Concept Of Inverter-Related Error Codes - Daikin VRV S RXQ4/5ARV1 Service Manual

SiAF332111E

6.10 Concept of Inverter-Related Error Codes

CHECK 10
Power supply
(1 phase, 220-240 VAC)
(3 phase, 380 VAC)
U 2 P 1
Imbalanced power supply voltage
When imbalance in
voltages among
phases comes to 2%
or more
Power supply voltage error
When the power supply
voltage falls out of the range
of 220-240 VAC ± 10%
or 380 VAC ± 3%
Model
RXQ4AR
RXQ5AR
RXMQ10/12AR
Part 6 Service Diagnosis
LC
Low voltage
part
High voltage part
(Power
transmission etc.)
L1 P4
Radiation fin temperature rise
Defective radiation fin thermistor
When the radiation fin thermistor resistor detects
an open circuit (–30˚C or less) or a short
circuit (120˚C or more)
Defective radiation inverter
When the radiation heavy current part of
inverter gets defective (gives no output)
A (A) B (A)
36.9 17.0
51.5 31.0
59.1 33.5
Outdoor
main
PCB
L5 L8
L4 P J
PCB mismatching
When incorrect inverter
PCB is connected
When the radiation fin
temperature reached
D (˚C) or more
C (A) D (°C)
14.8 92
24.1 85
27.6 87
Transmission error
When transmissions between the
main PCB and the inverter PCB
are not normal
Instantaneous overcurrent of compressor
(When inverter output current exceeds A
(A) even instantaneously)
Overcurrent of compressor
(1) A current of B (A) or more
continues for a period of
consecutive 5 seconds.
(2) A current of C (A) or more
continues for a period of
consecutive 260 seconds.
E 5 L 9
Defective startup of compressor
(Compressor stops running
immediately after it starts up.)
Compressor lock (Compressor
does not run at all.)
Check
349