Test Operation
1.5
Failure Diagnosis at the Moment of First Installation
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124
In case nothing is displayed on the remote controller (the current set temperature does not
display), check for any of the following abnormalities before you can diagnose possible
malfunction codes.
•
Disconnection or wiring error (between power supply and outdoor unit, between outdoor
unit and indoor units, between indoor unit and remote controller).
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The fuse on the outdoor unit PCB may have run out.
E3
If the malfunction code "
possibility that the stop valves are closed.
E3
If the malfunction code "
possibility that air inlet or air outlet are blocked.
U2
If the malfunction code "
imbalance.
U4
If the malfunction code "
branch wiring connection.
UA
If the malfunction code "
connection is with incompatible indoor unit.
E4
L8
U0
", "
", "
" or "
" is displayed on the remote controller, there is a
E4
L4
L8
", "
", "
" or "
" is displayed on the remote controller, there is a
" is displayed on the remote controller, check for voltage
UF
" or "
" is displayed on the remote controller, check the inter-unit
" is displayed on the remote controller, there is a possibility that
ESIE12-06
Field Setting