Daikin VAM 350GJVE, Руководство по обслуживанию, Страница: 59 / 112

Troubleshooting Si71-502
50 Troubleshooting
1.15 Dedicated LCD Remote Controller
When no indication is displayed on remote controller
Error Detection
Method Check to see if remote controller displays indication.
Error Generating
Conditions
Possible Causes
Troubleshooting
Check 1, 2, 3 : Refer to page 51
Disconnect remote
controller cable from
both main unit
terminal board and
remote controller
terminal board.
Using tester, check
continuity between
two wires in cable.
Is
measured
value
∞
M
Ω
(infinity)?
NO
YES
With remote
controller cable
disconnected from
main unit PCB, check
voltage between P1
and P2 on main unit
terminal board.
Is
measured
value approx. 16
VDC?
NO
YES
Connect remote
controller cable to
main unit PCB, and
disconnect remote
controller. Check
voltage at the end of
cable on remote
control side.
Is
measured
value approx. 16
VDC?
NO
YES
There may be shorting in
remote controller cable.
Main unit PCB may be
faulty.
There may be open circuit
in remote controller cable.
Remote control PCB may
be faulty.
(HF014)
Check 1
Check 2
Check 3