Daikin ERQ Series, Service Manual

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Test Operation ESiEN09-06 A
112 Test Operation
1.3 Operation When Power is Turned On
1.3.1 When Turning On Power First Time
The unit cannot be run for up to 12 minutes to automatically set the master power and address.
Status
1.3.2 When Turning On Power The Second Time and Subsequent
Tap the RESET button on the outdoor unit PC board. Operation becomes possible for about 2
minutes. If you do not push the RESET button, the unit cannot be run for up to 10 minutes to
automatically set master power.
Status
1.3.3 When an AHU or Outdoor unit Has Been Added, or AHU or Outdoor
Unit PC Board Has Been Changed
Be sure to push and hold the RESET button for 5 seconds. If not, the addition cannot be
recognized. In this case, the unit cannot be run for up to 12 minutes to automatically set the
address.
Status
Outdoor unit Test lamp H2P .... Blinks
Can also be set during operation described above.
AHU If ON button is pushed during operation described above, the "UH"
malfunction indicator blinks.
(Returns to normal when automatic setting is complete.)
Outdoor unit Test lamp H2P .... Blinks
Can also be set during operation described above.
AHU If ON button is pushed during operation described above, the operation lamp
lights but the compressor does not operate. (Returns to normal when
automatic setting is complete.)
Outdoor unit Test lamp H2P .... ON
Can also be set during operation described above.
AHU If ON button is pushed during operation described above, the "UH" or "U4"
malfunction indicator blinks. (Returns to normal when automatic setting is
complete.)
Switch box cover
Service cover
[Service Precautions] label
Switch box
(the upper right)
Caution When the 400 volt power supply is applyed to "N" phase by mistake,
replace Inverter P.C.B (A2P) and control transformer (T1R, T2R) in
switch box together.
(V0847)