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ESIE15-13C
Troubleshooting by Remote Controller
Service Diagnosis
169
4.32 Refrigerant Shortage (Error)
Remote
Controller
Display
U0
Applicable
Models
RZQG
Method of Error
Detection
(In cooling)
Detection based on difference in temperature between temperature set by remote controller and
indoor suction air temperature, electronic expansion valve opening degree, compressor
frequency and low pressure.
(In heating)
Detection based on difference in temperature between temperature set by remote controller and
indoor suction air temperature, electronic expansion valve opening degree during the control of
suction air superheating, high pressure, indoor heat exchanger temperature and indoor suction
air temperature.
Error Decision
Conditions
(In cooling)
When compressor frequency does not increase even though the load is heavy because the
electronic expansion valve is opened to the fullest extent
(In heating)
When suction gas superheat degree is large, compressor frequency is low and the electronic
expansion valve is opened to the fullest extent even though heating load is heavy
[If high pressure is lower than saturated pressure for indoor heat exchanger temperature (or
indoor suction air temperature), error is confirmed.]
Supposed
Causes
Refrigerant shortage
Clogged refrigerant piping system
Mismatching of wiring and piping
Stop valve is not opened
Summary of Contents for FHQ100CAVEB
Page 2: ......
Page 6: ...ESIE15 13C iv Table of Contents...
Page 14: ...Introduction ESIE15 13C xii...
Page 18: ...Outlook Outdoor Units ESIE15 13C 4 General Information 2 Outlook Outdoor Units...
Page 22: ...Operating range ESIE15 13C 8 General Information...
Page 108: ...Emergency Operation ESIE15 13C 94 Field Setting...