Daikin FHK35FJV1 [130/244] 8 7 8 7 8 7

Daikin FHK35FJV1 [130/244] 8 7 8 7 8 7
Si-71A Troubleshooting by Remote Controller Display / LED Display
Troubleshooting 119
6.21 Malfunction of Transmission (Between Indoor and Outdoor Unit)
Remote Controller
Display
87
8787
87
LED Display
A(H1P) —
ýýý
1(H2P) — 2(H3P) —
Applicable Models
R(Y)
Method of
Malfunction
Detection
Microcomputer checks if transmission between indoor and outdoor units is normal.
Malfunction
Decision
Conditions
When transmission is not carried out normally for a certain amount of time
Supposed Causes
Wiring indoor-outdoor transmission wire is incorrect.
Failure of indoor unit PC board
Failure of outdoor unit PC board
Outside cause (noise, etc.)
Troubleshooting 1
Diagnosis of incorrect or broken/disconnected wiring
If the LEDs on the indoor unit PC board are off, it indicates that the transmission wiring between indoor and
outdoor units may be incorrect or broken/disconnected.
Does
outdoor unit
microcomputer
normal H1P
blink?
Is indoor-
outdoor
transmission
wire wired
correctly?
Is H1P blinking?
NO
YES
NO
NO
NO
NO (ON or OFF)
NO(OFF)
YES
YES
YES
Is H1P blinking?
Is H2P blinking?
To outdoor unit
(next page)
Is H2P on?
Check of
indoor unit
microcom-
puter
normal
H1P
Check of
indoor unit
transmission
malfunction
LED B
YES
YES
Turn the power
supply off once and
then back on.
Failure of indoor unit PC board or
malfunction of power supply system
Resets normally.
Could be outside
cause (noise, etc.).
Failure of indoor unit PC board.
Wire correctly.
Failure of indoor unit PC board.
(SF023)

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