Results 1 to 2 of 2

Thread: Indoor icing up

  1. #1
    Join Date
    Jan 2005
    Location
    Ireland
    Age
    37
    Posts
    85
    Rep Power
    15

    Indoor icing up



    Hi Guys

    This is annoying me

    Hitachi wall mounted 7 Kw unit

    Called out unit cycling on and off with no faults ,
    Turns out unit is cycling off on the indoor coil thermistor, when I take the thermistor out the unit runs but started to iced up badly,

    Long story short , leaking flare nut , repaired and recharged system .
    HOWEVER
    Unit is behaving the same way only running for longer . Iím getting frost on the suction line and if I remove the indoor coil thermistor the unit will run but will eventually ice up.
    Coils are clean , charge is ok, however it seems that the LEV is wide open, couldnít get through to tech to check coil voltages . Would this account for the suction frosting up after a couple of minutes ? What controls the LEV?
    One possibility is the heat load , the outdoor is exposed to sunlight all day and with the extreme weather we are having I wonder is the system struggling . ?



  2. #2
    Join Date
    Mar 2001
    Location
    ireland
    Age
    48
    Posts
    1,308
    Rep Power
    34

    Re: Indoor icing up

    LEV could be stuck open, i've had it on their outdoors. Even in this heat valve should control super heat so long as gas charge is correct, sounds like unit is going off on coil freeze protection, might be worth ordering a head and thermistor?
    Mostly found in the southern part of this green and pleasant land.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •