Gas Depletion Alarm - Daikin VRV K Manual

SI-95.BOOK Page 33 Friday, March 31, 2000 10:59 AM
Si-95

1.18 Gas Depletion Alarm

An alarm (U0) is given for severe gas depletion. Alarm is indicated but operation continues.
When cooling
When heating
Functions Inverter K Series
While compressor is running
and
Low pressure < 1.0 kg/cm ²
Gas depletion alarm cancellation
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 30 min.
Gas depletion alarm (U0) is displayed.
Conditions given on the
left continue for 60 min.
4-way valve OFF (cooling cycle / defrost)
Functions
Compressor off
or
Low pressure Lp ≥ 1.0 kg/cm ²
(VF008)
Compressor off
or
or
Evaporator outlet superheat
temperature ≤ 20˚C difference
or
Outdoor unit electronic expansion
valve < 2000 pulses (Fully open)
(VF009)
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