Daikin ERQ, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller ESIE09-05
214 Troubleshooting
3.42 “
U5
” Malfunction of Transmission between Remote
Controller and AHU
Remote
Controller
Display
U5
Applicable
Models
AII AHU models
Method of
Malfunction
Detection
In case of controlling with 2-remote controller, check the system using microcomputer is signal
transmission between AHU and remote controller (main and sub) is normal.
Malfunction
Decision
Conditions Normal transmission does not continue for specified period.
Supposed
Causes
„ Malfunction of AHU remote controller transmission
„ Connection of two main remote controllers (when using 2 remote controllers)
„ Defect of AHU PC board
„ Defect of remote controller PC board
„ Malfunction of transmission caused by noise
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2823)
NO
YES
YES
NO
Replace AHU PC board.
Set one remote controller to
"SUB"; turn the power supply
off once and then back on.
There is possibility of
malfunction caused by noise.
Check the surrounding area
and turn on again.
NO NO
Using
2-remote controllers
control.
All indoor
PC board microcomputer
monitors blink.
YES
Multi-core
cableis used for the
indoor unit remote controller
transmission
wiring.
Operation
returns to normal when
the power is turned off
momentarily.
YES YES
SS1 of
both remote controllers
is set to "MAIN."
NO
Switch to double-core
independent cable.
replacement
Defect of remote controller PC
board or AHU PC board.
Replace whichever is
defective.
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