Maintenance And Care; Outdoor Heat Exchanger; Drain Pipe; Notice Before Seasonal Use - Gree Ultra Heat GMV Multi VRF Series Owner's Manual

Status:
Error Code
Unit waiting for debugging
A0
Refrigerant recovery operation of after-sales
A2
A3
A4
Heat pump function setting
A6
A7
A8
AH
AC
Charge refrigerant automatically
AL
Charge refrigerant manually
AE
AF
Cleaning reminding of filter
AJ
Debugging confirmation when starting up
AP
Long-distance emergency stop
AU
Emergency stop of operation
Ab
Ad
An
Note: For detailed malfunction and maintenance, please refer to the engineering debugging and
after-sales maintenance manual.

8 Maintenance and Care

Regular check, Maintenance and care should be performed every six months by professional
personnel, which will prolong the unit life span. Disconnect the power supply before cleaning and
maintenance.

8.1 Outdoor Heat Exchanger

Outdoor heat exchanger is required to be cleaned once every six months. Use vacuum cleaner with
nylon brush to clean up dust and sundries on the surface of heat exchanger. Blow away dust by
compressed air if it is available. Never use water to wash the heat exchanger.

8.2 Drain Pipe

Regularly check if the drain pipe is clogged in order to drain condensate smoothly.

8.3 Notice before Seasonal Use

(1) Check if the inlet/outlet of the indoor/outdoor unit is clogged.
(2) Check if the ground wire is earthed reliably.
(3) Check if battery of remote wireless controller has been replaced.
Content
Defrosting
Oil-return
Quiet mode setting
Vacuum pump mode
Heating
Cooling
Fan
the unit
Limit operation
Child lock status
Error Code
Ay
SE operation setting of system
n0
n3
Limit setting for max. capacity/output
n4
Compulsory excursion of engineering code
n5
n6
n7
Inquiry of project code of IDU
n8
Check quantity of IDU on line
n9
nA
nH
nC
nE
nF
High temperature prevention when heating
nJ
Eliminate the long-distance shielding
nU
nb
Length modification of connection pipe of
nn
58
Ultra Heat GMV Multi VRF
Content
Shielding status
Compulsory defrosting
capacity
of IDU
Inquiry of malfunction
Inquiry of parameters
Heat pump unit
Heating only unit
Cooling only unit
Negsative code
Fan model
command of IDU
Bar code inquiry
ODU