TROUBLESHOOTING
As shown in wiring diagram, different LED lights show different status or
errors. H1P indicates network traffic, H2P shows network status and HAP
brinks means CPU is working.
The following fault code will be displayed on the thermostat. Also, the
STATUS LED [H2P] on the circuit board blinks. Repair according to the
details of the error.
For the other fault codes, refer to the Installation and operation manuals
of the outdoor unit and indoor unit.
ClimateTalk
Fault Code
STATUS LED [H2P]
on interface adapter
Error message
on Daikin
One
+
Smart Thermostat
Probable Causes
Corrective Actions
D2
6
6 Flashes
Abnormal
combination
•
Abnormal system
combination
(Connection with non-
applicable units)
•
Check the availability of
the combination of indoor
unit and outdoor unit.
•
Check the non-
communicating gas furnace
76
4
4 Flashes
Equipment
communication
error during
operation
•
Communication wiring
with indoor unit has loose
connection.
•
Communication wiring with
outdoor unit has loose
connection.
•
Check communication
wiring with indoor unit
•
Check communication
wiring with outdoor unit
77
3
3 Flashes
Thermostat
communication
error
•
Communication error
between thermostat and
interface adapter.
•
Check communication
wiring with thermostat
78
5
5 Flashes
Equipment
communication
error during
start up
•
No communication with
outdoor unit. (Not detected
outdoor unit.)
•
Check communication
wiring with outdoor unit
When the gas furnace shows any abnormal condition, refer to relevant
manual for the gas furnace.
Check the installation restrictions of each unit.
The latest Installation Manual can be obtained from the website “DAIKIN CITY
(Installation Manual/Unitary Split System)” or “PartnerLink (Info-FinderPlus/
Literature)”.
[DAIKIN CITY URL]
https://www.daikincity.com/Library/
[PartnerLink URL]
https://partnerlinkmarketing.goodmanmfg.com/goodman/info-finder-plus
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English
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