Daikin EWAQ480F Chiller

[TrickyRikki]

Can any one help me with this chiller, its the first time ive worked on a daikin chiller.

i had the call for the chiller not working at all, when i arrived the controller had 2 alarms which was +C2 OFFMTRPROTECT and +C1 OFFMTRPROTECT

After further investigation i found that one of the 80amp fuses had blown on circuit 1, i removed the fuse and took the compressor offline so circuit 1 is currently running on 2 compressors.

After about 1/2hour of running i get the +C2 OFFMTRPROTECT alarm again and it shuts circuit 2 down, i have looked online and im not able to find what the fault code is or means.

The controller is also asking for a password which we dont have (just taken site over) without calling daikin applied out to investigate is there anyone on here that has experience or knowledge of these chillers?

[Gibbo]

I would try 1234 for the password
As for the alarm don't know can't see it in the iom possibly compressor or fan trip.
Gibbo

[HVACRsaurus]

Hi,

This document has done the rounds, I’m thinking it was originally compiled by one of the members here

http://www.frigoristes.fr/getfile.php?att_id=1441&apli=forum_npds&att_name=Mots%20de%20passe%20pour%20diverses%20marques%20de%20GEG.pdf

[GHAZ]

Try 5321 if it's microtec 3 Siemens controller, I think the motor protection module has shut it down, the compressor motor might be getting hot or some other safety is linked with the protection module

[tsialkoutis]

6363: Service password

[TrickyRikki]

Thanks for the advice, sadly i didnt get chance to go back to site to try this out but they have got the issue sorted.

It was a faulty thermistor on circuit 2 compressor, thanks again for everyones help and advice.

Rik

[Brian_UK]

Thanks for the update.