Daikin Sky Air Advance RZA200D7Y1B Service Manual page 17

RZA200+250D7Y1B
Sky Air Advance-series
ESIE19-13A – 2020.05
If...
Remote controller is defective
Indoor unit PCB is defective
Outdoor unit PCB is defective
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 on the indoor unit PCB to the "emergency" position,
see indoor unit service manual for more information.
2 Set the emergency DIP switch DS1‑1 on the outdoor unit PCB to the "ON"
position.
EMERGENCY EMERGENCY
ON COOL
a b
OFF HEAT
a DS1‑1
b DS1‑2
EMERGENCY Emergency
ON On
OFF Off
Then...
Emergency operation can be used to go
to cooling or heating. In emergency
operation, the compressor is forced to
operate until the defective indoor or
outdoor unit PCB is back online.
Switches ON the...
▪ Indoor unit fan
▪ Drain pump
▪ Compressor
▪ Outdoor unit fan
ON COOL
a b
OFF HEAT
2 Troubleshooting
|
4
"3.12 Plate work" [ 111].
Service manual
17