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Thread: Daikin DX unit
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23-01-2017, 07:34 PM #1
Daikin DX unit
Hey guys, would you have a wiring diagram for two boards *I'm at a unit, a Hi-Velocity HV-100BU AHU indoor with a RZQ140B8W1B outdoor. Complaint it won't heat but I can't get the condenser to run. Only details I see are FBQ35-60B7V1 and an EC9509D. Any ideas? Calling for full heat but the condenser just sits there.
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23-01-2017, 08:02 PM #2
Re: Daikin DX unit
Has the RZQ unit had the software updated? B series had poor inverter/fan control.
Brian - Newton Abbot, Devon, UK
Retired March 2015
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23-01-2017, 08:09 PM #3
Re: Daikin DX unit
I've installed and serviced/repaired lots of Daikin but can't understand your setup?
Hi-Velocity HV-100BU AHU...not familiar with this
with a RZQ140B8W1B outdoor...not sure how you can pair this with the AHU?
FBQ35-60B7V1 and an EC9509D...this doesn't make any sense?
Do you have different model numbers so far away from those in England?
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23-01-2017, 09:49 PM #4
Re: Daikin DX unit
Doubt it, it was our 1st time on site today and the unit looks like it hasn't been serviced in a good good while.
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23-01-2017, 09:53 PM #5
Re: Daikin DX unit
It's a Daikin condenser used as a heat pump to a coil on an AHU. The controllers are April Air, AHU is Hi-Velocity. It's the strangest set up I've ever seen. They're both wired into a panel with 2 Daikin boards. The 2 codes are the only info I can see on the boards.
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23-01-2017, 11:15 PM #6
Re: Daikin DX unit
I've seen these set ups before, condenser feeding the ahu coil using the pcb control board from a daikin unit, sort of worked.
Brian - Newton Abbot, Devon, UK
Retired March 2015
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24-01-2017, 04:24 PM #7
Re: Daikin DX unit
That's the ERQ model condenser and AHU controller
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24-01-2017, 11:30 PM #8
Re: Daikin DX unit
Its a board from a ducted unit i think, hi velocity units, bunch of them installed here, quare ****e. First check you have correct voltage at outdoor, and that neutral is properly connected. Indoor stat feeds to board to call outdoor, can you hook a standard daikin controller to the indoor board and test run unit?
Mostly found in the southern part of this green and pleasant land.
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25-01-2017, 07:37 PM #9
Re: Daikin DX unit
Here's a link to the Daikin info http://www.daikin.co.uk/binaries/DEU...11-367499.docx
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29-01-2017, 03:09 PM #10