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28-09-2010, 11:26 PM #6
Re: LG Multisplit ongoing issue... slowly getting there I think!
It's difficult without knowing the system equipment layout but we'll have a go...
Cooling Mode -
Outdoor unit - Solenoid valve - pipework - indoor unit EEV - indoor coil - pipework - outdoor unit.
Indoor EEV has liquid feed from outdoor unit and expands liquid into the indoor coil.
Heating Mode -
Outdoor unit - pipework - indoor unit coil - indoor unit EEV - pipework - outdoor unit solenoid valve.
Hot gas runs through the indoor coil before being arrested by the EEV. EEV may not have a liquid seal on it so will bleed vapour.
Short pipes have not provided sufficient resistance to the hot gas so coil operates at higher pressure/temperature.
I could be wrong though.Brian - Newton Abbot, Devon, UK
Retired March 2015
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