EN
UAB KOMFOVENT we reserve the right to make changes without prior notice
MOU_22-10
30
8.6.1. E1 solving step – communication error with outdoor unit
E1 display
Communication malfunction
between indoorand outdoor units
Power off then restart the unit 2
Minutes later
Yes
Yes
No
No
Check whether there are any
interference such as too many
lamps power tranformers? Or the
signal wire Is too long?
Remove interference or add
magnet ring on power wire
Check whether the signal wire
is shield cable or whether the
shield cable is earthing?
Adopt shield cable/shield
cable earthing
Yes
Yes
No
No
No
Yes
Check whether the wire is
correct Polarity? P to P
Q to Q E to E?
comect the connection
Replace the signal wire
pull out and insert back
Check whther the signal
Wire is broken?
Check whether the
signal Wires insert on PCB
well?
Replace indoor main PCB
Is the error distinguished?
Replace the autdoor
main PCB
