ESIE19-06
|
Part 2. Troubleshooting
2.2. Error based troubleshooting
Page 28
21/01/20
|
Version 1.1
Modular L Smart
2.2.2. System
2.2.2.1. “U5-00” – Transmission user interface PCB abnormality
2.2.2.2. “U8-00” – Main-Sub control error
Trigger
Effect
Reset
Main PCB A1P detects abnormal/missing
transmission to user interface for a certain
time.
Unit will stop operating.
Automatic reset.
Possible cause
Check
Corrective action
Faulty main PCB.
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.
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.
Faulty user interface.
Check user interface.
Replace user interface when required.
User interface is not detected anymore
since power was connected.
Check the wiring between main PCB and
user interface.
When user interface is required, (re-) con-
nect user interface to main PCB terminals
P1P2.
When user interface is not further
required, reset power of HRV unit.
External factor (e.g. electrical noise) (error
disappears after power reset, but returns
after a while).
Check for source which could cause elec-
trical interference.
Avoid electrical interference.
Trigger
Effect
Reset
Main PCB A1P detects abnormal/missing
transmission to dual interfaces.
Unit will stop operating.
Power reset.
Possible cause
Check
Corrective action
Combination of 1 or 2 user interfaces
does not correspond to the Main-Sub set-
ting on the interfaces.
Check the setting of the Main and Sub
control setting.
Check wiring P1P2 between main PCB
and interface(s).
Check voltage P1P2 ±16 VDC.
When only 1 interface is connected,
ensure set to "Main".
When 2 user interfaces are connected,
ensure 1st user interface set to "Main",
2nd user interface set to "Sub".
Faulty user interface.
Check user interface.
Replace user interface when required.
Faulty main PCB.
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.
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.
Faulty user interface.
Check user interface.
Replace user interface when required.
External factor (e.g. electrical noise) (error
disappears after power reset, but returns
after a while).
Check for source which could cause elec-
trical interference.
Avoid electrical interference.
Summary of Contents for Modular L Smart
Page 1: ...Service Manual Modular L Smart ESIE19 06 ...
Page 6: ...ESIE19 06 Page 6 21 01 20 Version 1 1 Modular L Smart ...
Page 16: ...ESIE19 06 Part 1 Introduction 1 4 How to use Page 16 21 01 20 Version 1 1 Modular L Smart ...
Page 59: ...ESIE19 06 Part 4 Maintenance 4 1 HRV unit 21 01 20 Version 1 1 Page 59 Modular L Smart ...
Page 60: ...ESIE19 06 Part 4 Maintenance 4 1 HRV unit Page 60 21 01 20 Version 1 1 Modular L Smart ...