GREE Duct type Ducted Type Split Air-Conditioner Units
113
(56) “U2” wrong setting of capacity dial code/jumper cap of outdoor unit
Error display: ODU mainboard and IDU display .
Applicable model: all ODUs.
Condition and method for fault judgement:Inconsistency between the capacity dial code
detected by ODU mainboard and actual capacity of unit.Inconsistency between the jumper cap value
detected by ODU mainboard and actual jumper cap value of unit.
Possible causes:
1) Wrong capacity dial code or wrong jumper cap (some models are without juper cap).
2) Dial code switch or jumper cap is damaged.
3) Detecting circuit is faulted.
Troubleshooting:
“U2” wrong setting of
capacity dial code/jumper
cap of ODU
The detecting circuit is
probably faulted.
Yes
Check if the capacity
dial code and jumper cap of mainboard
are in consistent with that of the
actual unit?
No
Replace the main control
board.
No
After cutting off the power
supply, redial the code or
replace the correct jumper cap,
and then re-energize the unit.
(57) “U6” alarm due to abnormal valve
Error display: ODU mainboard and IDU display .
Applicable model: all models.
Condition and method for fault judgement:During debugging, detect the system parameters via
pressure senser to estimate if the the cut-off valve of ODU is open; if the parameters are abnormal, it will
prompt to check to open the cut-off valve again, after it is checked, press SW5 to enter to the next step.
Possible cause:
1) Cut-off vale of ODU is not opened.
Troubleshooting:
1) Recheck and open the cut-off valve of ODU.
(58) Setting for indoor unit and oudoor unit is succeeded
Error display:ODU mainboard and IDU display .
Applicable model: all models.
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