Mitsubishi Heavy Industries - Inverter Service Manual.

[bundysnake]

Anyone know where i can find a service manual for Mitsubishi Heavy Industries Inverter split systems?

I have a system that i need to repair but don't know where to start. Indoor fan works and runs but cond fans or compressor don't start.

I opened up the case and can't see anything visually wrong, threw the gauges on and found that the unit contains the correct refrigerant (R410a).

[bundysnake]

The model number of the FCU is SRK712EA-S1.

The outdoor unit has no info on it.

[nike123]

Are you sure in your model#?
How old is that?

[bundysnake]

you must have posted that just as i posted the model number

[nike123]

you must have posted that just as i posted the model number
Jep!
It shuld be SRK 71 ZEA-S1!
Correct?

[nike123]

http://i39.tinypic.com/256qtkj.jpg

[bundysnake]

yea thats the correct model number, is there any other pages? that one doesn't tell me a great deal.

The indoor fan runs perfect, but no outdoor fan or compressor.

[nike123]

yea thats the correct model number, is there any other pages? that one doesn't tell me a great deal.

The indoor fan runs perfect, but no outdoor fan or compressor.

Check error codes as described there!

[bundysnake]

There is no error codes on that image. it says to refer to page 121.

[Toosh]

Anyone know where i can find a service manual for Mitsubishi Heavy Industries Inverter split systems?

I have a system that i need to repair but don't know where to start. Indoor fan works and runs but cond fans or compressor don't start.

I opened up the case and can't see anything visually wrong, threw the gauges on and found that the unit contains the correct refrigerant (R410a).

Will this help you

http://www.abacusairconditioning.co.uk/Mitsubishi%20Fault%20Codes.pdf

[nike123]

There is no error codes on that image. it says to refer to page 121.

You should first enter service mode to show error codes as described at image I posted. Than post your findings here.

[bundysnake]

Thanks nike123 & Toosh, i will post my findings here.

Does anyone have a complete service manual for this unit i can download & print? or know where i can obtain one?

[nike123]

Try here (http://www.aircon.ru/technical/mitsubishi_heavy.php)!
Still, it would be good to post your findings here even if you find manual.

[bundysnake]

thanks for the link nike123 but i can't access them as im not a member and i can't speak that language. If ipm you my email could you send me the manual for the unit please?

[nike123]

thanks for the link nike123 but i can't access them as im not a member and i can't speak that language. If ipm you my email could you send me the manual for the unit please?
Use Google translate and develop some search skills!;)
http://translate.google.com/translate?hl=en&sl=ru&tl=en&u=http://www.aircon.ru/technical/mitsubishi_heavy.php&twu=1

Apply for registration!

You youngsters are always expecting everything on plate.

[lowcool]

why not go back to the mob who you got it from.im assuming actrol its strange that they cant help you out.

on that mandatory fact sheet it should also list have you googled it

[bundysnake]

lowcool i didn't buy the unit, i just got the service call.

What is this mandatory fact sheet you speak of?

[lowcool]

gday bundy
the fact sheet is a topic for suggestions for the forums.im not 100% clued up on back up from actrol but have found a fellow here called tony nighberg at the marleston store to be rather helpful.ive installed a few but as yet have not had go down the road you are now.happy fault finding fella.
cheers

sorry if ive misspelt your surname tony

[Toosh]

Thanks nike123 & Toosh, i will post my findings here.

Does anyone have a complete service manual for this unit i can download & print? or know where i can obtain one?

Hi Bundy this is handy to have Fault Codes

http://www.abacusairconditioning.co.uk/Diagnostic-Fault-Codes.html

Toosh

[bundysnake]

Ok so what i found after attemptimg to get the unit in service mode.

LEDS on FCU flashed
2 x run +timer
2 x timer
1 x run + timer + econ

does anyone know what this means?
I'm starting to think i need to get a mitsubishi service person out there?

There were no codes displayed on the remote control, i attempted the service mode display procedure around 10 times.

Any help would be appreciated.

[bundysnake]

can anyone help?

[exotiic]

how old is the system? as its a 71ZEA i would assume its still under its warranty (5 year residential, 3 year commercial)? If so get their service agent out

[bundysnake]

The customer doesn't have any proof of purchase or anything as he bought his business with the air cons installed.

He might just have to pay for a mitsubishi service agent to go out there.

[exotiic]

Oh thats a pity, I thought it may have been a little lifeline for you. Although it is always beneficial to be able to sort out the problem for our own knowledge!

[goshen]

Hi call the company that sold this unit ,as they have records of who & when bought this unit ,just try and find the serial no'
good luck

[jsimon]

i dont know if this is the same but i think it is
when you open the top is the pcb upside down if yes there is another board under there this is the inverter driver and runs the fan
i have had 3 of these die after a year or so in service

[paddyaircon]

i had two of these pcb that drives fan /inverter fail

[dakesojo]

there is a hidden fuse on the inverter board this board is upside down it will need replacing(the pcb) . i had the same problem on a unit order all the outdoor pcb's to find only inverter pcb needed

[bundysnake]

Thanks for all you help everyone :)

I found a great link to the service handbook. http://www.mhiaa.com.au/docs/MHIAA_Pocket_Code_Book_A5.pdf

The fault im getting is error 22 which is outdoor pcb so im guessing it just the inverter pcb. I will order it and see how i go.

Anyone got any pointers how to replace these things? and do they hold any residual voltage i should be aware of?

[lexmark42]

Hi everybody,

the question of checking error codes reminds me of something I have been wondering about with Mitsubishis small splits (like the SRK25ZJX-S):
Is there a simple way to put the units in forced cooling for pump down?
None of the mitsubishi service manuals mentions this; those of any other manufacturer do.

Cheers,
-Dave

[trandovn]

I come from VN. I readed the comemt of everybody. thanks so much. I just download MHI techniacal manual. I really need.

[gnasch]

Citing from Indoor Unit Installation Manual RKY012A007A:

Forced cooling operation
Turn on a power supply again after a while after turn off a power supply. Then press continually the ON/OFF button 5 seconds or more

hope this helps,
gnasch