Hrv Unit; 6A" - Damper Motor Malfunction; 60" - External Protection Device Activated - Daikin Modular L Smart Service Manual

ESIE19-06 | Part 2. Troubleshooting

2.2.1. HRV unit

2.2.1.1. "6A" – Damper motor malfunction
Trigger
The limit switch of the damper motor did
not detect move of motor when energized
(3 times per minute).
Possible cause
HRV unit - Electrical components
Faulty limit switch.
Faulty damper motor.
Faulty main PCB.
External factor (e.g. electrical noise) (error
disappears after power reset, but returns
after a while).
2.2.1.2. "60" – External protection device activated
Trigger
The input signal JC-C1 is closed + set
28-8-02 or -03.
Possible cause
HRV unit - Electrical components
Local contact is closed.
Wrong field setting.
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 not stop operating.
Control will disable output to damper
motor.
Check
Check limit switch changes between open
and closed contact when power on HRV
unit.
Check damper motor rotates when power
on HRV unit.
Check HAP on main PCB is blinking.
Check connectors power and limit switch
damper motor.
Check for source which could cause elec-
trical interference.
Effect
Unit will not stop operating.
Operation resume with (local) contact
opens again.
Check
Check state and wiring to local switch.
Check field setting by user interface.
Check HAP on main PCB is blinking.
Check for source which could cause elec-
trical interference.
2.2. Error based troubleshooting
Reset
Power reset.
To remove warning from main history,
push the ON/OFF button on the remote
controller for 5 seconds in the check
mode.
Corrective action
Replace the damper motor assembly.
Replace the damper motor assembly.
Replace main PCB.
Reconnect plug(s) of power and limit
switch damper motor.
Avoid electrical interference.
Reset
Automatic reset.
To remove warning from main history,
push the ON/OFF button on the remote
controller for 5 seconds in the check
mode.
Corrective action
Change wiring.
Change local switch if contact permanent
closed.
Adjust field settings by user interface
according to installation lay out.
Replace main PCB.
Avoid electrical interference.
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