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Thread: Full power down comms ?
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11-05-2023, 03:10 PM #1
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Full power down comms ?
Daikin RXS50K2V1B
Hi I'm reading 240v on the comms (3) ???
I just replaced both the outdoor PCB. Was told to do this but didn't originally diagnose the fault. Tried to run, straight away the system has gone back in fault. U4. And took out the PCBs again. Indoor did start for a few seconds but then thats when it faulted. Still waiting for daikin to ring me back, but just wondering if anyone has an idea of what's going on. Thanks
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11-05-2023, 03:32 PM #2
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Re: Full power down comms ?
What are your wiring connections
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11-05-2023, 06:10 PM #3
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Re: Full power down comms ?
Wiring connections?
1 - live, 2 - neutral, 3 - comms, - earth
Is this what you need?
Note - I can take 3 - comms out the condenser and test it. It's
still 240v when should fluctuate to around 40v I think
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11-05-2023, 06:12 PM #4
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Re: Full power down comms ?
Daikin never rang me back, I'll have to try again tomorrow
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11-05-2023, 07:01 PM #5
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Re: Full power down comms ?
Are you measuring terminal 3 to neutral or live ?
Measuring ac or dc
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11-05-2023, 08:14 PM #6
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Re: Full power down comms ?
3 to earth. 247v last I checked
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11-05-2023, 08:42 PM #7
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Re: Full power down comms ?
Comms should be measured between 3 and neutral in dc
Check the fan motor for earth fault
https://www.manualslib.com/manual/96...page=78#manual
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12-05-2023, 09:49 AM #8
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Re: Full power down comms ?
Yeah your right. Outdoor fan motor has gone. And I feel a like fool haha ��
