Gree GMV-1015WM/G-U, Service Manual

Page: 116 / 331

Gree GMV6 DC Inverter VRF Units Service Manual
114
Troubleshooting:
Yes
“dd” solar energy temperature
sensor error
If it is loosened or there are
foreign objects, retighten it
after treatment
Detecting circuit might
be abnormal
Yes
Replace the main control
board of hydro box
No
Replace the
temperature sensor directly,
is the error disappeared?
Is the terminal between
main board and solar energy water
temperature sensor loose or any foreign
objects inside?
No
2.70 “dn” Swing assy error
Error display:
display in the monitor software only
Applicable model: Multi VRF indoor unit with swing assy
Error judgment condition and method:
Report alarm through judging the status of limit switch 1 and 2, When the swing structure is faulted, the indoor
unit will not stop, the display board does not display error code (the error will only be embodied in CAN
communication data)
Possible reasons:
■ Poor contact between limit switch and terminal in main board interface
■ Detecting circuit is abnormal
Troubleshooting:
Yes
“dn” swing assy error
If it is loosened or there are
foreign objects, retighten it
after treatment
Detecting circuit might
be abnormal
Yes
Replace the main control
board
No
Replace the limit switch 1
and 2, is the error disappeared?
Check the terminal between
main board and limit switch to see if it is
loose or any foreign objects
inside?
No