Troubleshooting by Remote Controller Si20-701_B
447
3.105
UF
Mis-connection of Field
Wiring
Remote Controller Display
UF
Applicable Models
Cooling Only model
R-FU
Method of Error Detection
Judgement by circuit of the PCB to detect wrong wiring.
Supposed Causes
îš„ Power supply wiring is broken or disconnected.
îš„ Mis-connection of field wiring
Troubleshooting
Turn OFF the power
supply and turn the
power ON.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Is "UF"
displayed on the
remote controller?
NO
External factor
(Noise, etc.)
YES
Connect field
wiring exactly.
To Next Page
Loading...
Need help?
General
