Daikin

[marc5180]

Hi,
I'm working on a daikin VRV2 heat recovery tomorrow (not sure of the model number) which is faulting on an "E4"
fault but as i hardly ever work on these units i can't remember how to be sure all the solonoids and expansion valves are open when pressure testing and vaccing out.

Can anyone point me in the right direction on this one please?

[james10]

E4 can also be faulty sensor or pcb im trying to email you manual for this unit to your e mail in your v card it is quite alrge file so not sure if it will work if you dont get the file call daikin on 01932879200 and they will talk you thriugh the open all valves procedure the down side is you have to leave the power on to the unit whilst testing which isn't ideal

[Gingerair]

Hi Marc
It's Manual No SiE39-306 you want off the Extranet.

Someone correct this if it's wrong..

Recovery Mode-
Press & Hold MODE till H1P is Lit Solid
Press SET 21 times until LED's are-
ON OFF ON OFF ON OFF ON
Press RETURN Once- H7P flashing
Press SET once- H6P flashing
Press RETURN Twice

Hope this helps

Ginge

[install monkey]

then return to exit after u have finished driving the valves open.

[james10]

Hi Marc
It's Manual No SiE39-306 you want off the Extranet.

Someone correct this if it's wrong..

Recovery Mode-
Press & Hold MODE till H1P is Lit Solid
Press SET 21 times until LED's are-
ON OFF ON OFF ON OFF ON
Press RETURN Once- H7P flashing
Press SET once- H6P flashing
Press RETURN Twice

Hope this helps

Ginge

Spot on

[marc5180]

That's great guys, thanks.

Why don't Daikin make it simple like Mitsi?

Also thanks for the email james10, that will come in handy tomorrow for sure.

[VRVIII]

then return to exit after u have finished driving the valves open.

then press MODE to exit after u have finished driving the valves open (to close valves again when finished)
Or switching mains on/off will also have same result

[andyc425]

hey guys do any of you posses the manual for the pcb modes etc, i phoned daikin but they failed to send me one would much appreciate if some one could send one via e-mail. You can download my Vcard

[marc5180]

The units in question is a reyq10m8w1b x2

Got to site this morning, unit running with no fault codes yet air off on heating 28C.

Checked fault history and found unit 0 "JC" fault but no "e4" fault which had been reported.

Does anyone have the manual for this one that shows error codes? I'm unable to log onto extranet whilst at work using my PDA.

[james10]

Jc=Malfunction suction pipe sensor/defect low pressure sensorsystem/connection high pressure with wrong connection/defect outdoor pcb board
Daikin text service 07797801908 just text the fault code to that number and they text you straight back with error description i'll email you error code list all daikin codes are the same regardless of system type

[marc5180]

Thanks, traced the problem to a low pressure transducer that was faulty.
All sorted now.

[james10]

Thanks, traced the problem to a low pressure transducer that was faulty.
All sorted now.

better than having to find a leak on the buggers

[moondawn]

hi marc if its the low pressure transducer can that be changed without removal of refrigerant?

cheers lee

[Gingerair]

I can't believe a man of you calibre hasn't got a daikin service checker...

[marc5180]

hi marc if its the low pressure transducer can that be changed without removal of refrigerant?

cheers lee

Im not too sure Lee, i've looked in the manual but it doesn't say anything about removal of LP sensor.

I'm hoping i don't have to remove the refrigerant maybe someone on here will know

[marc5180]

I can't believe a man of you calibre hasn't got a daikin service checker...

It's taken me 4 years to get hold of the Mitsubishi monitoring tool and i work on that kit all the time.

We don't do much work on Daikin VRV's which is why i haven't really pushed to get one but it could all change so it may be worth investing in one.

How easy is it to get the service checker and is there a course to go on to show you how to use it?

[james10]

Im not too sure Lee, i've looked in the manual but it doesn't say anything about removal of LP sensor.

I'm hoping i don't have to remove the refrigerant maybe someone on here will know

You can pump the system down Daikin calls this the adding refrigerant function or if you have more than one condenser shut the faulty units valves and recover the refrigerant into the other condensers easier and quicker than reclaiming the full charge

[Reffnut]

The tranducers are on shrader valves anyway I had to change the discharge one on one of these units last month!

[Gingerair]

The service checker isn't as hard to get hold of as the mitsi monitor tool, think as long as you're willing to cough up the cash they're happy to supply. Have been told recently that they do provide a course but not checked for sure. Think they may have recently published some more training course dates..

I thought it was the older 407c type units that were the last to have schrader connections..

If you've not got another condenser on the system you made need to recover the full charge, the only access valves for recovery, pressure testing/vaccing are on the main condensing unit isolation valves. You couldn't even close these & recover into the pipework cause there's no other access fittings on the condenser..

I prefer Mitsi..

Ginge

[Reffnut]

Ohh could be actually it was an Rseyp I was working on 407c

[Gingerair]

Daikin told me it's something to do with F-Gas why they changed, pain in the @ss if you ask me...

P.S. Marc the manual No. for the Heat Pump model is SiE39-302

[VRVIII]

hi marc if its the low pressure transducer can that be changed without removal of refrigerant?

cheers lee

The pressure transducers on VRVII (M series) are connected using mushroom type schrader valves and can be replaced without removing gas charge.
The transducers on VRVIII (P series) are weld in.

Daikin told me it's something to do with F-Gas why they changed, pain in the @ss if you ask me...

P.S. Marc the manual No. for the Heat Pump model is SiE39-302

RXYQ- -M7&M8 VRVII heat pump manual - SiE39-302
RXYQ- -M9 VRVII heat pump manual - Si39-407A

RXYQ- -P7 VRVIII heat pump manual - Si34-601A
RXYQ- -P8&P9 VRVIII heat pump manual - Si34-803A

[Gingerair]

Handy info, thanks VRVIII

[moondawn]

hi there going to fit this pressure transducer tomorrow, the system has 2 condensors both the same model number :reyq10m8w1b
To stop the unit from going in to fault marc has used the mode buttons on the outdoor main board to disable the faulty condensor from the system therfore allowing it to run whitout faulting on the indoor remote controllers.

Could someone please post how we are able to put the system back to how it was originally please.

cheers lee

[marc5180]

Ring Daikin, they don't bite

[marc5180]

OR..........
Reset the power supply during the outdoor unit is stopping to cancel the
automatic backup operation forcibly.

[moondawn]

nothing wrong with being prepared marc, daikin are very busy people.

[moondawn]

hi all fitted lp transducer system back up and running now. the transducer was a mushroom type shreader connection and simply unscrew it and replace with lp transducer.

thanks all

cheers lee