Daikin Sky Air FAA71BUV1B Service Manual page 23

FAA71+100BUV1B
Sky Air indoor units
ESIE22-01 – 2022.02
Starting conditions
In case the customer strongly needs the heating/cooling operation while waiting
for the next service visit, you can manually operate the system by changing the
emergency switch on the indoor unit and outdoor unit PCB from "normal" to
"emergency". When emergency operation is active, the system CANNOT control
the room temperature.
Both the indoor and outdoor unit MUST be set to "emergency" while the power is
OFF.
Ending conditions
You can end the emergency operation by changing the emergency switch on the
indoor unit and outdoor unit PCB back to "normal" while the power is OFF.
Below table explains what will happen when the emergency switch is set to
"emergency":
Changing the emergency switch on
the...
Indoor unit
Outdoor unit
Activate emergency operation
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Set the emergency switch SS1 on the indoor unit PCB to the "Emg." position.
SS1
Norm. Emg.
Norm. Normal
Emg. Emergency
2 Set the emergency DIP switch on the outdoor unit PCB to the "emergency"
position, see outdoor unit service manual for more information.
3 Set the emergency DIP switch on the outdoor unit PCB to the desired forced
operating mode (Cooling or Heating).
4 Turn ON the power using the respective circuit breaker.
5 Turn ON the unit.
Result: The system starts operating in emergency operation.
Active components
Component Forced cooling
Compressor ON
4‑way valve OFF
Outdoor unit fan Steady‑state
control
Indoor unit fan Steady‑state
control
3 Troubleshooting
|
Switches ON the...
▪ Indoor unit fan
▪ Drain pump
▪ Compressor
▪ Outdoor unit fan
"4.6 Plate work" [
Forced heating Forced defrost
ON ON
ON OFF
Steady‑state OFF
control
Steady‑state OFF
control
4
60].
Service manual
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