View Full Version : HELP Daikin twin split r410. L5 fault

22-02-2014, 09:16 PM
Hi there I have been installing For many years but have moved over to Maintance , repair so picking up as I go along .
There is L5 fault which suggest , inverter or compressor. , unit was running after resetting , inverter seamed to be working fine as did compressor , it ramped up steadily in heating to around 10 amps and was working for round hour with no issues but whilst had gauges on it was running over 40 bar , talking to technical the suggested the pressure sensor Was faulty , replaced and run again and was still running over 40 bar .
Unable to observe for any length of time due to branch shutting and had to leave , can any one help ,, cheers

install monkey
22-02-2014, 09:21 PM
have u meggered the pot, usually pot failure- siezing or grounding

23-02-2014, 08:42 PM
Grubby filters?