Daikin FTX25JVEA9 Service Manual page 310

Si18-201
3.3.32 System Malfunction
UH
Outdoor Unit
Indication
Method of Case where other BP or indoor unit connected with other BP malfunctioned
Malfunction
This malfunction means that displayed only on indoor unit connected with normal BP.
Detection
"
Malfunction When the system shut down due to malfunction of BP of other systems.
Decision
Conditions
"
Supposed
"
Causes
"
"
Troubleshooting
Service Diagnosis
Outdoor unit displays malfunction code of faulty BP.
Outdoor unit is not malfunctioning.
Transmission error by other system's BP and outdoor unit
Malfunction of other system's thermistor
Other system's BP malfunction including faulty motorized valve of other system's BP, etc.
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check malfunction code of
outdoor unit
Check BP where malfunction
is generated.
Troubleshooting - Outdoor Unit Related
Diagnose faulty BP using
malfunction causes.
(MF052)
297