Failure Diagnosis At The Moment Of First Installation - Daikin ZQG71~140L7V1B Service Manual

Test Operation
1.5

Failure Diagnosis at the Moment of First Installation

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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).
• 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