Gree GMVVQ1015WM/C-X, Service Manual

Page: 194 / 433

Gree GMV6 HR DC Inverter VRF Units Service Manual
192
Yes
Is the terminal between
main board and limit switch loose or
any foreign objects inside?
“Ln” lifting panel return air
frame reset is abnormal
If it is loosened or there
are foreign objects,
retighten it after treatment
The detecting circuit
might be abnormal
No
Replace the main
control board
Replace the limit switch 1 and 2,
is the error disappeared?
No
Yes
2.134 "n0" System Energy Efficiency Running Settings Status
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
This is a status code of a function. It indicates that the unit has entered energy efficiency state. "00"
indicates comfort as priority; "01" indicates energy efficiency as priority, in which case the unit is up to
15% more efficient.
Possible causes: --
Troubleshooting: not required.
2.135 "n2" Settings Status of Maximum Capacity Configuration Rate
for Indoor and Outdoor Units
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
This is a status code of a function. It indicates that the unit has entered settings status of maximum
capacity configuration rate for indoor and outdoor units.
Possible causes: --
Troubleshooting: not required.