hittachi air conditionig

[bernard]

can anyone tell me why on hittachi air conditioning units onlt two of the phases are fused down at the unit

[chemi-cool]

hi bernard,

it very simple, if the two phases trip from any reason, there is no curant on the third one so they save money on a single clickson.

but there is still 240V on that phase!

chemi

[bernard]

Thankyou for your prompt reply. but why bother having any fuses on the actual unit, why not just rely on the 40 amp c/breaker on the consumer unit.

[chemi-cool]

its all come down to money.

if they can save a littla screw, they will. the same with electrical components.

by the way, this method is used by compressor manufacturers for many years.

chemi

[Bones]

why dont my R410a tourque spanners fit the flare nuts on the hitachi condensing units? they fit every other brand i have installed thus far...

sort of spun me out... just had to use the shifters instead, maybe i got a freaky unit or something... lol.