Malfunction Of Transmission (Between Indoor Unit And Remote Controller) - Daikin Skyair FHC35K Service Manual

Si-71A
6.22

Malfunction of Transmission (Between Indoor Unit and Remote Controller)

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Remote Controller
Display
A(H1P) — ýýý 1(H2P) — 2(H3P) —
LED Display
Applicable Models R(Y)
Method of
Microcomputer checks if transmission between indoor unit and remote controller is normal.
Malfunction
Detection
Malfunction
When transmission is not carried out normally for a certain amount of time
Decision
Conditions
„ Failure of remote controller
Supposed Causes
„ Failure of indoor PC board
„ Outside cause (noise, etc.)
„ Connection of 2 master remote controllers (When using 2 remote controllers)
Troubleshooting
Troubleshooting
Troubleshooting by Remote Controller Display / LED Display
YES
Control by 2 remote
controllers
NO
All indoor
unit PC board
NO
microcomputer
normal monitors
blinking
YES
Using
multicore
transmission wiring YES
between indoor unit
and remote
controller
NO
SS1 of both
YES
remote controllers is
set to "main."
Resets
normally when
NO
power supply is
turned off
temporarily.
YES
Set one of the remote
controllers
to"sub,"turn off the
power supply
temporarily, then
restart operation.
Indoor unit PC board
replacement
Malfunction could be
produced by noise.
Check the
surrounding area and
restart operation.
Change to
double-core
independent cable.
Failure of remote
controller PC board or
replacement of
defective indoor unit
PC board
(SF025)
121