Broken Wire Check Of The Relay Wires - Daikin SkyAir RZR-TA Series Service Manual

Check

5.12 Broken Wire Check of the Relay Wires

CHECK 15
Procedure for checking indoor-outdoor unit transmission wiring for broken wires (for checking the
indoor-outdoor unit transmission wiring of the outdoor unit for broken wires).
Turn OFF the power supply to all equipment, short circuit between the indoor-outdoor unit terminal
F1 and F2 in the outdoor unit, and then conduct continuity checks between the transmission wirings
F1 and F2 of the "Indoor Unit a" that is farthest from the outdoor unit using a multimeter. If there is
continuity between the said transmission wirings, the indoor-outdoor unit transmission wiring has
no broken wires in it.
If there is no continuity, the transmission wiring may have broken wires. With the indoor-outdoor
unit terminal of the outdoor unit short circuited, identify the place with continuity in the transmission
wiring of the "Indoor Unit b", transmission wiring of the "Indoor Unit c", and transmission wiring of
the "Indoor Unit d" in the order described.
If the place with continuity can be identified, there may be broken wires in places before the said
place with continuity.
274
Check the transmission
wiring for continuity.
Indoor-outdoor Unit
If there is continuity, the Transmission Wiring
indoor-outdoor unit
transmission has no
broken wires in it.
SiUS281811E
Short circuit between
the indoor-outdoor unit
terminal parts.
Outdoor
unit
Part 6 Service Diagnosis