How to Troubleshoot Daikin VRV Inverter Boards

[@pyroguy3]

I've been using the Daikin inverter board checker tool recently and have had good experiences with it. Sometimes it's across a roof and down a ladder, so it's good to know how to quickly manually check these boards. I would love to see a video on your procedures when you change a compressor. So much of the way I work on these machines has been through self-taught pain and suffering; I appreciate you all taking the time to create this content.

[@stephenandrade7993]

Got a part number for that tool?

[@hvacman954]

Great video. Thanks mechanical pros

[@tom24057]

Great video. Really like your VRV content 🇬🇧

[@mohdahmed8400]

Thank you for sharing this instructive video

[@MechanicalPros]

Glad it was helpful!

[@andyreyes6464]

good video, thanks for the knowledge

[@MechanicalPros]

Any time!

[@marcelosmerkin5973]

Great information and thanks for sharing.

[@rickross7796]

I service mitsubishi and have changed inverter boards it seems there are some small differences between diakin and mitsubishi but I found this video very helpful thanks

[@LC-qi5ff]

What sort of differences?

[@jasonhayes8285]

Great content!! Please keep the videos coming!

[@HungPham-ff2wj]

Very good

[@adriangonzalez-bz6jv]

Thank you so much

[@l.crossjr]

Very informative! Anything on LG?

[@jrbfyp7065]

Nice video but next time please focus the camera to where you guys put the prods of tester . Very informative

[@MechanicalPros]

Thanks for the heads up! We'll definitely keep an eye on the camera focus next time so you can see exactly where we put those prods.

[@Username-ng8jy]

If you’re looking at the board it will make sense

[@PT-hh2lb]

@13:42. With all the wires disconnected from the compressor, not touching anything and then run the Power Transistor Check mode 28, one lead to the disconnected wires either U, V or W and the other lead to the Ground check? Multimeter in DC voltage check mode? Thank you

[@prowesstv]

Ok my question on this topic, i know you can turn off and inverter board via the mode settings ; and i did that and the unit ran without problem however after i took the bad board out to to take to the supply house the unit has an error as it says it cannot communicate with the said board. So i guess the setting isnt a full deactivation and is more a prevent it from running?

[@qomco]

Did the unit run or shut down due to the error code?

[@prowesstv]

@@qomco it shutdown

[@JerryDesemela]

🎉

[@JerryDesemela]

😊

[@mtz5582]

I do not understand here...isn't an inverter circuit ment to convert DC to AC...!!!! The scroll compressors I've seen on Heat pumps eg..Toshiba SMMS-i versions are rated with DC Voltage ...Please if coild clarify for me as I am still a rookie ..Thank you

[@Username-ng8jy]

The board converts ac to dc then dc to ac it’s to filter the electricity. Much how speed drives work.

[@anthonystewart4369]

That inverter board looks the same as the LG multi v board

[@samcanada2346]

hi

[@briancarlisi2224]

Excellent explanations. Thanks!