Daikin Altherma HT Service Manual

Troubleshooting by Indication on the Remote Controller ESIE09-08B
206 Troubleshooting
3.61 “UA ” Communication Error between Outdoor Unit and
Indoor Unit
Remote Control
Display
UA
UA
subcode 13
UA subcode 39
Applicable
Models
AII indoor unit models
All outdoor unit models
Method of
Malfunction
Detection
Malfunction
Deci
sion
Conditions
Supposed
Causes
 Excess of connected indoor units
 Defect of outdoor unit PC board (A1P)
 Mismatching of the type of indoor and outdoor unit.
 Setting of outdoor PC board was not conducted after replacing to spare parts PC board.
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect
connector, or parts damage may be occured.
(V3169)
Normal
NO
Push and hold the RESET
button on the outdoor unit
PC board for 5 seconds.
Is the
outdoor PC board
replaced to spare parts
PC board?
YES
The outdoor PC board replaced is
wrong, check PC board type.
NO
YES
Does a
malfunction
occur?
Replace outdoor unit PC board
(A1P).
Matches the type of indoor and
outdoor unit.
NO
YES
Does the type
of indoor and outdoor unit
match?

Daikin Altherma HT Specifications

General

Type	Air-to-water heat pump
Refrigerant	R-410A
Water Outlet Temperature	Up to 80°C
Operating Temperature Range	-20°C to 35°C
Power Supply	3-phase, 400V
Energy Efficiency Class (Heating)	A++