SiUS181631EA Troubleshooting with LED
Troubleshooting 179
1.2 Branch Provider (BP) Unit
i
: ON,
h
: OFF,
j
: Blinks, —: No matter
Green : Blinks in normal condition
Red : OFF in normal condition
Note: Turn the power off then on again. If the LED display recurs, the BP unit PCB is defective.
BP Unit LED Indication Description
Green Red
A1234
jhhhh
Normal condition
jihhh
Defective electronic expansion valve or anti-icing control in non-operating
indoor unit
jiihh
Defective thermistor
jihii
Freeze-up protection control in operating indoor unit or standby indoor unit
i
————Defective BP unit PCB (Refer to note.)
h
————Power supply abnormality (Refer to note.)
LEDA (H1P)
LED1 (H2P)
LED2 (H3P)
LED3 (H4P)
LED4 (H5P)
(R19090)
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