Troubleshooting with LED
SiUS092230EA
114
Part 6 Service Diagnosis
Caution
FDMQ Series with BRC082A43 Wireless Remote Controller
In case of wireless remote controller, a receiver is installed. When the error occurs, the operation
lamp on the receiver blinks.
R4003517
FFQ Series with BRC082A41W, BRC082A42W(S) Wireless Remote Controller
In case of wireless remote controller, a transmitter board (A2P) and a receiver (A3P) are installed
on indoor unit. When the error occurs, the operation lamp on the receiver (A3P) blinks.
R4003518
When operation stops suddenly and the operation lamp blinks, it could be operation mode conflict.
For FFQ models, even if the operation mode conflict occurs, the operation lamp does not blink.
1. Check if the operation modes are all the same for the indoor units connected to multi system
outdoor unit.
2. If not, set all the indoor units to the same operation mode and confirm that the operation lamp is
not blinking.
3. Moreover, when the operation mode is automatic, set all the indoor unit operation mode as
cooling or heating and check again if the operation lamp is normal.
If the lamp stops blinking after the above steps, there is no malfunction.
Operation stops and operation lamp blinks only for the indoor unit that has a different operation
mode set later. The first set operation mode has priority.
Service Monitor
The indoor unit has a green LED (LED A, HAP) on the control PCB. When the microcomputer
works in order, the LED blinks. (Refer to page 25, 27, 29 for the location of LED.)
Operation lamp
(red)
Operation lamp
(red)
Summary of Contents for RX-W Series
Page 1: ... Applied Models Inverter Pair Heat Pump Service Manual SiUS092230EA Inverter Pair RX W Series ...
Page 207: ...SiUS092230EA Check Part 6 Service Diagnosis 201 15 18 24 class R25105 1 2 3 4 Multimeter ...
Page 209: ...SiUS092230EA Check Part 6 Service Diagnosis 203 15 18 24 class R20704 W V U DC_P1 DC_N1 ...
Page 239: ...SiUS092230EA Piping Diagrams Part 8 Appendix 233 RX24WMVJU9 3D141502 ...