ewgeny
05-03-2010, 09:27 PM
Hi folks. There is a very strange problem with one Set-Free VRF RAS-20FSG system installed. There are no history documents and I'dont know what kind of problems were in the past and what repairments were done. The problem is that the system works for day or two, and stops with "no error code" (the client says that). They shut it of, wait for about an 1/2 hour and shut it on, evrything is back to normal for day or two. So, I opened it when it was stoped, and really there was no alarm code. I checked for last stop reason it was "32" - Abnormal transmissoin IU-OU.
Quickly I found a blown fuse EF2 on outdoor unit, changed and, restart but the system show alarm code 05 and won't work. Take off the fuse, and it's back - the systems work :rolleyes: - it works WITHOUT fuse, but with the fuse WON'T work.
On the next day, I tried to "give it" the new fuse again, and than nothing work, even the 7-segment display. Turn off power, take off the fuse, turn back power - OMG - it works. :confused:
I read in SM about DSW10, but I don't understand about which fuse is about.
The power supply is OK and L1 L2 L3 are in right order (it won't work at all if they are changed)
Does anyone see such a case??
PS: Sorry for my poor English.
Quickly I found a blown fuse EF2 on outdoor unit, changed and, restart but the system show alarm code 05 and won't work. Take off the fuse, and it's back - the systems work :rolleyes: - it works WITHOUT fuse, but with the fuse WON'T work.
On the next day, I tried to "give it" the new fuse again, and than nothing work, even the 7-segment display. Turn off power, take off the fuse, turn back power - OMG - it works. :confused:
I read in SM about DSW10, but I don't understand about which fuse is about.
The power supply is OK and L1 L2 L3 are in right order (it won't work at all if they are changed)
Does anyone see such a case??
PS: Sorry for my poor English.