Gree GRH120DB-K6NA1A User Manual

36
Installation and Maintenance
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Start
The AP1 voltage
detection circuit
is at fault
Did the equipment operate
normally before the failure
occurs?
outdoor units
Are wires broken?
Check wiring inside
of the indoor and
If the fault is eliminated?
Check the communication
circuit of the outdoor unit
The communication
circuit is abnormal
If the fault is eliminated?
End
Replace the main board
of
the indoor unit
If the fault is eliminated?
Is the connection right?
Replace the main board
AP1of the outdoor unit
wiring diagram
Check the wiring of the indoor and
outdoor units with reference to the
Correctly connect the
corresponding wires for
the indoor and outdoor
units with reference to
the wiring diagram
7. Communication malfunction E6

Gree GRH120DB-K6NA1A Specifications

General

Brand	Gree
Model	GRH120DB-K6NA1A
Category	Air Conditioner
Language	English