Uf" System Is Not Set Yet - Daikin ALTHERMA HT Service Manual

ESIE09-08B
3.62 "UF " System is not Set yet
UF
Remote Control
UF
Display
UF
All models of indoor units
Applicable
All models of outdoor units
Models
Method of
Malfunction
Detection
The malfunction is determined as soon as the abnormality aforementioned is detected through
Malfunction
checking the system for any erroneous connection of unit.
Decision
Conditions
 Improper connection of transmission wiring between indoor-outdoor unit
Supposed
 QA wiring problem
Causes
 Defect of indoor unit PC board
Troubleshooting
Wiring check operation may not be successful if carried out after the outdoor unit has been off
Note:
for more than 12 hours.
Troubleshooting
subcode 6: QA wiring problem.
subcode 10: Transmission problem with outdoor unit.
Be sure to turn off power switch before connect or disconnect
connector, or parts damage may be occured.
Caution
Are
indoor - outdoor
NO
transmission wiring
and QA wiring
normal?
YES
Troubleshooting by Indication on the Remote Controller
After fixing incorrect wiring,
push and hold the RESET
button on the master outdoor
unit PC board for 5 seconds.
The unit will not run for up to
12 minutes.
Replace indoor unit PC board.
(V2830)
207