Gree GRS-S16/Na-M, Service Manual

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HEAT PUMP WATER HEATER (NORTHERN EUROPE) MAINTENANCE
30
C om m unication M alfunction EC
Check if the com m unication
line of the unit is connected
M easure if the Com m unication
line is through
C heck if the outdoor unit
is electrically pow ered
R eplace the com m unication line
N O
Y ES
N O
Y ES
N O
Y ES
N O
Check if the com m unication line
of the unit is connected correctly
Check the orientation
of plug and socket
Check the orientation
of plug and socke
t
Please supply pow er
to the outdoor unit