Gree GMV-1015WM/G-U, Руководство по обслуживанию

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Gree GMV6 DC Inverter VRF Units Service Manual
109
2.60 "dH" Abnormal Circuit Board of Wired Controller
Fault display:
wired controller of indoor unit and receiver of indoor unit display
Fault diagnosis:
The wired controller's IIC communication is abnormal.
Possible causes:
■ The communication between the wired controller's touch keypad and display panel IIC is abnormal;
■ The wired controller's memory chip IIC cannot be read or written properly (if there are any memory
chips).
Troubleshooting:
No
"dH" Abnormal Circuit
Board of Wired Controller
Install the keypad and
display panel respectively
The IIC may be in poor
contact with related
components due to
moisture, or corrosion, etc.
Yes
Replace the wired
controller
Whether the touch keypad
of the wired controller is well connected
to the display panel?
Yes
2.61 "dC" Abnormal Settings of DIP Switch for Capacity
Fault display:
wired controller of indoor unit and receiver of indoor unit display
Fault diagnosis:
If DIP switch for capacity is set to the wrong position, the fault is generated.
Possible causes:
■ DIP switch for capacity is set to a wrong position;
■ Abnormal detec tion circuit.
Troubleshooting: