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Thread: fujitsu alarm code help?
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04-01-2011, 10:11 AM #1
fujitsu alarm code help?
hi guys iam a commercial refrigeration mechanic. i will be honest i have never worked on these inverter system. i have a good customer who is have trouble with an a/c. Its a AST30pra. Fujitsu have been out 3 times and cant fix it. i can tell you that there is gas in the system and that one light stays on and the timer light flashes 10 times. any help would be useful.
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04-01-2011, 07:40 PM #2
Re: fujitsu alarm code help?
Hi, try contacting Fujitsu in UK. They may have a diagnostic tell tale on what those lights sequence are.
Inverters are sensitive to power failures, have you had power cut outs? try a power down/power up reset. You could have a dodgy inverter power board or There may be an overcurrent sensing on compresser start up or maybe the fan if that is also an inverter driven fan. These type of faults tend to lock out the system but reset on power down/up & untill it re senses on start up.
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04-01-2011, 08:17 PM #3
Re: fujitsu alarm code help?
Try reading the attached.
It may help you resolve your issue, although they don't list 10 flashes?
Good Luck
Grizzly
http://www.refrigeration-engineer.co...ad.php?t=21050
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04-01-2011, 08:50 PM #4
Re: fujitsu alarm code help?
10 flashes ipm error
Abnormal current value of IPM is detected > Permanent stop. Heat radiation is blocked (inlet/outlet).-Check if outdoor fan is defective (does not rotate).-Refrigeration cycle defective (refer to refrigeration troubleshooting
-Controller PCB defective (refer to IPM diagnosis).
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04-01-2011, 08:58 PM #5
Re: fujitsu alarm code help?
this link may also help http://www.fgeurofred.co.uk/default.asp?docId=12663
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04-01-2011, 08:58 PM #6
Re: fujitsu alarm code help?
Thanks for your help guys. I will try the condenser fan. If fujitsu cant fix it with all their service manuals i surely have no chance.
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04-01-2011, 10:54 PM #7
Re: fujitsu alarm code help?
check the thermistors on outdoor they control the fan and control circuit they are extremley prone to failure however they usually bring a code on indoor when the two buttons are pressed be lucky charlie
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