Daikin SkyAir RZR-P Series Service Manual page 113

SiUS281117
Error code
U0 - 02 Gas shortage - Outdoor unit (Factor 0)
U0 - 03 Gas shortage - Outdoor unit (Factor 1)
U0 - 04 Gas shortage - Outdoor unit (Factor 2)
U2 - 01 Power supply voltage error
U2 - 02 Open phase of power supply
U2 - 03 Main circuit capacitor charge error
U2 - 04 SP/MP - PAM overvoltage error
UA - 01 Incorrect number of indoor units connected
UA - 02 Multiple master units detected
UA - 03 Excess indoor units connected
UA - 05 Indoor-Outdoor transmission error between
slave 1 and outdoor unit
UA - 07 Indoor-Outdoor transmission error between
slave 2 and outdoor unit
UA - 09 Indoor-Outdoor transmission error between
slave 3 and outdoor unit
UF - 01 Incorrect wiring
UF - 02 Piping connected the other way round
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Description of error
Troubleshooting by Remote Controller
Troubleshooting
Description of diagnosis
This error results from a shortage of refrigerant. Refer to the
"U0" Troubleshooting flow chart and make a diagnosis, and
then take countermeasures.
This error results from a shortage of refrigerant cause by gas
leakage. Charge refrigerant up to the normal refrigerant
amount.
This error results from clogging caused somewhere in the
refrigerant piping system. Check for a failure to open the stop
valve and clogging in the refrigerant system.
This error is supposed to have resulted from under- or over-
voltage of the power supply, or faulty voltage sensor in the
PCB.
Check for any open phase of the power supply.
There is abnormal circuit current flowing in the PCB. If wire
connections related to the PCB are normal, replace the
outdoor unit PCB.
There is overvoltage between SP/MP and PAM (Single
phase). If wire connections related to the PCB are normal,
replace the outdoor unit PCB.
This error will be displayed if the locally-set number of indoor
units is different from the detected number of indoor unit.
There are a number of indoor units with a remote controller
connected.
Connect the remote controller to only one indoor unit.
This error will be displayed if five or more indoor units are
connected.
There is an error in transmission between the outdoor unit
and slave indoor unit 1. Check for the connection of the
jumper between the slave indoor unit (with no remote
controller connected) and the outdoor unit.
There is an error in transmission between the outdoor unit
and slave indoor unit 2. Check for the connection of the
jumper between the slave indoor unit (with no remote
controller connected) and the outdoor unit.
There is an error in transmission between the outdoor unit
and slave indoor unit 3. Check for the connection of the
jumper between the slave indoor unit (with no remote
controller connected) and the outdoor unit.
There is an error in wire connections for transmission
between indoor and outdoor units (judged with the indoor
unit). Check for the connections of jumpers 1, 2, and 3
between the indoor and outdoor units.
There is an error in operation mode and refrigerant piping
detection temperature. Check for any refrigerant piping
connected the other way round, shortage of refrigerant, etc.
Service Diagnosis