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Troubleshooting by Remote Controller Display / LED Display
SiBE28-804
188
Troubleshooting
5.23 “
E9
” Malfunction of Electronic Expansion Valve
Remote
Controller
Display
E9
Applicable
Models
RZQ(S)71~140
Method of
Malfunction
Detection
Method is determined according to the suction pipe superheat degree and electronic expansion
valve opening degree calculated by values of low pressure sensor and suction pipe temperature
thermistor.
Malfunction
Decision
Conditions
When the following conditions are met for 10 minutes
Suction pipe superheat degree < 4°C
Minimum electronic expansion valve opening degree
Connector of electronic expansion valve is missing when the power is on.
Supposed
Causes
Faulty electronic expansion valve
Faulty solenoid valve
Faulty check valve
Disconnection of electronic expansion valve harness
Faulty connection of electronic expansion valve connector
Faulty each thermistor
Faulty mounting
Faulty pressure sensor
Faulty Outdoor control PC board
Summary of Contents for FHQ100BUV1B x 2
Page 13: ...SiBE28 804 2 ...
Page 19: ...Model Name and Power Supply SiBE28 804 8 General Information ...
Page 29: ...Specifications SiBE28 804 18 Specifications ...
Page 33: ...Wired Remote Controller SiBE28 804 22 Remote Controller 1 2 Installation ...
Page 34: ...SiBE28 804 Wired Remote Controller Remote Controller 23 ...
Page 93: ...Outdoor Unit Fan Speed Control SiBE28 804 82 Functional Description ...
Page 131: ...Test Run and Operation Data SiBE28 804 120 Test Operation ...
Page 251: ...Troubleshooting by Remote Controller Display LED Display SiBE28 804 240 Troubleshooting ...
Page 277: ...PCB Layout SiBE28 804 266 Appendix ...
Page 297: ...RZQ100 140C7 RZQS125 140C7V1B SiBE28 804 286 Removal Procedure ...
Page 311: ...SiBE28 804 iv Index ...