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Daikin VRV IV-S RXTQ36TAVJU User Manual

Daikin VRV IV-S RXTQ36TAVJU
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SiUS331604E Troubleshooting by Error Code
Service Diagnosis 206
4.48 System not Set
Error Code UF
Applicable
Models
All indoor units
Method of Error
Detection
On check operation, the number of indoor units in terms of transmission is not corresponding to that
of indoor units that have made changes in temperature.
Error Decision
Conditions
The error is determined as soon as the abnormality aforementioned is detected through checking
the system for any erroneous connection of units on the check operation.
Supposed
Causes
Improper connection of transmission wiring between indoor-outdoor units and outdoor-outdoor
units
Failure to execute check operation
Defective indoor unit PCB
Stop valve is not opened
Troubleshooting
Caution
Is indoor-
outdoor and outdoor-
outdoor unit transmission
wiring normal?
Is indoor
- outdoor and
outdoor - outdoor unit
transmission wiring
normal?
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Press BS3 on outdoor unit
PCB for 5 seconds or longer.
No operation for max. 12
minutes.
After fixing incorrect wiring,
press and hold the BS3
button on the master outdoor
unit PCB for 5 seconds.
The unit will not run for up to
12 minutes.
YES
YES
NO
YES
NO
NO
NO
YES
Is the check
operation carried
out?
Open stop valve.
Replace the indoor unit PCB.
Normal
YES
NO
Are the stop valves
opened?
Are there any other
errors?
Perform test operation again
and press BS3.

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Daikin VRV IV-S RXTQ36TAVJU Specifications

General IconGeneral
BrandDaikin
ModelVRV IV-S RXTQ36TAVJU
CategoryHeat Pump
LanguageEnglish

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