PACD011001C2 Function
Function Urban Multi “MX1, ME1 Series” Using R-22 51
1.19 Gas Depletion Alarm
An alarm (U0) is given for severe gas depletion. Alarm is indicated but operation continues.
When cooling
When heating
While compressor is running
and
Low pressure < 1.0 kg/cm
²
Gas depletion alarm cancellation
Gas depletion alarm (U0) is displayed.
Compressor off
or
Low pressure Lp ≥ 1.0 kg/cm
²
Conditions given on the
left continue for 30 min.
(VF008)
While compressor is running
and
4-way valve ON (heating cycle)
and
Evaporator outlet superheat
temperature > 20˚C difference
and
Outdoor unit electronic expansion
valve = 2000 pulses (completely open)
Gas depletion alarm cancellation
Gas depletion alarm (U0) is displayed.
Conditions given on the
left continue for 60 min.
Compressor off
or
4-way valve OFF (cooling cycle / defrost)
or
Evaporator outlet superheat
temperature ≤ 20˚C difference
or
Outdoor unit electronic expansion
valve < 2000 pulses (Fully open)
(VF009)
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