Ua-00" - Wrong User Interface Used; Uc-00" - Duplication Group Number Address - Daikin Modular L Smart Service Manual

ESIE19-06 | Part 2. Troubleshooting
2.2.2.3. "UA-00" – Wrong user interface used
Trigger
Main PCB A1P detects incorrect type
interface.
Possible cause
Incorrect type user interface.
Incorrect combination of user interface.
Faulty user interface.
Faulty main PCB.
External factor (e.g. electrical noise) (error
disappears after power reset, but returns
after a while).
2.2.2.4. "UC-00" – Duplication group number address
Trigger
Main PCB A1P detects multiple HRV units
are set same group number in same F1F2
bus.
Possible cause
Multiple HRV units on the same F1F2 bus
are set same group number.
Faulty user interface.
Faulty main PCB.
External factor (e.g. electrical noise) (error
disappears after power reset, but returns
after a while).
21/01/20 | Version 1.1
Modular L Smart
Effect
Unit will stop operating.
Check
Confirm used user interface is listed in
option list.
Confirm compatibility between types of
user interface.
Check user interface.
Check if the main PCB receives power.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check the wiring to main PCB.
Check voltage P1P2 ±16 VDC.
Check for source which could cause elec-
trical interference.
Effect
Unit keeps operating (only warning).
Check
Check the group number by the user inter-
face on the units indicating UC caution on
the central control device.
Check user interface.
Check if the main PCB receives power.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check the wiring to main PCB.
Check voltage P1P2 ±16 VDC.
Check for source which could cause elec-
trical interference.
2.2. Error based troubleshooting
Reset
Automatic reset (when correct type user
interface is detected).
Corrective action
Replace user interface to type listed in
option list.
Replace user interface(s) to type listed in
option list.
Replace user interface when required.
Adjust power to the main PCB.
Replace main PCB when HAP LED is not
blinking in regular intervals.
Install correct spare part or update main
PCB.
Adjust wiring to main PCB when required.
Avoid electrical interference.
Reset
Power reset (if no more duplication of
group numbers in same F1F2 bus).
Corrective action
Change the group number(s) to have only
unique group numbers.
Replace user interface when required.
Adjust power to the main PCB.
Replace main PCB when HAP LED is not
blinking in regular intervals.
Install correct spare part or update main
PCB.
Adjust wiring to main PCB when required.
Avoid electrical interference.
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