting status.
“00” is the control with priority of comfort; “01” is the control with priority of energy savings,
in which energy savings can reach 15%.
Possible reason
：——
Troubleshooting:
status code, no troubleshooting.
2.2.4.107
“n2” Upper limit setting status of IDU&ODU capacity configuration ratio
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
This code is function setting status code, which indicates that the system has entered upper limit
setting status of IDU&ODU capacity configuration ratio.
Possible reason
：——
Troubleshooting:
status code, no troubleshooting.
2.2.4.108
“n4” Limit setting status of max output capacity
Error display:
ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
