Daikin RTSQ20PY1 Service Manual page 330

Troubleshooting by Indication on the Remote Controller
Troubleshooting
∗
319
A
Check the transmission
wiring between centralized
controller for any broken
wire. For details, refer to
information in the
"Procedure for checking
broken wires" section.
CHECK 7
Normal
Has the master unit
central setting connector
been connected?
YES
Disconnect the transmission wiring
of the master unit centralized
controller, and then check the
voltage between the transmission
terminals (F1 and F2) of the
master unit transmission
equipment using a multiple meter.
Is the voltage
between the terminals
F1 (+) and F2 (-) in
the range of 15.2 to
17.6 VDC?
YES
Check 7 : Referring to the information on P.344.
CHECK 7
Abnormal
NO
NO
SiBE31-801_C
Correct the wiring.
Correct the connection of the
connector.
Replace the central
equipment.
Centralized controller: Normal
It is supposed that the
malfunction results from
external factors (e.g. noises)
from other equipment.
Troubleshooting